DranTech PMIT User Guide

User’s Guide DranTech PMIT Precision Milliohm Insulation Resistance Tester M227I Digital Multimeter and Data Logger ©2007 Rev. A 3 4 5 6 10 1 9 7 8 1 2 3 2 4 5 Symbols used in the Digital Display 1 Main display with decimal point and polarity display 6 2 Auxiliary display with decimal point and polarity display 3 : Multimeter in continuous operation, ON blinks at transmission frequency in transmission mode 4 REM: Memory mode operation, disappears after communication 7 7 via the interface is ended by means of key or switch operation 5 ZERO: Zero balancing 6 MAN: Manual measuring range selection 8 7 Unit of measure (if blinking, refer to chapter 11.2 on page 16 and chapter 15 on page 26) 8 MIN/MAX: Display of smallest/largest recorded values max. 600 V ! with time specification 9 : Acoustic signal enabled, beeper is activated for corresponding function 1 Display (LCD) 10 : Low rechargeable battery voltage (< 3.3 V), recharge 2 ON|OFF key rechargeable batteries Operating mode menu: open submenus / acknowledge entries; background illumination ON / OFF Standard Equipment 3 DATA|CLEAR key for following functions: save measured value, delete and MIN/MAX Type 27I Operating mode menu: Selection of individual menu items Article Number M227B against direction of flow, increase values Instrument: DranTech PMIT 27I 4 MAN|AUTO key for manual measuring range selection 3 size AA NiMH Rechargeable Batteries • Operating mode menu: Selection of individual menu items KS17S measurement cable set • in direction of flow, decrease values operating instructions • 5 FUNC key for selecting functions, start key INS measurement Operating mode menu: Exit menu level and return to a higher level, abbreviated operating instructions • exit parameters configuration without saving data GH18 protective rubber cover with • carrying strap 6 Rotary selector switch for measuring function DKD calibration certificate • 7 Connector jacks * Charging unit NA HIT2x • 8 Connector jacks for mains power battery charger NA HIT2x Kelvin probes KC27 (1 set = 2 each) — (only with rechargeable batteries inserted) Hard case HC30 — * ⊥ Earthing input BD pack (including adapter, cable and S- Sense –, for 4-wire connection only with Ω/mΩ/mΩ@1A — DranWin®10‚ software) S+ Sense +, for 4-wire connection only with Ω/mΩ/mΩ@1A V; Ω; °C, MΩ measurement input 2 DranTech PMIT User’s Guide Table of Contents Page Page 1 Safety Features and Precautions ........................ 4 11 Insulation Resistance Measurement [MΩ@...V] ....15 11.1 Preparing for Measurement ............................................15 2 Initial Start-Up .................................................... 5 11.2 Insulation Resistance Measurement ...............................16 11.3 Ending the Measurement and Discharging ....................16 3 Selecting Measuring Functions and Measuring Ranges ................................................................... 6 12 Using the Menus – from the Initial InFO Menu to 3.1 Automatic Measuring Range Selection ........................... 6 Operating and Measuring Parameters ............17 3.2 Manual Measuring Range Selection ................................ 6 12.1 Sampling rAtE ................................................................17 3.3 Quick Measurements ....................................................... 7 12.2 Saving Measured Values ................................................17 12.2.1Memory Mode – DATA Key Function (see also chapter 5.1) 4 Triple Digital Display .......................................... 7 17 12.2.2Memory Mode Operation – STORE Menu Function ....18 5 Measured Value Storage ..................................... 8 12.3 Querying Memory Occupancy – INFO MEMO/OCCUP 18 5.1 Measured Value Storage – Key Function “DATA” 12.4 Clearing the Memory – MEMO CLEAr ....................18 (Hold/Compare) ............................................................... 8 12.5 Activating the Default Values ........................................18 6 Saving Minimum and Maximum Values 12.6 Transmission Mode Operation with RS 232 Interface ...19 “MIN/MAX” with Time Stamp .......................... 9 13 Characteristic Values .........................................22 7 Voltage and Frequency Measurement ............. 10 14 Maintenance .......................................................25 7.1 Voltage Measurement [V] ............................................. 10 14.1 Rechargeable Batteries and Batteries .............................25 7.1.1 Zero Balancing in the 3 V DC Measuring Range .......... 10 14.2 Fuses ...............................................................................26 7.1.2 Transient Overvoltages .................................................. 10 14.3 Housing ..........................................................................26 7.2 Frequency Measurement [Hz] ....................................... 11 14.4 Device Return and Environmentally Compatible Disposal 26 8 Resistance and Diode Measurements ............... 11 15 Multimeter Messages .........................................26 8.1 Resistance Measurement (2-wire connection) [Ω] ........ 11 8.1.1 Zero Balancing in the 300 Ω and 3 kΩ Measuring Ranges 11 16 Accessories ..........................................................27 8.2 Continuity Test during Resistance Measurement ......... 12 8.3 Diode Measurements .................................................... 12 17 Repair and Replacement Parts Service, DKD Calibration Lab and Rental Instrument 9 Milliohm Measurement (4-Pole-Measurement) 13 Service .................................................................27 9.1 Compensation of Cable Resistance ................................ 13 9.1.1 Measurement with Kelvin Probe KC27 ........................ 13 18 Warranty .............................................................28 9.2 Thermovoltage Compensation ....................................... 13 9.3 Milliohm Measurement with 200 mA or 20 mA DC [mΩ] 14 19 Product Support .................................................28 9.4 Milliohm Measurement with 1 A Pulsating Measuring Current [mΩ@1 A] (automatic thermovoltage correction in 3 … 300 mΩ range) 14 10 Temperature Measurement [°C] ...................... 14 DranTech PMIT User’s Guide 3 • No measurements may be made with this instrument in 1 Safety Features and Precautions electrical circuits with corona discharge (high-voltage). You have selected an instrument which provides you with high levels of safety. • Special care is required when measurements are made in HF electrical circuits. Dangerous pulsating voltages may be This instrument fulfills the requirements of the applicable present. European and national EC guidelines. We confirm this with the CE marking. The relevant declaration of conformity can be • Measurements under moist ambient conditions, or with an obtained from Dranetz-BMI. instrument with condensation moisture are not permitted. DranTech PMIT is manufactured and tested in accordance with • Be absolutely certain that the measuring ranges are not safety regulations IEC 61010–1:2001 / DIN EN 61010–1:2001 / overloaded beyond their allowable capacities. Limit values VDE 0411–1:2002. When used for its intended purpose, safety of are listed in chapter 13 on page 22. the operator, as well as that of the instrument, is assured. Their • The instrument may only be used in power installations if the safety is however not guaranteed, if the instrument is used electrical circuit is protected with a fuse or circuit breaker improperly or handled carelessly. with a maximum rating of 20 A, and the nominal voltage of the installation does not exceed 600 V. In order to maintain flawless technical safety conditions, and to • Maximum allowable interference voltage between the jacks assure safe use, it is imperative that you read the operating (7) and earth briefly amounts to 600 VRMS in all selector instructions thoroughly and carefully before placing your switch positions in the event of an error. The fuse blows at an instrument into service, and that you follow all instructions interference voltage value of > 3 V in the mΩ range. contained therein. • Be prepared for the occurrence of unexpected voltages at Observe the following safety precautions: devices under test (e.g. defective devices, after testing coil resistance at contactors etc.), for example, capacitors may be • The instrument may only be operated by persons who are dangerously charged. In the interest of safety, always test for capable of recognizing contact hazards and taking the the absence of voltage first with the selector switch in the appropriate safety precautions. Contact hazards exist V and V~ positions. anywhere, where voltages of greater than 33 V (RMS) may occur. • In order to avoid damage to the instrument when interference voltages are applied (within allowable limit values), the mΩ • Avoid working alone when taking measurements which measuring circuit is equipped with an F1.6A/1000 V fuse, involve contact hazards. Be certain that a second person is which makes this measuring circuit highly resistive