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Iso-Tech IPM 138 Instruction Manual

Clamp multimeter
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Instruction Manual
IPM 138
Clamp Multimeter
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Summary of Contents for Iso-Tech IPM 138

  • Page 1 Instruction Manual IPM 138 Clamp Multimeter...

  • Page 2: Safety Information

    Safety Information Read and understand this Instruction Manual completely before using this instrument. Failure to observe the warnings and cautions in this Instruction Manual may result in injury or death, or damage to the instrument and other equipment or property. If this instrument is used in a manner not specified in these instructions, the protection provided by the instrument may be impaired.

  • Page 3: Maintenance

    - If possible, do not work alone, so assistance can be given if required. - Do not expose the instrument to extremes of temperature or high humidity. - If this instrument is used in the vicinity of equipment which generates electro magnetic interference, the display may become unstable or the measurements may be subject to large errors.

  • Page 4: Power On/Off

    Power On/ Off Auto Power Off The Auto Power-off function will turn the instrument off approximately 10 minutes after the last operation. To turn the instrument on again, turn the rotary switch to the off position and then back to the required function. 10min To disable the Auto Power-off function: Turn the instrument off, press and hold the “PEAK”...

  • Page 5: Voltage /Current Measurement

    1. VOLTAGE /CURRENT Measurement 1-1 Voltage testing procedures 1. Plug the Black test lead into the COM terminal and the Red test lead into the V-Ω terminal. 2. Set the rotary switch to the V position. 3. Connect the test leads to the device to be measured. 4.
  • Page 6 1-2 Current testing procedure Note : Do not clamp the jaws around a conductor while the instrument power is on. 1. Press the trigger to open the transformer jaws and clamp around one conductor only. Ensure the jaw is firmly closed around the conductor.

  • Page 7: Button Function

    1-3 Button Function 1-3-1 BLUE BUTTON: Press the Blue button to choose Auto AC or DC, AC, DC, or AC+DC measurement. Auto AC/DC mode (AC or DC flashing): The displayed value will be the AC only RMS value or the DC value, whichever is greater.
  • Page 8 1-3-2 PEAK BUTTON (HZ/THD press for 2 sec): - Auto AC, AC and AC+DC MODE are available for voltage and current measurement. a. PEAK HOLD Normal: Normal Operation. Peak Max : The instrument is activated to save the positive peak value and the negative peak value. The positive peak value is displayed.
  • Page 9 b. HZ/THD (=THD-R) Measurement： - THD-R= RMS of Harmonics ÷ Total RMS of fundamental and Harmonics ×100% (Harmonics up to 25 Overrange display: OL.U : Voltage overload (Vrms > 1000V) OL.A : Current overload (Arms > 620A) EN-9...
  • Page 10 1-3-3 INRUSH BUTTON (Max Min press for 2 sec): a. MAX MIN MODE: - MAX MIN MODE is available for all functions. Normal : Normal Operation. MAX MIN (flashing) : The instrument is activated to save the maximum and minimum value. The present value is displayed.
  • Page 11 b. INRUSH CURRENT : ACA ONLY EN-11...
  • Page 12 1-3-4 DCA ZERO： Remove the Jaws out of the conductor. Press the HOLD BUTTON >2 sec to compensate the residual magnetism. - Auto DC, DC, and AC+DC MODE are available for current measurement. EN-12...

  • Page 13: Resistance Measurement

    2. Resistance Measurement Press the blue button to choose Resistance measurement, Continuity check or Diode test mode. Resistance measurement Continuity check EN-13...
  • Page 14 Diode testing EN-14...
  • Page 15 3. Active power (W)/Power factor (PF) Measurement 3-1 Single Phase Power Measurement 1. Plug the Black test lead into the COM terminal and the Red test lead into the V-Ω terminal. 2. Set the rotary switch to the PF W~ position. 3.
  • Page 16 Underrange display : 0.000 kW : Vrms <0.5V or Arms <0.5A PF - - - - : Vrms <0.5V or Arms <0.5A Overrange display: OL.U : Voltage overload ( Vrms > 1000V) OL.A : Current overload (Arms > 620A) OL.UA : Both Voltage and current overload. ±OL kW : Active Power >...
  • Page 17 b. 3- phase 4 wire balanced / unbalanced Set the rotary switch to the PF W~ position W=W1+W2+W3 Black Black Black EN-17...

