multimic com 240 AC-DC Current Mini Digital Clamp-On Tester Instruction Manual

multimic com 240 AC-DC Current Mini Digital Clamp-On Tester

Product Information

AC/DC Current Mini Digital Clamp-On Tester (Model 240+)

Thank you for selecting our digital AC/DC current clamp-on tester. This model is a complex instrument that employs a reliable mechanical/electronic design. It is an ultra-compact and highly accurate clamp-on tester that is useful for DCA measurement in
automobile service. The tester conforms to IEC safety requirements and includes features such as a data hold function and over-range indication. It operates on LR-44 batteries and has a battery life of approximately 16 hours.

Features:

• Useful for DCA measurement for automobile service
• Data hold function, especially useful in dark or hard-to-reach areas
• Ultra-compact size and highly accurate AC/DC clamp-on tester
• Conforms to IEC safety requirements

Specifications

• Measuring Method: AC/DC current clamp-on
• Display Range: AC 20A (50/60Hz), AC 200A (50/60Hz), DC 20A, DC 200A
• Ranging Accuracy: See user manual for detailed accuracy specifications
• Jaw Opening Capability: Up to 100mA
• Over Range Indication: Yes
• Auto Power-Off Function: Yes, after approximately 10 minutes of inactivity
• Sampling Time: Approximately 2 times/sec
• Limitation of Circuit Voltage: Less than AC/DC 600V
• Withstanding Voltage: AC 1000V/1 minute between CT core and outer case
• Insulation Resistance: 10M or more between internal circuit and CT core
• Operating Temperature: 0 to +40 degrees Celsius, 80% RH (non-condensing)
• Storage Temperature: -10 to +60 degrees Celsius, 70% RH (non-condensing)
• Power Supply: LR-44(1.5V) batteries (2 included)
• Power Consumption: Approx. 7mW
• Battery Life: Approx. 16 hours (LR-44)
• Size: 44(W) x 148(H) x 20(D)mm
• Weight: Approx. 100g
• Accessories: Batteries (LR-44) x 2, Instruction manual x 1, Soft case x 1

Caution:

• Familiarize yourself with all instructions outlined in the manual before operating the instrument.
• Always check that the function switch is set to the proper position.
• Exercise caution when making measurements as dangerous voltages may be present.
• Use caution when working above 60V DC or 25V AC-rms to avoid electrical shock.
• Never make measurements without the battery cover.
• Keep within the maximum tolerable input.
• Avoid operating the instrument if it becomes wet, damp, or has any liquid condensation build-up.
• Never make measurements on uninsulated conductors or bus bars.

Dimensions and Panel Function:

Refer to the user manual for detailed information on the dimensions and panel function of the clamp-on tester.

Product Usage Instructions

1. Set the power switch to the ON position.
2. Set the AC/DC switch to AC or DC depending on the signal to be measured.
3. Note: In AC current measurement, even if “1” is displayed in the least digit without input, it is not abnormal and does not affect measurement accuracy.
4. Set the range switch to the desired range.
5. Adjust the zero adjustment knob to read zero for DC current measurement.
6. Clamp the conductor of the circuit under test with the current transducer. Note: Clamp around only one conductor in the circuit to be measured.
7. Read the displayed value.
8. After measurement, set the power switch to OFF.

Thank you very much for selecting our digital AC/DC current clamp-on tester.
This model is complex instrument and employ a very reliable mechanical/ electronic design.
Before using your new instrument, read this Instruction Manual completely and familiarize yourself thoroughly with all functions. With proper use and care, your tester will give you years of satisfactory service.

FEATURES

• Useful for DCA measurement for automobile service.
• Data hold function. Especially useful when working in dark or hard to get areas.
• Ultra-compact size and highly accurate AC/DC clamp-on tester.
• Conform to IEC safety requirements.

SPECIFICATION

±2.0%rdg ±5dgt(40～49Hz/61～500Hz)

AC 200A (50/60Hz)| 100mA| ±2.0％rdg±5dgt(2.0~150.0A 50/60Hz)

± 2.5%rdg ± 5dgt(2.0~150.0A 40 ～ 49Hz/61 ～

500Hz)

±3.0%rdg±5dgt(150.1~199.9A 50/60Hz)

±4.0%rdg±5dgt(150.1~199.9A 40～49Hz/61～ 500Hz)

DC 20A| 10mA| ±1.5%rdg ±3dgt
DC 200A| 100mA| ±2.0%rdg ±3dgt (0~150A)

±3.0%rdg ±3dgt (150.1~199.9A)

---|---|---
Jaw opening capability| 30mmφ
Over range indication| “O.L” mark on LCD readout
Auto power-off function| Approx. 10 minutes later, after the power-on.