if present. excessive current should occur in the event of a fault for the duration of overloading. Attention! ! • Do not plug the mains power battery charger into the Maximum allowable voltage between any given instrument if normal batteries have been installed instead of connector jack and earth is 600 V, category II. rechargeable batteries. Attention! ! Warning! Nominal system voltage may not exceed 600 V. Voltage measurements may only be performed with the selector The instrument may not be operated in explosive switch set to the V or the V~ position. atmospheres, or connected to intrinsically safe electrical If the multimeter sockets are confused with the sense circuits. sockets, the instrument may be damaged and the operator may be subjected to danger! Attention! ! Contact hazard! Dangerous voltages at the external jacks may be looped through to the sense sockets during voltage measurement. Therefore do not touch the sense sockets. • Be prepared for the occurrence of unexpected voltages at devices under test (e.g. defective devices). For example, capacitors may be dangerously charged. • Make certain that the measurement cables are in flawless condition, e.g. no damage to insulation, no interruptions in cables or plugs, etc. 4 DranTech PMIT User’s Guide Meanings of symbols on the instrument: 2 Initial Start-Up Rechargeable Batteries or Batteries Warning concerning a source of danger ! Refer to chapter 14.1 regarding correct rechargeable battery or (attention: observe documentation!) battery installation. Ground Warning! Mains power battery charger connection for The mains power battery charger may not be connected if + recharging Rechargeable Batteries normal batteries (which are not suited for recharging) have been inserted: Danger of explosion! Continuous, doubled or reinforced Attention! ! insulation As a result of internal voltage monitoring, the instrument may respond as follows if the battery charge level is low: CAT II Measurement category II device – Cannot be switched on – Shuts back down immediately – Shuts back down immediately when a load is applied Indicates EC conformity in the mΩ range If this is the case, replace or recharge the rechargeable batteries. This device may not be disposed with the trash. For further details on the WEEE marking, please refer to our website www.dranetz-bmi.com and enter search Attention! ! term “WEEE”. The mains power battery charger may only be used to recharge the rechargeable batteries! DKD calibration certificate (red label): Mains power battery chargers with an output voltage of greater than 5 V may not be used. The milliohmmeter’s Consecutive number B0730 internal voltage regulator might otherwise be destroyed. No DKD-K- German calibration service calibration laboratory 19701 guarantee claims can be accepted if any mains power Registration number 01-08 Date of calibration (year - month) battery charger other than the NA HIT2x is used (available as an accessory). Repair, Parts Replacement and Balancing Switching the Instrument On Manually When the instrument is opened, voltage conducting parts may be ➭ Press the ON|OFF key. exposed. The instrument must be disconnected from the As long as the key is held depressed, all of the segments at measuring circuit before the performance of repairs, the the LCD are illuminated. The LCD is shown on page 2. replacement of parts, or balancing. If balancing, maintenance or Power-up is acknowledged with a brief acoustic signal. The repair of a live open instrument is required, this may only be instrument is ready for use as soon as the key is released. carried out by trained personnel who are familiar with the dangers involved. Switching the Instrument On with a PC After transmission of a data frame from the PC, the multimeter is Defects and Extraordinary Strains switched on. See also chapter 12.6. If it may be assumed that the instrument can no longer be operated safely, it must be removed from service and secured Switching the Instrument On Automatically against unintentional use. The multimeter is switched on automatically in the transmission Safe operation can no longer be relied upon, and memory modes. • If the instrument or the test probes are damaged Note! • If the instrument no longer functions Electrical discharge and high frequency interference may • After long periods of storage under unfavorable conditions cause incorrect displays to appear, and may disable the (e.g. humidity, dust, or excessive temperature), see “Ambient measuring sequence. In such cases, switch the instrument Conditions,” page 24. off and back on again in order to reset. If the problem persists, briefly dislodge the rechargeable batteries from the connector contacts. DranTech PMIT User’s Guide 5 Setting Time and Date 3 Selecting Measuring Functions and Measuring See chapter 12 on page 17. Ranges Switching the Instrument Off Manually 3.1 Automatic Measuring Range Selection ➭ Press and hold the ON|OFF key until OFF appears at the The multimeter is equipped with auto-ranging for all measuring display. ranges, except for temperature measurement, and diode and Shutdown is acknowledged with two, brief acoustic signals. continuity testing. Auto-ranging is active as soon as the multimeter is switched on. The instrument automatically selects Switching the Instrument Off Automatically – SLEEP MODE the measuring range which allows for highest possible resolution The instrument is switched off automatically if none of the keys for the applied quantity. When the instrument is switched to or the rotary switch are activated for approximately 10 minutes. frequency measurement, the previously selected voltage Shutdown is acknowledged with a brief acoustic signal. measuring range remains active. Transmission mode: In this case, checking is first performed to The instrument automatically switches to the next highest or next determine whether or not the sampling rate has been set to a value lowest measuring range for the following measured quantities: of greater than 10 s. The instrument is switched off after 10 minutes, but the instrument is reactivated 10 s before data is to be Switching to next Switching to next Resolu- saved to memory. The instrument is then switched back off again. Measuring Ranges highest range lowest range tion at ±(... d +1 d) at ±(... d -1 d) In the transmission mode, the instrument can be manually V~, V , Hz, Ω, mΩ, activated with the ON|OFF key. After activation of this type, the 4¾ 31,000 2800 30 / 300 mΩ at 1 A instrument returns to the “SLEEP MODE”. 3 mΩ@1A, MΩ@...V 3¾ 3100 280 If the instrument is to be fully shut down, it must first be activated and then switched off with the ON|OFF key. This ends both 3.2 Manual Measuring Range Selection memory mode and transmission mode operation. Auto-ranging can be deactivated and measuring ranges can be We recommend setting the instrument to continuous operation for selected manually in accordance with the following table. transmission mode operation. The manual mode is deactivated by pressing and holding the The continuous operation mode is not effected by automatic MAN|AUTO key (approx. 1 s), by activating the rotary switch, shutdown. or by switching the instrument off and then back on again. Disabling Automatic Shutdown The instrument can be set to continuous operation. Acknow- ⇓ ledgement ➭ Press and hold the FUNC key and then switch the instrument MAN| Function Dis- Acoust. on by pressing the ON|OFF key. Continuous operation is AUTO play Signal indicated at the display with the symbol. Manual mode active: short MAN 1 x utilized measuring range is fixed Switching LCD Illumination On and Off Range switching sequence for: ➭ Briefly press the ON|OFF key after the instrument has V: 3 V → 30 V → 300 V → 600 V → 3V →… already been switched on. Hz: 300 Hz → 3 kHz → 300 Hz → … short MAN 1 x Illumination is switched off automatically after approximately 2 Ω: 30 MΩ→ 300 Ω→ 3kΩ→ 30 kΩ→ 300kΩ→ 3MΩ→ … minutes. mΩ: 30 mΩ→ 300 mΩ→ 3 Ω→ 30 Ω→ 30 mΩ→ … mΩ@1A: 3 mΩ→30 mΩ→300 mΩ→3mΩ→ … Note: Electrical discharge and high frequency interference may long Return to automatic range selection — 2 x cause incorrect displays to appear, and may disable the measuring sequence. In such cases, switch the instrument off and back on Automatic range selection is disabled as long as the again in order to reset. If the problem persists, briefly dislodge the MIN/MAX function is active. rechargeable batteries or batteries from the connector contacts. Disconnect the instrument from the measuring circuit before opening and refer to chapter 14.1, “Rechargeable Batteries and Batteries”! 