  • Page 18: Phase Rotation

    4. Phase Rotation Line1 Line2 Line3 NOTE : - Connect the three phases of the power source as shown above. - The test is only possible while the system frequency is stable. 1. Plug the Black test lead into the COM terminal and the Red test lead into the V-Ω...
  • Page 19 a. If it displays " 1.2.3 ", then the phase sequence is a forward sequence, which means the supposed phase 1 is ahead of the supposed phase 2. b. If it displays " 3.2.1 ", then the phase sequence is reversed sequence, which means the supposed phase 2 is ahead of the supposed phase 1.
  • Page 20 6. OTHER BUTTON FUNCTION 6-1 YELLOW BUTTON 6-1-1 DISPLAY BACKLIGHT Press the yellow LIGHT BUTTON, to turn the backlight on. Press the button again to turn the backlight off otherwise the backlight will automatically turn off after approx. 30 sec. 6-1-2 BATTERY VOLTAGE CHECK Press the yellow LIGHT BUTTON >...

  • Page 21: Power-Up Options

    6-2 HOLD BUTTON Press the HOLD BUTTON to freeze the displayed value. Press it again to unfreeze the display and return to normal operation. 7. Buzzer The Instrument beeps once for every valid button-press, and beeps twice for every invalid button-press. 8.

  • Page 22: Battery Replacement

    Battery Replacement When the low battery indicator "" appears on the LCD, replace the battery with the type given in the specifications. WARNING Disconnect the test leads from the circuit and the instrument before removing the battery cover. Refer to the following figure to replace the battery : EN-22...

  • Page 23: General Specifications

    Specifications 1-1 General Specifications LCD display digits : 3 5/6 digit large scale LCD readout. Display count : 6000 counts. Measuring rate : 3 times / sec. Overrange display : "OL" or "-OL" . Automatic power off time : Approximately 10 minutes after power on.

  • Page 24: Electrical Specifications

    Shock and vibration: Sinusoidal vibration per MIL-T-28800E (5 ~ 55 Hz, 3g maximum). Drop Protection: 4 feet drop onto hardwood or concrete floor. 1-3 Electrical Specifications Accuracy is ±(% reading + number of digits) at 23°C ± 5°C < 80%RH. Temperature coefficient : 0.2 x (Specified accuracy) / °C, <...
  • Page 25 Overload protection : 1000Vrms/600Arms Accuracy defined for : Sine wave, ACV>5Vrms / ACA≧5Arms, Freq.50~400Hz. - Only suitable for repetitive signals. Frequency : Hz Range Accuracy 20.0 ~ 399.9 Hz ±(0.1% + 5 dgt) 400 ~ 4000 Hz Overload protection : 1000Vrms/600Arms Sensitivity : 5Vrms for ACV, 5Arms for ACA ( >400Hz Unspecified) - The reading will be 0.0 for signals below 10.0 Hz.
  • Page 26 - The reading of Active Power may fluctuate due to small changes in current when measured using the 4.000 kW range. Power Factor: PF = Watt ÷ (V×A) Function Range Accuracy ±3° -1.00 ~ 0.00 ~1.00 Overload protection : 1000Vrms/600Arms Resistance, Continuity &...

  • Page 27: Limited Warranty

    Limited Warranty This instrument is warranted to the original purchaser against defects in material and workmanship for 3 years from the date of purchase. During this warranty period, RS Components will, at its option, replace or repair the defective unit, subject to verification of the defect or malfunction.
  • Page 28 Asia Iso-Tech 460 Alexandra Road, #15-01A PSA Building Singapore 119963 7410 Pebble Drive Fort Worth Texas 76118-6961 Europe Iso-Tech PO Box 99 Corby Northamptonshire NN17 9RS United Kingdom Canada 1701 Woodward Drive Ste 108 Ottawa Ontario K2C 0R4, Canada Japan...

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