To power-on again, at first, “off” the power-switch. Wait about 5 seconds and switching to “on” again.

Maximum indication| 1999 count
Low battery indication| “B” mark on LCD readout
Data hold indication| “D･H” mark on LCD readout
Sampling time| Approx. 2 times/sec.
Limitation of circuit voltage| Less than AC/DC 600V
Withstanding voltage| AC 1000V/1 minute between CT core and outer case
Insulation resistance| 10MΩ or more between internal circuit and CT core.
Operating temperature| 0℃ to +40℃, ＜80%RH (non-condensing)
Storage temperature| -10℃ to +60℃, ＜70% RH (non-condensing)
Power supply| LR-44(1.5V)x2
Power consumption| Approx. 7mW
Battery life| Approx. 16 hours (LR-44)
Size| 44(W)x148(H)x20(D)mm
Weight| Approx. 100g
Accessories| Batteries (LR-44)…………… 2

Instruction manual………… 1

Soft case……………………….. 1

CAUTION

• Before operating this instrument, familiarize yourself with all instructions outlined in this manual.
• Always check to make sure that the function switch is set to the proper position.
• When making measure ments, use with CAUTION as dangerous voltages may be present in normally safe areas.
• To avoid electrical shock, use with CAUTION when working above 60V DC or 25V AC rms. Such voltages pose a shock hazard.
• Never make measurements with out the battery cover.
• Never fail to keep the maximum tolerable input.
• Never operate this instrument if it becomes wet, damp or has any liquid condensation build up on any part of the instrument.
• Never make measurements for uninsulated conductors or bus bars.

DIMENSIONS AND PANEL FUNCTION

1. Current transducer(Jaw)
2. Jaw opening lever
3. Range switch
4. Data hold switch
5. LCD display
6. Wrist strap
7. Zero adjustment knob
8. Battery cover
9. AC/DC switch
10. Power switch

METHOD OF MEASUREMENT

1. Set the power switch to “ON” position.

2. Set the AC/DC switch to AC or DC depending upon the signal to be measured.
   Note: In AC current measurement, even if “1” is displayed in the least digit without input, it is not abnormal and no influence for the measurement accuracy.

3. Set the range switch to the desired range.

4. Adjust the zero adjustment knob to read zero for DC current measurement.

5. Clamp the conductor of the circuit under test with current transducer.
   Note: Clamp around only one conductor in the circuit to be measured.

6. Read the displayed value.

7. After measurement, set the power switch to “OFF”.

CAUTION:
This tester is designed for low voltage applications.
To avoid electrical shock or damage, the measurement is limited to the circuit under 600V AC.

REPLACEMENT OF BATTERIES

When the battery becomes exhausted or drops below the operating voltage, the “B” mark is displayed. Turn the power switch to “OFF”, prior to installing batteries. To install the batteries, remove the battery cover located on the unit back. (See Fig.2)
Insert the two LR-44 into the battery case making sure that proper polarity is observed. (See Fig.3)
Always replace both batteries at the same time. If the difference between the voltages of the batteries is big, the measurement error may be caused.

REPAIR SERVICE

When requesting for repair service, please bring the instrument directly to the dealer where you bought.
When mailing the instrument, always pack it in its original or equivalent packing materials to avoid any damage during the transportation and also put together with documents showing your name, address, phone numbers and defect points.

WARRANTY

This instrument is sent out from our factory after the sufficient internal inspections, but if you found any defects due to the fault in our workmanship or the original parts, contact the dealer where you bought the instrument.
The warranty period is 12 months from the date of purchase and the instrument shall be repaired at free of charge, provided that we judge the cause of defect is obviously resulted from our responsibility.

MULTI MEASURING INSTRUMENTS CO.,LTD.

Akihabara Murai Bldg., 7F, 1-26 Kanda Sakuma-cho, Chiyoda-ku, Tokyo,101-0025 Japan
TEL : 81-3-3251-7016
FAX : 81-3-3253-4278
Web Page : http://www.multimic.com/
E-mail : [email protected]

References

• マルチ計測器株式会社 [電流センサ・ CTセンサ・クランプセンサ]

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