6 DranTech PMIT User’s Guide 3.3 Quick Measurements 4 Triple Digital Display If you wish to perform quicker measurements than those possible The three digital displays (1 main display and 2 auxiliary with the automatic measuring range selection function, make sure displays) show the measured value with decimal and plus or to establish the appropriate measuring range: minus sign. The selected unit of measure is displayed as well. A minus sign appears to the left of the value during the • by manual measuring range selection, i. e. by selecting the measurement of zero-frequency quantities, if the plus pole of the measuring range with the best resolution, see chapter 3.2. measured quantity is applied to the “⊥” input. or “OL” (overload) appears if the measuring range upper limit is • via DATA function, see chapter 5. After the first measure- exceeded for the following measured quantities: ment, the proper measuring range will be automatically V AC, V DC, Hz, Ω, , mΩ, 30 / 300 mΩ at 1 A: 30999 determined so that measurements are performed more rapidly 3 mΩ at 1 A, , MΩ@...V: 3099 from the second measured value onwards. With both functions, the established measuring range is main- The digital display is refreshed at different frequencies for the tained for the subsequent series mode measurments. various measured quantities. Main Display V 23.000 MIN MAX 10.000 24.000 Auxiliary Display MIN Auxiliary Display MAX The main display appears immediately after the multimeter is switched on, but the auxiliary displays have to be activated by pressing the DATA|CLEAR key (except for position MΩ@...V, where the auxiliary displays appear immediately upon selecting the function). This assures that any undefined existing condition which prevailed when measurement was started is not continuously displayed as a maximum value, e.g. no-load operation. In the following flowcharts, the initial displays are highlighted through the use of a bold border line. DranTech PMIT User’s Guide 7 5 Measured Value Storage The DranTech PMIT provides two entirely different options for storing data: • Measured Value Memory – DATA Key Function: V DATA Each time a measuring point is contacted, a measured value 30.000 is stored in accordance with a defined condition (see chapter 5.1). 20.000 dAtA • Memory Mode Operation – STORE Menu Function: After activating the STORE menu function, all measured Acoustic Signal DATA values are saved in accordance with the selected sampling rate. Memory mode operation is ended manually using the MAN same menu function, see chapter 12.2. V In both cases, saved measured values can be read out with the 30.000 help of DranWin®10 PC software (as of version 5.22). However, MIN MAX read-out is only possible if a USB-HIT adapter has been plugged 20.000 30.000 into the DranTech PMIT and connected to the PC with an inter- face cable. 5.1 Measured Value Storage – Key Function “DATA” Comparison of measurement values (DATA Compare) (Hold/Compare) If the newly stored measurement value deviates less than 0.33% Measured values can be automatically “frozen” with the DATA of the measuring range from the first measurement value, the hold function. This is useful when, for example, contacting the acoustic signal (DATA Compare) sounds twice. measuring points with the test probes requires your full attention. If it deviates more than 0.33% from the measuring range, only a brief signal sonds. Memory should be cleared before starting a measurement series with the DATA key function. Condition Response at Instrument This assures, on the one hand, that adequate memory capacity is Function ⇓ Sub-Display Measur- available and, on the other hand, that only data from the last mea- Measurement Acoustic DATA DATA ing Func- Meas. surement series are read out in a contiguous fashion. Check cur- Value Signal dAtA tion Value rent memory occupancy to this end: Switch on brief brief INFO MEMO/OCCUP Store V, Hz > 10% of MR Clear memory if required: MEMO CLEAr. is (stabilized is brief displayed measure- displayed 2x 2) Ω, 0 L ment value) After the measured value has been applied and the corresponding V, Hz < 10% of MR stored “condition” from the table below has been fulfilled, the measured Reactivate 1) meas. blinks value appears at the left-hand auxiliary display and 2 acoustic Ω, 0 L value signals are generated. At the same time, “MAN” appears, Switch to indicating that the measuring range is now fixed. The test probes function brief see Table chapter 6 MIN/MAX can now be removed from the measuring points, and the measured value can be read from the auxiliary display. If the is is Quit long 2x deleted deleted measured value is less than the value specified in the table, the 1) Reactivation results from falling short of specified measured value limits. instrument is reactivated for storage of the next value and “data” 2) When a measurement value is stored for the first time as a reference value, the blinks at the display. The measured value is saved to non-volatile acoustic signal sounds twice. memory, which is acknowledged by an acoustic signal in each For subsequent data hold, two acoustic signals are only generated if the currently case. frozen value deviates from the fist saved value by less than 0.33% of the measuring range, depending upon resolution. Key R = measuring range, MV = measured value As long as the DATA function is active, the measuring ranges should not be changed manually. The DATA function is deactivated if the DATA|CLEAR key is pressed and held (approx. 1 s), by turning the rotary switch or by switching the instrument off and back on again. 8 DranTech PMIT User’s Guide 6 Saving Minimum and Maximum Values “MIN/MAX” with Time Stamp Minimum and maximum values can be displayed at the auxiliary V displays for long-term observation of measured quantities. 30.000 ➭ Press the DATA|CLEAR key twice: Current MIN and MAX values appear at the auxiliary displays. Automatic range selection is disabled as long as the MIN/MAX function is active. DATA Current Measured Value ➭ Press the DATA|CLEAR key once again for a display of the minimum value and the time of its occurrence. ➭ Press the DATA|CLEAR key once again for a display of the V maximum value and the time of its occurrence. 30.000 The MIN and MAX values are deleted by pressing and holding the DATA|CLEAR key (approx. 1 s), by turning the rotary blinks 10.000 data switch, or by switching the instrument off and back on again. DATA Response from Instrument Current Measured Value MIN and MAX Function ⇓ Measured Values / Display MAN Acoustic MIN/MAX DATA Time of Aux. Signal Measurement Main Display V Display 30.000 1. 2 x MIN MIN MAX are Save short and 1 x saved MIN MAX MAX 10.000 30.000 Current short measured t and 2. 1 x value MIN Save and are DATA Display saved short t and Current Measured Value 1 x MAX MAN 3. Return to are same as V short same as 1 1 x 1 saved 1 30.000 MIN tMIN MIN long is 09:20:05 10.000 Stop are deleted is deleted 2 x deleted DATA Current Measured Value Note! MAN No new MIN/MAX values are calculated for a period of V 2 to 4 seconds after the measuring range has been 30.000 changed (depending upon measuring function), in order MAX to allow measured values to settle in. tMAX 09:20:05 30.000 MAX DATA short CLEAR long DranTech PMIT User’s Guide 9 7.1.1 Zero Balancing in the 3 V DC Measuring Range 7 Voltage and Frequency Measurement ➭ Select the 3 V measuring range. ➭ Plug the measuring cables into the instrument and connect the free ends to each other. V 226.000 ➭ Press the FUNC key. V~ The instrument acknowledges zero balancing with an acoustic Hz signal, and “0.0000 V” and the “ZERO” symbol appear at the display. The voltage value measured at the moment the key is pressed serves as a reference value (2000 digits). It is FUNC FUNC automatically subtracted from all subsequent measured values. If the measuring range is changed (MAN key), the ZERO function only remains active (at the display and in memory) for the selected measuring range. 050.00 Hz ➭ Zero balancing can be deleted: – By once again pressing and holding the FUNC key, which is acknowledged with two acoustic signals (ZERO is deleted in the display) 7.1 Voltage Measurement [V] – By switching the instrument off ➭ Select voltage type V or V~/Hz with the rotary selector switch as appropriate for the measured quantity. 