MULTI MEASURING INSTRUMENTS 240+ Manuale utente

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.

1. 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.

2. SPECIFICATION

Measuring method

Dual integration mode

Display

3.5 digit LCD

Range

AC/DC 20A/200A (AC 50/60Hz)

Ranging

Manual ranging

Accuracy

AC 50/60Hz or DC, 23℃±5℃, 80% RH max.

Range

Mini. Resolution

Accuracy

AC 20A (50/60Hz)

10mA

±1.5%rdg ±5dgt(50/60Hz)

±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

AC/DC CURRENT

MINI DIGITAL CLAMP-ON TESTER

MODEL 240 +

INSTRUCTION MANUAL

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

10MΩor 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

3. 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 measurements, 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 without 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.

4. DIMENSIONS AND PANEL FUNCTION

①Current transducer(Jaw) ⑦Zero adjustment knob

②Jaw opening lever ⑧Battery cover

③Range switch ⑨AC/DC switch

④Data hold switch ⑩Power switch

⑤LCD display

⑥Wrist strap

5. METHOD OF MEASUREMENT

①Set the power switch to “ON” position.

②Set 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.

③Set the range switch to the desired range.

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

⑤Clamp the conductor of the circuit under test with current transducer.

Note: Clamp around only one conductor in the circuit to be measured.

⑥Read the displayed value.

⑦After 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.

6. 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.

Pull up Place batteries with positive side up

Fig.2 Fig.3

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]

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