MULTI MEASURING INSTRUMENTS M-2100 Manual de usuario

AC CURRENT

DIGITAL CLAMP-ON TESTER

MODEL M-2100

INSTRUCTION MANUAL

Thank you very much for selecting our digital AC clamp-on

Tester M-2100.

This model is complex instrument and employ a very reliable

mechanical/electronic design.

Before you use your new instrument, read this Instruction

Manual completely and familiarize yourself thoroughly with

all functions.

Keep this manual carefully to take out whenever you need.

MULTI MEASURING INSTRUMENTS CO.,LTD.

Akihabara Murai Bldg. 7F, 1-26 Kanda Sakuma-cho,

Chiyoda-ku, Tokyo, Japan, 101-0025

TEL : +81-3-3251-7016 FAX : +81-3-3253-4278

Home Page : http://www.mutimic.com/

E-mail : multi@multimic.com

1. FEATURES

●Multi functional clamp-on tester.

●Additional AC/DC voltage, resistance, diode test and continuity check.

●Data hold and auto power off function.

2. △

!WARNING

●Do not make measurements of power lines carrying more than 250V.

IN SOME CASES, POWER LINES MAY CARRY VOLTAGE SPIKES OF

SEVERAL TIMES OF THE NORMAL SUPPLY VOLTAGE. THIS

INSTRUMENT SHOULD NOT BE USED TO MEASURE POWER LINES.

*The term of “POWER LINE”means the electrical circuit providing the power to

factories, buildings, and etc.

●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 CAUTION as dangerous voltages may be

present in normally safe areas.

●To avoid electrical shock, use CAUTION when working above 60V DC or 25V AC

rms.

Such voltages pose a shock hazard.

●Never make measurements with the case opened.

●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.

2. SPECIFICATIONS

Safety standard : Meets the requirements for double insulation to IEC 1010-2-032,

IEC 61010-1, IEC 61010-2-032 installation Category Ⅲ600V

phase to earth.

E.M.C. standard : The instrument meets EN 61326-1/-2-2 and EN 61000-4-2/-3

Withstanding voltage : AC 5500V, 1 minute (between outer case and core of CT)

Measuring method : Dual integration mode

Jaw opening capability : 55mmφ

Display : 3 1/2 digit LCD max. reading of 1999 and annunciators

Over range indication : Blanking of all digits except MSD1

Low battery indication : "B" mark on LCD readout

Sampling : 2 times/s

Data hold indication : "D･H" mark on LCD readout

Auto power off : The meter is set to power off mode approx. 10 minutes after the

power switch on.

Operating temperature : 0℃to 40℃, ＜80%RH (non-condensing)

Strange temperature :‐10℃to 60℃, ＜70%RH (non-condensing)

Power supply : 1.5V (“AAA”size, R03) x2

Power consumption and battery life : Approx. 5mW, 500 hours continuous.

Size : 85(W)x240(H)x34(D)mm

Weight : Approx. 350g

Accessories : Carrying case…………..1

Instruction manual……1

Batteries…………………2

Test lead…………………1set

Measuring range (23℃±5℃, ＜80% RH ) :

Range

Accuracy

Max. input

(50/60Hz)

Manual range

20A

±1.2% rdg±10 dgt

AC2000A

200A

〃

2000A

±1.2% rdg±8 dgt

(50/60Hz)

…V

Auto range

±0.7% rdg±5 dgt

AC/DC

750V rms

20V

±1.2% rdg±5 dgt

200V

〃

750V

〃

(OHM)

Auto range

200Ω

±1.2% rdg±5 dgt

Input protection

2KΩ

〃

250V rms

20KΩ

〃

200KΩ

〃

2000KΩ

〃

20MΩ

±3% rdg±10 dgt

･)))Continuity

check

2KΩ

Continuity beeper

＜Approx. 300Ω

250V rms

Diode test

±10% rdg±3 dgt

250V rms

3. DIMENSIONS AND PANEL FUNCTION

①Current transducer(Jaw)

②Jaw opening lever

③Power switch

④Range selector switch

⑤Data hold switch

⑥LCD display

⑦Input terminal(V)

⑧COM terminal

⑨Input terminal(Ω)( ｜)

⑩Battery cover

○

11 Wrist strap

4. METHOD OF MEASUREMENT

4-1. Measurement of AC Line Current (～A)

①Press the power switch "ON".

②Set the range selector switch to the proper

ACA range to be measured.

Start the measurement at top range and

then work down to lower range.

③Open the CT and clamp it to the conductor

to be measured at the center of CT.

Close CT completely.

④Read the current value on the display.

⑤If you make measurements in a dark place

or in a place where it is difficult to see the

readings, use the data hold switch. Fig.1

Note : Clamp around only one conductor of the circuit to be measured. (See Fig.1)

When making the clamp measurements for high AC current, the noise sound

of CT may be caused, however, this is not abnormal.