7.1.2 Transient Overvoltages ➭ Connect the measurement cables as shown. The multimeter is protected against transient overvoltages of up The “⊥” connector jack should be grounded. to 4 kV with rise times of 1.2, and halftimes of 50 μs. For ➭ The V~/Hz selector switch position: Each time the FUNC measurements at transformers or motors with long pulse key is pressed, voltage and frequency measurement are durations etc., we recommend the use of our KS30 measuring alternately selected, and switching is acknowledged with an adapter. It provides protection against transient overvoltages of acoustic signal. The respective measured quantity is up to 6 kV with rise times of 10, and halftimes of 1000 μs. It has a displayed at the LCD. continuous load capacity of 1200 VRMS. Additional influence error caused by the KS30 measuring adapter amounts to Note! approximately –2%. An intermittent acoustic signal warns the operator if the measured value exceeds the upper range limit in the 600 V range. Attention! ! Make sure that a current measuring function (Ω, mΩ, MΩ) or a C measuring function (°) has not been selected when the multimeter is connected for voltage measurement! If fuse blowing limits are exceeded as a result of operator error, both the operator and the instrument are in danger! Measuring Ranges: mΩ VΩ°C S– S+ V: 0.1 mV … 600 V Hz: 1 Hz … 3kHz – (+) ~ max. 600 V (3 kHz) + (–) ~ 10 DranTech PMIT User’s Guide 7.2 Frequency Measurement [Hz] 8.1 Resistance Measurement (2-wire connection) [Ω] ➭ Select the V~/Hz measuring function with the rotary selector ➭ Make sure that the device under test is voltage-free (see switch. chapter 7.1). Interference voltages distort measurement results and damage the instrument! ➭ Apply the measured quantity as described under voltage measurement. ➭ Set the rotary selector switch to “Ω”. ➭ Briefly press the FUNC key in order to measure frequency. ➭ Connect the device under test as shown. The frequency values appears at the main display. The Note! frequency measuring range can be selected subsequently by High Impedance Measurements in the 3 MΩ/30 MΩ pressing MAN|AUTO. The previously selected voltage Range measuring range remains active. In the event of extremely high resistances the capacitive ➭ The instrument can be switched from frequency influence of the person performing the measurement and/ measurement back to alternating voltage measurement by or the measuring cable may distort the measured value. pressing the FUNC key once again. This selection is Use therefore short or shielded measurement cables. acknowledged with an acoustic signal. Note! Frequency measurement is only possible if the measuring mΩ Overall measuring range: signal passes through zero (AC coupling). VΩ°C S– S+ Ω: 10 mΩ … 30 MΩ 8 Resistance and Diode Measurements – Rx + Ω 0.L kΩ Voltage Drop 8.1.1 Zero Balancing in the 300 Ω and 3 kΩ Measuring Ranges Cable and contact resistances can be eliminated for the measurement of small resistance values in the 300 Ω and 3 kΩ FUNC ranges by means of zero balancing: ➭ Plug the measuring cables into the instrument and connect the free ends to each other. ➭ Press the FUNC key. V The instrument acknowledges zero balancing with an acoustic 0.5435 FUNC signal, and “000.00 Ω” or “0.0000 kΩ” and the “ZERO” symbol appear at the display. The resistance value measured at the di odE moment the key is pressed serves as a reference value (max. 20 Ω, or 200 Ω, or 2000 digits). It is automatically subtracted from all subsequent measured values. If the measuring range is changed FUNC (MAN|AUTO key), the ZERO function remains active (at the display and in memory). ➭ Zero balancing can be deleted: – By once again pressing and holding the FUNC key, which is Ω acknowledged with two acoustic signals, 000.0 – By switching the instrument off. Short DranTech PMIT User’s Guide 11 8.2 Continuity Test during Resistance Measurement 8.3 Diode Measurements If the “acoustic signal ” function is activated and the 0 ... 310 Ω ➭ Make sure that the device under test is voltage-free (see measuring range is selected, a continuous acoustic signal is chapter 7.1). Interference voltages distort measurement generated by the instrument within a range of 0 to approx. 10 Ω. results! Overflow “0L” is displayed where Rd > 310 Ω. ➭ Set the rotary selector switch to “Ω/ / ”. ➭ Briefly press the FUNC key for diode measurement. Unit of Activating and Deactivating Continuity Testing (acoustic signal) measure “V” and “d iode” are then displayed if the connector ➭ Set the rotary selector switch to “Ω/ / ”. jacks are open (Display 0.L). ➭ Repeatedly press the FUNC key until and “Short” appear ➭ Connect the device under test as shown. at the display, provided the connector jacks are open (Display 0.L). ➭ Connect the measurement cables to the device under test. mΩ ➭ The instrument is switched to resistance measurement by VΩ°C S– S+ pressing the FUNC key once again. Conducting Direction Reverse Direction Conducting Direction and Short-Circuit The instrument displays conducting-state voltage in volts. As long as voltage drop does not exceed the maximum display value of 3 V, several series connected components or reference diodes can be tested. Reverse Direction or Interruption Overload (.0L) is displayed at the instrument for diode measurements where Ud > 3.1 V. Measuring current is always a constant current of approximately 1 mA. Note! Resistors and semiconductors which are connected in parallel to the diode distort measurement results! 12 DranTech PMIT User’s Guide V Ω° C m Ω S+ S– 9 Milliohm Measurement (4-Pole-Measurement) MAN 9.1 Compensation of Cable Resistance Electrical resistance is a dipole quantity which can generally only mΩ be measured using two poles. This is accomplished by directing a 0 1. 180 m Ω measuring current of predetermined magnitude through the device under test, and measuring the resultant voltage drop. The respective resistance value is derived from the quotient of these two values. The two points between which voltage is measured are decisive FUNC as regards the results of the measurement. All resistances between these two points add to the measured resistance value. These include contact resistance, as well as cable resistance. If a very MAN Measure low resistance value needs to be measured, for example contact Thermo- resistance at a contactor with a value of only a few milliohms, the m Ω voltage points between which voltage is measured must be moved out of 00.0 10 FUNC the measuring instrument and positioned as closely as possible to long the device under test. For this reason, the measuring instrument is tErMoC equipped with separate jacks for current feed and voltage measurement. This type of 4-pole connection is known as connection according to Kelvin. FUNC FUNC KC27 Kelvin probes (available as accessories) allow for easy, correct connection. MAN ZERO Thermo- 9.1.1 Measurement with Kelvin Probe KC27 voltage m Ω Compensated black 0 1. 170 Measurement Results red Measuring Ranges: MAN black 30 mΩ∗/300 mΩ∗ at 200 mA 3 Ω / 30 Ω at 20 mA Note: mΩ When using KC27 VΩ°C Milliohm measurement on con- S– S+ always set red plug at ductor bars, welds, coils up to 1 S+ or S–, respectively. H, etc. with Kelvin probe KC27 Direct the spring-loaded test probes inward towards the DUT, if possible, as they are connected Measurement Cables, via the red plugs with S+ or S– KC27 (Sense) . Overall Measuring Range: mΩ: 0,001 mΩ … 30 Ω Rx + – 9.2 Thermovoltage Compensation Voltage Drop Measuring Current Thermovoltages which occur as a result of material and Note! temperature differences may distort measurement results. For this reason, the instrument is equipped with automatic thermovoltage If the measuring current is interrupted during 4-wire- compensation in the relevant measuring ranges. mΩ-measurement or if the fuse is defective, the message “leads open” flashes on the display. If fuse is defective, see chapter 14.2. DranTech PMIT User’s Guide 13 9.3 Milliohm Measurement with 200 mA or 20 mA DC [mΩ] 10 Temperature Measurement [°C] ➭ Make sure that the device under test is voltage-free (see Resistance thermometers (available as accessories) are used for chapter 7.1). Interference voltages distort measurement temperature measurement. A 2-pole measurement is utilized. results! Cable resistance is set to 0.1 Ω as a default value. ➭ Set the rotary selector switch to “mΩ”. ➭ Connect the device under test as shown. KC27 Kelvin probes (available as accessories) allow for easy, correct connection. °C SEnSr Resistance at the current jacks should amount to < 1 Ω. RTD FUNC ➭ If applicable, select the desired measuring range using the Pt 1000 SELCt MAN|AUTO key: 30 mΩ, 300 mΩ, 3 Ω or 30 Ω. °C / °F This measuring method is suitable for resistances with Pt100 inductances of up to 1 H. Pt1000 (TF220) Ni100 FUNC Thermovoltage Correction in the 30/300 mΩ Range Ni1000 ➭ Press the FUNC key in order to measure thermovoltage. Wait until the measured value has settled in. This may take several seconds, depending upon inductivity. Then press the FUNC °C key once again in order to return to the milliohm measuring 0023.2 function. All future measurement result will be corrected based upon the previously measured thermovoltage value. Pt 1000 ZERO appears at the display in order to indicate active compensation. Measurements at Inductive Devices + FUNC Coils in motors, choke ballasts and contactors are highly inductive. Changes in current at inductive devices, including switching the milliohmmeter on and off or changing the measuring range, result in a corresponding voltage change. These changes may be of significant magnitude, and may result in Ω 00. 