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User’s Guide

DranTech PMIT

recision

illiohm

nsulation Resistance

ester

Digital Multimeter and Data Logger

M227I

2007 Rev. A

Summary of Contents for DranTech PMIT

Page 1: ...User s Guide DranTech PMIT Precision Milliohm Insulation Resistance Tester Digital Multimeter and Data Logger M227I 2007 Rev A ...

Page 2: ...gital Display 1 Main display with decimal point and polarity display 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 via the interface is ended by means of key or switch operation 5 ZERO Zero balancing 6 MAN Manual measuring range sele...

Page 3: ...Thermovoltage Compensation 13 9 3 Milliohm Measurement with 200 mA or 20 mA DC mΩ 14 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 11 Insulation Resistance Measurement MΩ V 15 11 1 Preparing for Measurement 15 11 2 Insulation Resistance Measurement 16 11 3 Ending the Measurement and Disch...

Page 4: ...or 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 No measurements may be made with this instrument in electrical circuits with corona discharge high voltage Special care is require...

Page 5: ...mal batteries which are not suited for recharging have been inserted Danger of explosion Attention As a result of internal voltage monitoring the instrument may respond as follows if the battery charge level is low Cannot be switched on Shuts back down immediately Shuts back down immediately when a load is applied in the mΩ range If this is the case replace or recharge the rechargeable batteries A...

Page 6: ...isplays to appear and may disable the measuring sequence In such cases switch the instrument off and back on again in order to reset If the problem persists briefly dislodge the 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 3 Selecting Measuring Funct...

Page 7: ...layed as well A minus sign appears to the left of the value during the measurement of zero frequency quantities if the plus pole of the measured quantity is applied to the input OL overload appears if the measuring range upper limit is exceeded for the following measured quantities V AC V DC Hz Ω mΩ 30 300 mΩ at 1 A 30999 3 mΩ at 1 A MΩ V 3099 The digital display is refreshed at different frequenc...

Page 8: ...asuring range is now fixed The test probes can now be removed from the measuring points and the measured value can be read from the auxiliary display If the measured value is less than the value specified in the table the instrument is reactivated for storage of the next value and data blinks at the display The measured value is saved to non volatile memory which is acknowledged by an acoustic sig...

Page 9: ...ng the instrument off and back on again Note No new MIN MAX values are calculated for a period of 2 to 4 seconds after the measuring range has been changed depending upon measuring function in order to allow measured values to settle in Function MIN MAX DATA MIN and MAX Measured Values Time of Measurement Response from Instrument Display Acoustic Signal Main Display Aux Display 1 Save 2 x short ar...

Page 10: ...ach other Press the FUNC key The instrument acknowledges zero balancing with an acoustic 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 automatically subtracted from all subsequent measured values If the measuring range is changed MAN key the ZERO function only remains active at...

Page 11: ...n the 3 MΩ 30 MΩ Range 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 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 t...

Page 12: ...t the device under test is voltage free see chapter 7 1 Interference voltages distort measurement results Set the rotary selector switch to Ω Briefly press the FUNC key for diode measurement Unit of measure V and d iode are then displayed if the connector jacks are open Display 0 L Connect the device under test as shown Conducting Direction and Short Circuit The instrument displays conducting stat...

Page 13: ...ent This type of 4 pole connection is known as connection according to Kelvin KC27 Kelvin probes available as accessories allow for easy correct connection 9 1 1 Measurement with Kelvin Probe KC27 9 2 Thermovoltage Compensation Thermovoltages which occur as a result of material and temperature differences may distort measurement results For this reason the instrument is equipped with automatic the...

Page 14: ...cing by means of suitable voltage arrestors 9 4 Milliohm Measurement with 1 A Pulsating Measuring Current mΩ 1 A automatic thermovoltage correction in 3 300 mΩ range Make sure that the device under test is voltage free see chapter 7 1 Interference voltages distort measurement results Set the rotary selector switch to mΩ 1A Connect the device under test as shown KC27 Kelvin probes available as acce...

Page 15: ...cable may distort the measured value Use therefore short or shielded measurement cables The measurement cables may not come into contact with one another during high resistance insulation measurements Set the rotary selector switch to MΩ 50V 100V 250V or 500V depending upon the desired test voltage Connect the DUT as shown on the next page Note Interference voltage The rotary selector switch may o...