△

!WARNING

●To avoid electrical shock or damage, the measurement is limited to the circuit

under 600V AC.

Such voltages pose a shock hazard.

●Never fail to keep the maximum 600A input to avoid electrical shock or damage.

●Never make measurements for uninsulated conductors or bus bars.

4-2. Measurement of Voltage

4-2-1. Measurement of AC Voltage

①Set the power switch to "ON" position.

②Connect the plug of red test lead into

the “V”terminal and the plug of black

test lead into the “COM”terminal.

③Set the range selector switch to “ACV~”

range.

④Contact the tips of the test leads to the

circuit under test.

⑤Read the voltage value in the display.

4-2-2. Measurement of DC Voltage

①Set the power switch to "ON" position.

②Connect the plug of red test lead into the “V”terminal and the plug of black test

lead into the “COM”terminal.

③Set the range selector switch to “DCV …” range.

④Contact the tips of the test leads to the circuit under test.

⑤Read the voltage value in the display.

△

!WARNING

Do not make measurements of power lines carrying more than 250V.

IN SOME CASES, POWER LINES MAY CARRY VOLTAGE SPIKES OF

SEVERAL TIMES OF THE NORMAL SUPPLY VOLTAGE. THIS

INSTRUMENT SHOULD NOT BE USED TO MEASURE POWER LINES.

* The term of “POWER LINE”means the electrical circuit providing the

power to factories, buildings, and etc.

△

!WARNING

POSSIBLE ELECTRICAL SHOCK. Do not make measurements if the case

is damaged or the rear case is removed. Remove all electrical inputs before

removing the rear case.

△

!WARNING

POSSIBLE ELECTRICAL SHOCK or FIRE HAZARD. Do not expose this

tester to rain or moisture. Do not operate the tester in the presence of

flammable gases or fumes.

△

!CAUTION

To avoid damage to the tester, disconnect test leads before changing

functions. Do not exceed the maximum input limits.

4-3. Measurement of Resistance and Continuity Check

①Set the power switch to "ON" position.

②Connect the plug of red test lead into

the “Ω”terminal and the plug of black

test lead into the “COM”terminal.

③Set the range selector switch to “Ω”or

“･)))2K Ω”range.

④Contact the tips of the teat leads to the

circuit under test.

⑤Read the resistance value in the display.

In continuity check, if the circuit under test has a resistance of less than

approximately 300Ω, the continuity beeper will sound.

△

!CAUTION

Be sure all voltage is turned OFF in the circuit before making resistance

measurement.

4-4. Measurement of Diode

①Set the power switch to "ON" position.

②Connect the plug of red test lead into the “｜”terminal and the plug of black

test lead into the “COM”terminal.

③Set the range selector switch to “｜”range.

④Contact the tips of the test leads to the diode under test.

(a)Forward voltage (b)Reverse voltage

measurement measurement

Black Red Red Black

Fig. 4

As shown in Fig.4 (a), when measuring the forward voltage across the diode, a

normal diode will indicate 0.4 to 0.7V and, as shown in Fig.4 (b) the reverse voltage

will indicate a value near 1.500. For a short-circuited diode, a value near 0mV will be

displayed.

△

!CAUTION

Be sure all voltage is turned OFF in the circuit before making diode test.

5. REPLACEMENT OF BATTERIES AND

When the battery voltage falls below a specified voltage value, the "B" mark will

appear in the display. If this occurs, replace the two batteries with new ones as

quickly as possible.

Turn the power switch to "OFF", prior

to installing batteries.

To install the batteries, remove the

battery cover located on the unit back.

Loosen the screw on the battery cover.

Replace the two batteries (UM-4 or

type AAA) with new ones, observing

polarity. Use high-quality batteries

which are guaranteed against leakage. OPEN

If the instrument is to be left unused

for long periods of time, to prevent

damage from leakage, remove the batteries. Battery Cover

△

!WARNING

Before changing batteries or fuse, removal all electrical input.

6. REPAIR SERVICE

When making requests for repair service, please bring the instrument directly to the

dealer. If this is impossible, however, send the instrument directly to our sales office.

When mailing this instrument, always pack it in its original or equivalent packing

material and pack together with name, address, telephone number and the warranty

documentation.

●To ensure speedy and reliable repair, always include information as the type of

failure and cause.

●If required, always return accessories with the instrument.

●When contacting us, provide the model number and serial number of your

instrument.

7. WARRANTY

This instrument is sent out from our factory after the sufficient internal inspections

but if you find any defect due to the fault in our workmanship or the original parts,

please 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.

GURANTEE REGULATIONS

1.This instrument is warranted for the operation under normal use for 12 months from

the date of purchase.

2.This warranty does not cover the following defects:

a. Defect caused from the improper use and operation.

b. Defect caused from the use, operation and storage beyond the original

specifications, designs and conditions.

c. Defect caused from the renovations or repairs done by someone else than us or our

representatives.

d. Defect not caused from our responsibilities.

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