10 arcing under unfavorable conditions. The milliohmmeter is protected against arcing by means of suitable voltage arrestors. Cable rLEAd tEMP Resistance 9.4 Milliohm Measurement with 1 A Pulsating Measuring 0 … 50 Ω Current [mΩ@1 A] (automatic thermovoltage correction in 3 … 300 mΩ range) ➭ Make sure that the device under test is voltage-free (see Selecting Temperature Unit of Measure and Sensor Type chapter 7.1). Interference voltages distort measurement ➭ Set the rotary selector switch to “°C”. Press FUNC to access results! the selection menu for temperature unit of measure and ➭ Set the rotary selector switch to “mΩ@1A”. sensor type. SEnSr and SELCt are displayed. ➭ Connect the device under test as shown. ➭ Press the FUNC key to select the desired temperature unit of KC27 Kelvin probes (available as accessories) allow for easy, measure: °C or °F. correct connection. ➭ Select the sensor type (RTD) with the keys. Resistance at the current jacks should amount to < 0.2 Ω. ➭ Connect the sensor to the two jacks (see diagram). ➭ If applicable, select the desired measuring range using the MAN|AUTO key: 3 mΩ, (30 mΩ or 300 mΩ) Thermovoltage is compensated automatically. Note! The selected temperature unit of measure and sensor type remain unchanged after exiting the function, and when Note! the instrument is switched off. Due to high current consumption during this measurement, NiMH rechargeable batteries should be installed and the NA HIT2x mains power battery charger should be used. 14 DranTech PMIT User’s Guide 11 Insulation Resistance Measurement [MΩ@...V] Measuring Range: mΩ VΩ°C S– S+ see chapter 14 - - - - - MΩ@ V -000 250 V 50 ... 500V Selected Test Voltage Continuous Measurement Displays test voltage + FUNC FUNC MAN as long as key is depressed RTD RISO 10.29 MΩ Adjusting Cable Resistance Measuring voltage Nominal/ V /Residual voltage ➭ After selecting a resistance thermometer, the measurement 023 250 V test voltage approx. 2% accuracy display is accessed by pressing the key. ➭ The menu for cable resistance adjustment is opened by simultaneously pressing the and keys. RLEAd and tEMP 11.1 Preparing for Measurement are displayed. Note! ➭ The decade (i.e. the position of the digit to be changed) is High-resistance measurements selected with the keys, and the respective digit is set In the event of extremely high resistances the capacitive with the keys. influence of the person performing the measurement and/ ➭ The menu is exited upon acknowledging the last digit by or the measuring cable may distort the measured value. pressing the key, whereupon the measuring display Use therefore short or shielded measurement cables. returns. The cable resistance value remains in memory. The The measurement cables may not come into contact with default value is 0.1 Ω. Entry is limited to a range of 0 to 50 Ω. one another during high-resistance insulation measurements. Note! The selected cable resistance value remains unchanged ➭ Set the rotary selector switch to “MΩ@50V”, “100V”, after exiting the function, and when the instrument is “250V” or “500V”, depending upon the desired test voltage. switched off. ➭ Connect the DUT as shown on the next page. Note! Interference voltage The rotary selector switch may only be set to MΩ@...V for insulation resistance measurement (not for voltage measurement). However, if interference voltage is inadvertently applied with the switch in this position, it is displayed at the bottom left. Insulation resistances may only be measured on voltage-free objects. If an interference voltage of > 50 V is present, insulation resistance measurement is disabled. The LCD continues to display the interference voltage value. If a voltage of greater than 610 V is present, an acoustic signal is generated as well. DranTech PMIT User’s Guide 15 11.2 Insulation Resistance Measurement Note! ➭ Press and hold the FUNC key until the display settles in, in Testing the Measurement Cables order to measure insulation resistance. Initial testing should be performed by short-circuiting the measurement cables using their test probes. The Attention! ! instrument must display nearly 0 Ω. A broken The selected and displayed test voltage blinks during measurement cable can be detected in this way. measurement. Attention: Contact hazard! Current voltage at the device under test appears at the mΩ Measuring Range: interference or residual voltage display during measurement. This MΩ S– S+ value is slightly less than nominal voltage. Ω: 10 kΩ … 3GΩ Insulation resistance measurement is ended by releasing the FUNC key. Auto-ranging is active during insulation resistance measurement. Manual measuring range selection is not possible. UMeasured (50 to 500V) Note! RISO The instrument’s rechargeable batteries are rapidly depleted during insulation resistance measurement. Only hold the multifunction key depressed as long as is actually necessary. The continuous measurement ! described below should only be performed if absolutely necessary. Use NiMH rechargeable batteries only. Attention! ! Continuous Measurement Do not touch the conductive ends of the test probes when the instrument has been activated for the ➭ Activation: Briefly press the multifunction key and the measurement of insulation resistance. MAN|AUTO key simultaneously. This is acknowledged You may otherwise be exposed to a current of 1.5 mA with an acoustic signal. (limited in the measuring instrument), and although this ➭ Deactivation: Briefly press the multifunction key. is not life endangering, the resulting electrical shock is quite discernible. 11.3 Ending the Measurement and Discharging If, on the other hand, measurement is being performed After measurement has been completed, any remaining residual on a capacitive device under test, for example a cable, it voltage is displayed which may result from cable capacitance. may be charged to approximately ±600 V, depending These charges are quickly dispersed by means of two internal upon the selected nominal voltage. resistors with a value of 2 MΩ. However, contact to the device Touching the device under test after measurement has under test must be maintained. The falling voltage value can be been performed may be life endangering in this case! observed at the interference or residual voltage display. Do not disconnect the device under test until the voltage value has dropped to below 25 V! 16 DranTech PMIT User’s Guide 12.2 Saving Measured Values 12 Using the Menus – from the Initial INF0 Menu to DranTech PMIT provides two entirely different options for stor- Operating and Measuring Parameters ing data: Menu-driven operation via the initial “InF0” menu allows the user to query online help, activate the memory and query memory • Measured Value Memory – DATA Key Function: occupancy, activate the interface and configure device Each time a measuring point is contacted, a measured value parameters. is stored in accordance with a defined condition (see chapter 5.1 and chapter 12.2.1). ➭ The initial “InF0” menu is accessed by simultaneously pressing and holding the FUNC and ON|OFF keys with the • Memory Mode Operation – STORE Menu Function: instrument switched on, until “InF0” appears at the display. After activating the STORE menu function, all measured values are saved in accordance with the selected sampling ➭ The display can be switched from the main “InF0” menu to rate. Memory mode operation is ended manually using the the other main menus including “StorE”, “MEMo”, “SEnd” same menu function. and “SEt”, and then back to the “InF0” menu, by repeatedly In both cases, saved measured values can be read out with the pressing the keys. help of DranWin®10 PC software (as of version 5.22). However, ➭ After accessing the desired main menu, the associated read-out is only possible if a USB-HIT adapter has been plugged submenus are opened by activating the key. into the DranTech PMIT and connected to the PC with an inter- ➭ The desired parameter or the desired function is selected by face cable. repeatedly pressing the keys. ➭ Acknowledge with the key in order to change the 12.2.1 Memory Mode – DATA Key Function (see also chapter 5.1) corresponding parameter or parameters. The instrument is equipped with a measured value memory ➭ After the desired digit has been selected with the keys (32 kB) which is synchronized with a quartz movement, and has and the value has been adjusted with the keys, the next an average capacity of 1000 measured values. Minimum capacity digit is accessed with the key, or the display is returned to is 800 measured values and maximum capacity is 1200 measured the start menu or switched to the next submenu. values. Data are stored and can be transmitted directly to a PC with the ➭ The measuring mode is started by repeatedly pressing the DranWin®10 software. Date and time must be reset if the FUNC key until the measuring display appears. rechargeable batteries are depleted or the batteries or ➭ The multimeter is switched off by pressing and holding the rechargeable batteries are replaced. ON|OFF key until the display goes blank. Measured values are stored in so-called blocks. Measured values The following pages include an overview of the menu structure. resulting from the same measuring function are saved to the same block. Only absolute values and absolute time stamps can be saved, i.e. 12.1 Sampling rAtE no relative or Δ values, and no relative time stamps. The sampling rate specifies the time interval after which the Memory content can only be read out with the help of a PC, a respective measured value is transmitted to the interface or to USB-HIT adapter, and DranWin®10 analysis software. measured value memory. Stored measurement data blocks are retained even if the Certain sampling rate limit values apply to various measured instrument is without voltage supply. quantities, and these may not be exceeded (see table below). Preparing for Memory Mode Operation Measured Quantity Sampling Rate ➭ First set the sampling rate for memory mode operation, and V 0.5 s then start memory mode operation. V ∼, 0.5 s The sampling rate can also be changed during memory mode mΩ, Ω , °C (Pt100, Pt1000) 0.5 s operation. Hz 1 s ➭ First select the desired measuring function and an appropriate mΩ@1A 1.5 s measuring range. ➭ Check the rechargeable battery charge level before starting long-term measurement recordings (see chapter 14.1 on page 25). Connect the mains power battery charger if applicable. DranTech PMIT User’s Guide 17 12.2.2 Memory Mode Operation – STORE Menu Function 12.3 Querying Memory Occupancy – INFO MEMO/OCCUP Memory occupancy can be queried from the “InF0” menu. The ➭ First set the sampling rate for memory mode operation, and main display shows current occupancy as a percentage between then start memory mode operation. 