Page 16: ...rs at the interference or residual voltage display during measurement This value is slightly less than nominal voltage 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 Note The instrument s rechargeable batteries are rapidly depleted during insulation resistance meas...

Page 17: ...e is stored in accordance with a defined condition see chapter 5 1 and chapter 12 2 1 Memory Mode Operation STORE Menu Function After activating the STORE menu function all measured values are saved in accordance with the selected sampling rate Memory mode operation is ended manually using the same menu function In both cases saved measured values can be read out with the help of DranWin 10 PC sof...

Page 18: ...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 Op...

Page 19: ...ransmits 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 ...

Page 20: ...enus Rechargeable Current Time Current Date Delete Memory Menu see chapter 12 4 Transmission Mode see chapter 12 6 Configure Device Parameters see chapter 12 1 Query Information Memory Occupancy see chapter 12 3 tCal 1508 02 Calibration Date tadJ 1508 02 Balancing Date blinks does not blink EMPtY appears at the display StorE StorE 0FF 0n StArt StOP Memory Mode Menu StArt blinks Activate Memory mod...

Page 21: ... 15 Addr Change Value Set Device Address Acknowledge Address SEt 13 15 21 tiME Change Value Set Time Acknowledge Selection SEt 13 08 02 dAtE Set Date Select Position Change Value Acknowledge Selection Select Position Possible Settings DD MM YY DD day MM month YY year Possible Settings hh mm ss hh hours mm minutes ss seconds Digit blinks Possible Settings see also chapter 12 6 0 15 Set Sampling Rat...

Page 22: ...Reference Conditions Overload Capacity 3 rdg d rdg d 4 30000 3 3000 1 DC AC 6 DC AC 6 Value Time V 3 V 100 μV 2 1 MΩ 2 1 MΩ 50 pF 0 1 10 4 0 2 10 500d 600 V DC AC RMS sine Cont 30 V 1 mV 2 1 MΩ 2 1 MΩ 50 pF 0 1 5 0 2 10 500d 300 V 10 mV 2 1 MΩ 2 1 MΩ 50 pF 0 1 5 0 2 10 500d 600 V 100 mV 2 1 MΩ 2 1 MΩ 50 pF 0 1 5 0 2 10 500d Open circuit voltage Meas current approx rdg d mΩ 1A 4 L 3 mΩ 0 001 mΩ 3 5...

Page 23: ... Sphere of Influence Measured Quantity Measuring Range 1 Influence Error rdg d 10 K Temperature 0 21 C and 25 40 C V DC 0 1 5 VAC 0 5 5 mΩ 1 A 4L 1 5 mΩ 200 mA 4L 1 5 300 Ω 300 kΩ 2L 0 2 5 3 MΩ 2L 0 5 5 30 MΩ 2L 1 5 Insulation 30 MΩ 3 GΩ 2 5 Hz 0 1 5 C RTD 0 5 10 Influencing Quantity Frequency Measured Quantity Measuring Range Influence Error 2 rdg d Frequency VAC 20 Hz 45 Hz 3 V up to 600 0 V 2 1...

Page 24: ...C 61000 4 2 1995 A1 1998 Feature A 8 kV atmospheric discharge 4 kV contact discharge IEC 61000 4 3 1995 A1 1998 Feature B 3 V m Data Interface Data transmission bidirectional optical via infrared light through the housing read data and configure parameters With interface adapter as accessory BD232 IR to RS 232C serial per DIN 19241 cascadable for multi channel operation USB HIT IR to USB 1 1 USB 2...

Page 25: ...echargeable batteries have been excessively depleted the instrument cannot be switched on If this is the case leave the switched on instrument connected to the charger for approximately 30 minutes and then proceed as described above Attention Rechargeable battery or battery leakage must be avoided Resulting damage is not covered by the guarantee Recharging the Rechargeable Batteries Use only the N...

Page 26: ...eries or rechargeable batteries properly i e at a designated collection point 14 4 Device Return and Environmentally Compatible Disposal The DranTech PMIT is a category 9 product monitoring and control instrument in accordance with ElektroG German Electrical and Electronic Device Law This device is not subject to the RoHS directive We identify our electrical and electronic devices as of August 200...

Page 27: ...trument 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 17 Repair and Replacement Parts Service DKD Calibration Lab and Rental Instrument Service If service is required please contact Dranetz BMI 1000 New Durham Road Edison NJ 08818 4019 USA Phone 1 8...

Page 28: ...r 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 a...

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