001 and 100% The sampling rate can also be changed during memory mode operation. 12.4 Clearing the Memory – MEMO CLEAr ➭ First select the desired measuring function and an appropriate measuring range. Attention! ! ➭ Check the rechargeable battery charge level before starting This function deletes all measured values from memory. long-term measurement recordings, see chapter 14.1 on page 25. Connect the charger if necessary. This function cannot be performed during memory mode; bUSYMEMO is displayed instead of CLEAR. Starting Memory Mode Operation with Menu Functions ➭ Open the “Operating Mode” menu (refer to the menu dia- gram) and select the StorE function. 12.5 Activating the Default Values ➭ Now activate the key to open the start menu for memory Previously entered changes can be undone, and the default mode operation: StArt blinks. settings can be reactivated. This may be advisable after the Activate the key once again in order to start memory mode occurrence of software or hardware errors. operation: REM appears at the display. ➭ Simultaneously press and hold the FUNC, MAN|AUTO and ➭ Press the key in order to switch to the measuring function. DATA|CLEAR keys, and switch the instrument on with the A new memory block is created when another measuring function ON|OFFkey. is selected with the rotary switch or the FUNC key. Data storage then continues automatically. The “SLEEP MODE” is still active, i.e. the device is switched on and off automatically at sampling rates of long duration (see chapter 2). When memory capacity has been exhausted, MEMO FULL appears at the display, and an acoustic signal is generated simultaneously. The signal can be deactivated by pressing any key. REM Display The REM symbol indicates that memory mode operation has been activated via menu function STORE. Press the key if you wish to monitor the measured values also during the memory process. The “STORE” function cannot be started while the “DATA” function is activated. Exiting Memory Mode Operation with Menu Functions ➭ Select the StorE menu. ➭ Activate the key: StOP blinks. ➭ Activate the key once again: the auxiliary displays are cleared. Memory mode operation has now been deactivated. ➭ Press the key in order to return to the measuring function. ➭ Memory mode operation can also be exited by switching the instrument off. 18 DranTech PMIT User’s Guide 12.6 Transmission Mode Operation with RS 232 Interface The DranTech PMIT is equipped with a bi-directional infrared interface for the transmission of measurement data to a PC. Data are transferred optically through the instrument housing by means of infrared light to an interface adapter (accessory USB-HIT), which is attached to the instrument. The adapter’s RS 232 interface allows for the establishment of a connection to the PC via an interface cable. Beyond this, commands and parameters can be transmitted from the PC to the instrument as well. The following functions can be executed: • Configuration and read-out of measuring parameters • Measuring function and measuring range selection • Start measurements • Read out measured values Activating the Interface The interface is switched on manually as described below for transmission mode operation. The instrument continuously transmits measurement data to the PC via the interface adapter in this operating mode. The interface is activated automatically by the PC for receiving operation (i.e. the instrument receives data from the PC). Starting Transmission with Menu Functions InFO SEnd StArt The symbol blinks at the display in order to indicate interface operation. Automatic Activation and Deactivation of the Transmission Mode If the sampling rate is 20 s or longer, the display is switched off automatically between samples in order to prolong rechargeable battery or battery service life. Exception: continuous operation As soon as an event occurs, the display is automatically switched back on. Configuring Interface Parameters Addr – Address If several instruments are connected to the PC via interface adapters, an unique address must be assigned to each device. Address 1 should be used for the first device, address 2 for the second etc. If only one multimeter is utilized, an address between 1 and 14 should be used. Address 15 is not used for addressing, i.e. the device with address 15 always responds, regardless of the actual address. DranTech PMIT User’s Guide 19 Main Menus and Submenus Query Information + FUNC ON 2x V 1nF0 3.9 8 01 t im e d a t e t C a l t a d J ↵ bAtt MEM0 oCCuP 12:58:08 1508.02 1508.02 1508.02 Rechargeable Memory Current Time Current Date Calibration Date Balancing Date Occupancy Battery (see chapter 12.3) Charge Level Memory Mode Menu StArt blinks StOP blinks StorE StorE Activate: Activate: Memory mode active Memory mode inactive 0FF/0n StArt/StOP REM is displayed REM is displayed Delete Memory Menu (see chapter 12.4) During memory ! mode the memory cannot be deleted, MEMO Clear Selection must blink: Selection bUSYMEMO is YES: delete memory acknowledge displayed no: do not delete YES no instead of “EMPtY” appears at the display CLEAr. Transmission Mode (see chapter 12.6) SEnd SEnd StArt blinks StOP blinks Activate: Activate: Transmission mode active no Transmission mode 0FF/0n StArt/StOP blinks does not blink Current Status Configure Device Parameters (see chapter 12.1) See next page for SEt SEt more submenus rAtE 20 DranTech PMIT User’s Guide SEt Submenu for rAtE, Addr, dAtE and tIME Parameters Continued from previous page Set Sampling Rate (see also chapter 12.1) SEt SEt Change Acknowledge Value Sampling Rate rAtE 00: 10:00 rAtE Possible Settings (hh:mm:ss, h = hours, m = minutes, s = seconds) 00:00:01, 00:00:02, 00:00:05, 00:00:10, 00:00:20, 00:01:00 00:02:00, 00:05:00, 00:10:00, 00:20:00, 01:00:00; 0.50 = 500 ms Set Time Select Change Acknowledge SEt SEt Position Value Selection Digit tiMe 13: 15:21 tiME blinks Possible Settings (hh:mm:ss, hh=hours, mm=minutes, ss=seconds) Set Date SEt SEt Select Change Acknowledge Position Value Selection dAtE 13.08.02 dAtE Possible Settings (DD:MM:YY, DD=day, MM=month, YY=year) Set Device Address SEt SEt Change Acknowledge Value Address 15 Addr Addr Possible Settings (see also chapter 12.6): 0 … 15 DranTech PMIT User’s Guide 21 13 Characteristic Values Intrinsic Error at Max. Resolution Resolution at Upper Overload Capacity under Reference Conditions Input Impedance 3) Measuring Range Limit Measuring Range Function ±(...% rdg. + ... d) ±(...% rdg. + ... d) 4¾ 30000 / 3¾ 3000 1) DC AC 6) DC AC 6) Value Time 3 V 100 μV 2.1 MΩ 2.1 MΩ // <50pF 0.1 +10 4) 0.2 + 10 (>500d) 600 V DC 30 V 1 mV 2.1 MΩ 2.1 MΩ // < 50 pF 0.1 + 5 0.2 + 10 (>500d) V AC Cont. 300 V 10 mV 2.1 MΩ 2.1 MΩ // < 50 pF 0.1 + 5 0.2 + 10 (>500d) RMS 600 V 100 mV 2.1 MΩ 2.1 MΩ // < 50 pF 0.1 + 5 0.2 + 10 (>500d) sine Open-circuit voltage Meas. current approx. ±(...% rdg. + ... d) 3 mΩ 0.001 mΩ 3.5 … 4 V 1 A 7) 1 + 10 ±0.6 V mΩ@1A 30 mΩ 0.001 mΩ 3.5 … 4 V 1 A 7) 0.5 + 10 Cont. (4 L) 11) 300 mΩ 0.01 mΩ 3.5 … 4 V 1 A 7) 0.5 + 10 30 mΩ 0.01 mΩ 3.5 … 4 V 200 mA ±0.6 V mΩ 300 mΩ 0.01 mΩ 3.5 … 4 V 200 mA 0.25 + 10 Cont. 11) 3 Ω 0.1 mΩ 3.5 … 4 V 20 mA (4 L) 4) 30 Ω 1 mΩ 3.5 … 4 V 20 mA 300 Ω 10 mΩ 3.5 … 4 V 1 mA 0.1 + 10 4) 3 kΩ 100 mΩ 3.5 … 4 V 100 μA 0.1 + 5 4) Ω 30 kΩ 1 Ω 3.5 … 4 V 20 μA 0.1 + 5 600 V DC 300 kΩ 10 Ω 3.5 … 4 V 20 μA 0.1 + 5 (2 L) max. 10 AC 3 MΩ 100 Ω 3.5 … 4 V 10 μA 0.1 + 5 s RMS 30 MΩ 1 kΩ 3.5 … 4 V 10 μA 1.5 + 10 sine 300 Ω 0.1 Ω 3 V 1 mA 1 + 5 3 V 0.1 mV 3 V 1 mA 1 + 5 Test Voltage Measuring Current 30 MΩ 0.01 MΩ 50/100/250/500 V 2+ 10 MΩ@ 600 V max. 10 300 MΩ 0.1 MΩ 50/100/250/500 V < 1.5 mA 2 + 10 DC/AC s ...V 3000MΩ 10) 1 MΩ 50/100/250/500 V 3 + 10 fmin 2) ±(...% rdg. + ... d) 300 Hz 0.01 Hz 600 V Hz 1 Hz 0.05 + 5 5) Cont. AC 3 kHz 0.1 Hz Temperature Intrinsic Error at Max. Resolution under Reference Conditions Measuring Range Resolution Sensor ±(...% rdg. + ... d) 8) Pt 100 9) –200.0 … +100.0 °C 1 K + 5 +100.0 … +600.0 °C 0.5 + 5 600 V DC Pt 1000 –200.0 … +100.0 °C 1 K + 5 max. °C/°F 0.1 °K AC 10 s +100.0 … +600.0 °C 0.5 + 5 RMS Ni 100 –60.0 … +180.0 °C 0.5 + 5 sine Ni 1000 –60.0 … +180.0 °C 0.5 + 5 1) 5) Display: 3¾ places in the range of 3 mΩ@1A, 30 mΩ, , MΩ@...V; Range 3 V~: UE = 0.15 Veff/rms . . . 3 Veff/rms A different sampling rate can be selected in the rAtE menu for saving and 30 V~: UE = 1.5 Veff/rms . . . 30 Veff/rms transmitting measured values. 300 V~: UE = 15 Veff/rms . . . 300 Veff/rms 2) Lowest measurable frequency for sinusoidal measuring signals symmetrical to the 600 V~: UE = 30 Veff/rms . . . 600 Veff/rms zero point 3) At 0° …+40° C For voltages > 100 V: power limiting of 1.8 · 106 V · Hz 4) 6) ZERO is displayed for “zero balancing” function. 20 … 45 … 65 Hz … 1 kHz sine, see influences on page 23. 7) Pulsating measuring current with interval of T = 1 s 8) Plus sensor deviation 9) Temperature value is calculated from the characteristic curve per EN 60751 10) In the event of extremely high resistances the capacitive influence of the person performing the measurement and/or the measuring cable may distort the measured value. Use therefore short or shielded measurement cables. 11) In the event of an overload, the integrated FF1.6A/1000V fuse is triggered. Key rdg. = reading (measured value), R = measuring range, d = digit(s), 2/4 L = 2/4-wire connection 22 DranTech PMIT User’s Guide Influencing Quantities and Influence Error Reference Conditions Ambient temperature +23° C ±2K Influence Error Influencing Sphere of Measured Quantity / ± (... % rdg. + d)/ Relative humidity, 40 ... 60% Quantity Influence Measuring Range 1) 10 K Measured quantity V DC 0.1 + 5 frequency 45 ... 65 Hz V AC 0.5 + 5 Measured quantity mΩ@ 1 A 4L 1 + 5 waveshape Sinusoidal, deviation between RMS 0 … +21 °C and rectified value < 0.1% mΩ@ 200 mA 4L 1 + 5 Rechargeable battery voltage3.6 V ±0.2 V 300 Ω … 300 kΩ 2L 0.2 + 5 and Temperature 3 MΩ 2L 0.5 + 5 +25… 30 MΩ 2L 1 + 5 Response Time +40 °C Insulation 30 MΩ … 3 GΩ 2 + 5 Response Time (after manual range selection) Measured Quantity / Response Time Measured Quantity Hz 0.1 + 5 Measuring Range for Digital Display Step Function °C (RTD) 0.5 + 10 from 0 to 80% 1) VDC, VAC 1.5 s With zero balancing of upper range limit value mΩ@ 1 A 4L 2 s Measured mΩ 1.5 s Influencing Quantity / Influence Error 2) Frequency Quantity Measuring ± (... % rdg. + d) 300 Ω ... 3 MΩ 2 s Range from ∞ to 50% 3 GΩ ∗ 5 s of upper range limit value > 20 Hz ... 45 Hz 3V Frequency Continuity < 50 ms up to VAC > 65 Hz ... 1kHz 600.0 V 2 + 10 1.5 s 2) Specified error valid as of display values of 10% of the measuring range °C Pt100 max. 3 s from 0 to 50% >10 Hz 1.5 s Influencing Sphere of Measured Quantity / of upper range limit value Influence Error Quantity Influence Measuring Range 1) * without parallel capacity 75% Relative 3 days All measured 1 x intrinsic error humidity quantities instrument Display off LCD panel (65 mm x 30 mm) with display of up to 3 measured 1) With zero balancing values, unit of measure, type of current and various special functions. Influencing Measuring Damping Sphere of Influence Display / Char. Height 7-segment characters Quantity Range ±dB Main display: 12 mm Interference quantity max. VDC > 90 dB Auxiliary displays: 7 mm 600 V ~ Common Number of places 4¾ places 30999 steps Mode 30 V ~ > 80 dB Interference quantity max. Interference Overflow display „0. L“ appears 600 V ~ 300 V ~ > 70 dB Voltage Polarity display “–” sign is displayed if plus pole 50 Hz, 60 Hz sine 600 V ~ > 60 dB is connected to “⊥” Interference quantity: V∼, LCD test All display segments available during respective nominal value V= > 60 dB operation of the DranTech PMIT are Series Mode of the measuring range, Interference activated after the instrument is max. 600 V ~ , 50 Hz, 60 Hz sine Voltage switched on. Interference quantity max. V~ > 60 dB 600 V DC Background illumination available in DranTech PMIT Real-Time Clock Accuracy ±1 minute per month Temperature Influence 50 ppm/K DranTech PMIT User’s Guide 23 Power Supply Electromagnetic Compatibility (EMC) Rechargeable Batteries 3 ea. 1.2 V NiMH Rechargeable Interference emission EN 61326: 2002 class B Batteries (AA size) (≥ 2100 mAh) Interference immunity EN 61326: 2002 Service life with set of 2100 mAh NiMH Rechargeable Batteries IEC 61000-4-2:1995/A1:1998 Feature A: Measuring Current Service Life [h] Function [mA] / 8 kV atmospheric discharge 3.6 V 4 kV contact discharge V, Hz, Ω, , °C 70 30 IEC 61000-4-3: 1995/A1: 1998 Feature B: mΩ@1A 700 3 3V/m mΩ@200mA 260 8 mΩ@20mA 85 24 Data Interface MΩ@ ... V / 1 MΩ 100 21 Data transmission bidirectional, optical via infrared light through the housing Standby (MEM + 0.15 approx. 1 year clock) (read data and configure parameters) With interface adapter as accessory Additional consumption for: BD232 IR to RS 232C, serial, per Interface operation 0.5 mA DIN 19241, cascadable for LCD illumination 25 mA at 3.6 V multi-channel operation If voltage drops below 2.7 V, the USB-HIT IR to USB 1.1/USB 2.0, instrument is switched off single-channel operation automatically. baud rate (MM ↔ PC) 9600 baud Rechargeable battery test “ ” is displayed automatically if rechargeable battery voltage drops to Ambient Conditions below approx. 3.3 V Accuracy range 0° C ... +40° C (at mΩ@1A < 3.1 V). Operating temperature -10° C ... +50° C Rechargeable battery chargingWith NA HIT2x mains power Storage temperature -25° C ... +70° C (w/o rechargeable battery charger; e.g. set of batteries) rechargeable batteries 2100 mAh: recharging time 20 h Relative humidity 45% ... 75%, With external NiMH battery quick no condensation allowed charger Z206D: recharging time approx. Deployment Indoors only, except within 2 hours specified ambient conditions Fuses Mechanical Design Fusible links for all Protection Housing: IP 54 mΩ measuring ranges FF (UR) 1.6 A/1000 VAC/DC, Connector jacks: IP20 6.3 mm x 32 mm; 10 kA switching capacity at Extract from table on the meaning of IP codes 1000 V AC/DC and ohmic load IP XY Protection against IP XY Protection against the Acoustic signal For display > 610 V in 600 V range (1st digit X) foreign object entry (2nd digit Y) penetration of water (intermittent tone, 250 ms on/off) 0 not protected 0 not protected vertically falling Electrical Safety 1 ≥ 50.0 mm ∅ 1 drops Safety class II per IEC/EN 61010-1:2001 vertically falling /VDE 0411-1:2002 2 ≥ 12.5 mm ∅ 2 drops with enclosure tilted 15° Measurement category II 3 ≥ 2.5 mm ∅ 3 spraying water Operating voltage 600 V 4 ≥ 1.0 mm ∅ 4 splashing water Fouling factor 2 5 dust protected 5 water jets Test voltage 3.5 kV~ per IEC/EN 61010-1:2001/ VDE 0411-1:2002 Dimensions 84 mm x 195 mm x 35 mm Weight Approx. 420 gr. with rechargeable batteries (without GH18 protective rubber cover) 24 DranTech PMIT User’s Guide Recharging the Rechargeable Batteries 14 Maintenance Use only the NA HIT2x mains power battery charger (article number Z218H) from Dranetz-BMI to recharge the rechargeable Attention! ! batteries in the instrument. This assures operator safety by means Disconnect the instrument from the measuring circuit of an extremely well insulated cable, and safe electrical isolation before opening to replace rechargeable batteries, (nominal secondary ratings: 5 V/600 mA). The recharging time batteries or fuses! of the batteries (2,100 mAh) in the instrument is approx. 20 h. 14.1 Rechargeable Batteries and Batteries Before connecting the mains power battery charger to the recharging jack, make sure that: Warning! – Rechargeable batteries have been installed (not normal batteries) The mains power battery charger may not be connected – The instrument has been disconnected from the measuring if normal batteries have been installed instead of circuit at all poles. rechargeable batteries: Danger of explosion! If possible, use the mains power battery charger only for recharging rechargeable batteries, not for measurements, in order Removing the Rechargeable Batteries During Periods of Non-Use to avoid influence errors. The integrated quartz clock draws power from the rechargeable batteries, even when the instrument is switched off. It is advisable Replacing the Rechargeable Batteries to remove the rechargeable batteries during long periods of non- ➭ Set the instrument face down onto a flat working surface, use for this reason (e.g. vacation). This prevents excessive loosen the two screws at the back and lift off the housing depletion of the rechargeable batteries, which may result in base, starting at the bottom. The housing top and housing damage under unfavorable conditions. base are held together with the help of snap hooks at the top front. Checking Rechargeable Battery Charge-Level and Condition ➭ Remove the rechargeable batteries from the battery The current rechargeable battery charge level can be queried in compartment. the “Info” menu (see chapter 12 on page 17): FUNC + ON|OFF InF0 X.X V (bAtt). ➭ Insert three 1.2 V NiMH rechargeable batteries into the battery compartment, making sure that the plus and minus Make sure that no rechargeable battery leakage has occurred poles match up with the provided polarity symbols. before initial start-up, and after long periods of storage. Continue to inspect the rechargeable batteries for leakage at short, regular ➭ Important for reassembly: First set the housing base onto the intervals. housing top and align accurately (see photo below). Then press the two housing halves together, first at the bottom – If rechargeable battery leakage has occurred, carefully and front (a), and then at the top front (b). completely clean electrolyte from the instrument with a (b) (a) damp cloth, and replace the rechargeable batteries before using the instrument. – If the “ ” symbol appears at the display, the rechargeable batteries should be replaced or recharged as soon as possible. You can continue working with the instrument, but reduced measuring accuracy may result. Depleted rechargeable batteries require approximately 20 hours recharging time with the NA HIT2x mains power battery charger. Recharging ➭ Secure the housing base with the two screws. starts as soon as the instrument is connected to the mains power battery charger. If the rechargeable batteries have been excessively depleted, the instrument cannot be switched on. Attention! ! If this is the case, leave the (switched on) instrument The instrument may not be operated if the housing base connected to the charger for approximately 30 minutes, and has not been properly installed and secured! then proceed as described above. Attention! ! Rechargeable battery or battery leakage must be avoided. Resulting damage is not covered by the guarantee. DranTech PMIT User’s Guide 25 14.2 Fuses 14.4 Device Return and Environmentally Compatible Disposal The fuse is located at the measuring input. When the fuse is The DranTech PMIT is a category 9 product (monitoring and defective, the measurements in the mΩ/Ω/ / ranges are faulty. control instrument) in accordance with ElektroG (German The error in the V range amounts to only 10%. Electrical and Electronic Device Law). This device is not subject to the RoHS directive. If a fuse should blow, eliminate the cause of overload before placing the instrument back into service! We identify our electrical and electronic devices (as of August 2005) in accordance Inspecting the Integrated Fuse with WEEE 2002/96/EG and ElektroG with ➭ Set the rotary switch to the Ω measuring function. the symbol shown to the right per DIN EN 50419 . ➭ Short circuit the ⊥ and Ω jacks. These devices may not be disposed with the Display < 0.2 Ω: fuse OK trash. Please contact our service department Display approx. 200 kΩ: fuse blown or poor contact at the regarding the return of old devices (address see chapter 17). fuse holder Replacing the Fuse 15 Multimeter Messages ➭ Open the instrument as described under “Replacing the The following messages appear at the main display, or the Rechargeable Batteries” . auxiliary displays as required. See “Symbols used in the Digital ➭ Remove the blown fuse with the help of an abject such as a Display” on page 2 for messages displayed at visible segments. test probe, and replace it with a new fuse. Table of Allowable Fuses Message Function Meaning Type Dimensions Article Number 0. L Measuring Indicates overflow FF (UR) 1.6 A/1000 V AC/DC 6.3 mm x 32 mm Z109C * 4-wire-mΩ Measuring current interrupted or fuse LEAdS oPEn (10 kA) defective. * These fuses are available in packages of ten from our sales offices and distributors. Blinking Unit of Measure All measuring functions are balanced for each DranTech PMIT at the factory in accordance with the respective technical Attention! ! specification. If a unit of measure blinks, this indicates that Use specified fuses only! balancing constants which have been established and saved to the If fuses with other blowing characteristics, other current multimeter are no longer available for the respective function. If ratings or other breaking capacities are used, the this is the case, measurement results may deviate from the operator is placed in danger, and protective diodes, specification. We recommend sending the instrument to our resistors and other components may be damaged. Repair and Replacement Parts department for rebalancing (see The use of repaired fuses and short-circuiting the fuse chapter 17). holder are prohibited. 14.3 Housing No special maintenance is required for the housing. Keep outside surfaces clean. Use a slightly dampened cloth for cleaning. Avoid the use of cleansers, abrasives and solvents. Disposing of Batteries or Rechargeable Batteries Dispose of old batteries or rechargeable batteries properly, i.e. at a designated collection point. 26 DranTech PMIT User’s Guide 16 Accessories 17 Repair and Replacement Parts Service, The USB-HIT interface adapter (without memory) allows for DKD Calibration Lab* and Rental Instrument remote control of the instrument, as well as transmission of Service measurement data from up to six multimeters to a PC (in the online operating mode with DranWin®10). If service is required, please contact: Interface adapter USB-HIT is functionally identical to the BD232 Dranetz-BMI interface adapter, although bidirectional transmission takes place 1000 New Durham Road between the IR and the USB interface in this case. Edison, NJ 08818-4019 • USA The driver to be installed assigns a virtual COM interface to the Phone 1-800-372-6832 or 732-287-3680 instrument. It is not possible to set up a multi-channel system Fax 732-248-1834 with this adapter. www.dranetz-bmi.com DranWin®10 Software DranWin®10 software is used to process and display This address is only valid in United States. measurement data at a PC. Sampling can be triggered manually Please contact our representatives or subsidiaries for service in with an adjustable sampling interval, or in a signal dependent other countries. fashion. Storage of data in ASCII format can be controlled with two trigger thresholds per measuring channel, as well as by * Calibration Laboratory for Electrical Quantities means of system time. DKD – K – 19701 accredited as per DIN EN ISO/IEC 17025 Hardware Requirements Accredited quantities: direct voltage, DC value, DC resistance, alternating voltage, AC value, AC active power, AC apparent power, DC – a WINDOWS and IBM compatible PC with at least power, capacitance, frequency and temperature a 200 MHz Pentium CPU and 64 MB main memory – SVGA monitor Competent Partner – Hard disk with at least 40 MB available memory GMC-I Gossen-Metrawatt GmbH is certified per – a CD-ROM drive DIN EN ISO 9001:2000. Our DKD Calibration Laboratory has been accredited in accor- – Microsoft compatible mouse dance with DIN EN ISO/IEC 17025 by the Physikalisch Tech- – If print-outs are required: a Windows supported printer nische Bundesanstalt (Federal Institute for Physics and Technol- – 1 free COM interface for utilizing BD232 ogy) and the Deutsche Kalibrierdienst (German Calibration Ser- or vice) under registration number DKD–K–19701. – 1 USB interface for utilizing USB-HIT Our competence in the field of metrology covers test reports, Pro- prietary Calibration Certificates as well as DKD Calibration Cer- Software Requirements tificates. – MS Windows 95, 98, ME, NT4.0, 2000 or XP Our range of services is complemented by our Test Equipment Management service which is provided free of charge. An on-site DKD calibration station is an integral part of our ser- General vice department. If any faults are detected during calibration, our The extensive accessories available for our measuring specialists are able to carry out the necessary repairs with original instruments are checked for compliance with currently valid replacement parts. safety regulations at regular intervals, and are expanded as Needless to say, in our function as calibration laboratory, we cali- required for new applications. Currently up-to-date accessories brate all instruments, irrespective of the manufacturer. which are suitable for your measuring instrument are listed at the following web address along with photo, order number, description and, depending upon the scope of the respective accessory, data sheet and operating instructions: www.dranetz- bmi.com DranTech PMIT User’s Guide 27 DKD Calibration Certificate Reprints If you order a DKD calibration certificate reprint for your instrument, please provide us with the reference numbers indicated in the upper and lower most fields of the calibration seal. We do not need the instrument’s serial number. 18 Warranty The warranty period for all DranTech measuring and calibration instruments is 3 years after date of shipment. Calibration is guaranteed for a period of 12 months. The guarantee covers materials and workmanship. Damages resulting from use for any other than the intended purpose or operating errors, as well as any and all consequential damages, are excluded. 19 Product Support If required please contact: Dranetz-BMI 1000 New Durham Road Edison, NJ 08818-4019 • USA Phone 1-800-372-6832 or 732-287-3680 Fax 732-248-1834 www.dranetz-bmi.com Edited in United States • Subject to change without notice • A pdf version is available on the internet Dranetz-BMI Phone 1-800-372-6832 or 732-287-3680 1000 New Durham Road Fax 732-248-1834 Edison, New Jersey 08818-4019 • USA www.dranetz-bmi.com