Kyoritsu Electrical Instruments KM2012RA User manual

DIGITAL MULTIMETER

WITH

AC/DC CLAMP SENSOR

KEW MATE 2012RA

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1．SAFETY WARNINGS

This instrument has been designed and tested according to
IEC Publication 61010: Safety Requirements for Electronic
Measuring Apparatus. This instruction manual contains warnings
and safety rules which must be observed by the user to ensure
safe operation of the instrument and to retain it in safe condition.
Therefore, read through these operating instructions before
starting using the instrument.

● Read through and understand instructions contained in this

manual before starting using the instrument.

● Save and keep the manual handy to enable quick reference

whenever necessary.

● Be sure to use the instrument only in its intended applications

and to follow measurement procedures described in the
manual.

● Be sure to understand and follow all safety instructions

contained in the manual.

Failure to follow the above instructions may cause injury, damage
to the instrument and/or damage to equipment under test.

The symbol # indicated on the instrument means that the user
must refer to related parts of the manual for safe operation of
the instrument. Be sure to carefully read the instructions following
each # symbol in this manual.

DANGER：is reserved for conditions and actions that are

#

WARNING：is reserved for conditions and actions that can

#

CAUTION：is reserved for conditions and actions that can

#

Following symbols are used on the instrument and in the
instruction manual. Attention should be paid to each symbol to
ensure your safety.

#






likely to cause serious or fatal injury.

cause minor injury or instrument damage.

Refer to the instructions in the manual.
This symbol is marked where the user must refer to the
instruction manual so as not to cause personal injury or
instrument damage.

Indicates an instrument with double or reinforced insulation.
Indicates that this instrument can clamp on bare conductors

when measuring a voltage corresponding to the applicable
Measurement category, which is marked next to this symbol.

Indicates AC (Alternating Current)．

Indicates DC (Direct Current).

# WARNING

cause serious or fatal injury.

This instrument satisfies the marking requirement defined
in the WEEE Directive. This symbol indicates separate
collection for electrical and electronic equipment.

This marking means they shall be sorted out and collected
as ordained in DIRECTIVE.
This directive is valid only in the EU. When you remove
batteries from this product and dispose them, discard them
in accordance with domestic law concerning disposal. Take
a right action on waste batteries, because the collection
system in the EU on waste batteries are regulated.

WARNING

●Measurement Category(CAT)
  The restrictions on the maximum voltage level for which

the this product can be used, depend on the measurement
categories specified by the safety standards.

  Do not apply any input level higher than maximum allowable

input.

 AC/DC 600V CAT II    AC/DC300V CAT III

Appliances, portable equipment, ect. For measurements

CAT II

performed on circuits directly connected to the low
voltage installation.

Distribution board, circuit breaker, ect. For

CAT III

measurements performed in the building installation.

● Never make measurement on circuits with a maximum voltage

difference of 600V or greater between conductors (300V or
greater between a conductor and ground).

● Do not attempt to make measurement in the presence of

flammable gasses.

  Otherwise, the use of the instrument may cause sparking,

which leads to an explosion.

● Never attempt to use the instrument if its surface or your hand

is wet.

● Do not exceed the maximum allowable input of measuring

ranges.

● Never open the battery compartment cover while making

measurement.

● Never try to make measurement if any abnormal conditions,

such as broken Clamp Sensor or case is noted.

● The instrument is to be used only in its intended applications or

conditions.

  Otherwise, safety functions equipped with the instrument

doesnt work, and instrument damage or serious personal
injury may be caused.

#

DANGER

#

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WARNING

● Never attempt to make any measurement, if any abnormal

#

conditions are noted, such as broken case, cracked test leads
or Clamp Sensor Cable and exposed metal parts or internal
wiring.

● Do not turn the Function Selector Switch while the test leads

are connected to the circuit under test.

● Do not install substitute parts or make any modification to

the instrument. Return the instrument to Kyoritsu or your
distributor for repair or re-calibration.

● Do not try to replace the batteries if the surface of the

instrument is wet.

● Always disconnect the clamp sensor and the test leads

from the circuit under test and switch off the instrument
before opening the battery compartment cover for battery
replacement.

● A cap is provided on the tip of a test lead. Use a test lead with

the cap on for safety.

● Stop using the test lead if the outer jacket is damaged and the

inner metal or color jacket is exposed.

CAUTION

● Make sure that the Function Selector Switch is set to an

#

appropriate position before making measurement.

● Always make sure to place the test leads in the holster before

making current measurement.

● Do not expose the instrument to the direct sun, extreme

temperatures or dew fall.

● This instrument isn't dust & water proofed. Keep away from

dust and water.

● Be sure to set the Function Selector Switch to the "OFF"

position after use. When the instrument will not be used for
a long period of time, place it in storage after removing the
batteries.

● Use a damp cloth and detergent for cleaning the instrument.

Do not use abrasives or solvents.

● Keep your fingers and hands behind the protective fingerguard

during measurement.

2．FEATURES

● Permits AC/DC current measurement up to 120A using a

clamp sensor that comes standard with the instrument

● Clamp sensor for ease of use in crowded cable areas and

other tight places

●

Permits current measurement with an open current-clamp sensor
that does not require opening and closing operations by the user

●True-RMS measurements ACV and ACA.

●Auto-power-save function

●Buzzer for easy continuity checking

●Data hold function to freeze the readings

●LCD with a bar graph

●Shock absorbing holster for ease of storage

●

Designed to international safety standard IEC61010-1: over-voltage
category CAT III 300V, CAT II 600V and pollution degree 2.

[ Effective Value (RMS) ]
  Most alternating currents and voltages are expressed in

effective values, which are also referred to as RMS (Root-Mean­Square) values.

  The effective value is the square root of the average of square

of alternating current or voltage values. Many clamp meters
using a conventional rectifying circuit have "RMS" scales for AC
measurement. The scales are, however, actually calibrated in
terms of the effective value of a sine wave though the clamp
meter is responding to the average value. The calibration is
done with a conversion factor of 1.111 for sine wave, which
is found by dividing the effective value by the average value.
These instruments are therefore in error if the input voltage or
current has some other shape than sine wave.

[ CF (Crest Factor) ]
  CF (Crest Factor) is found by dividing the peak value by the

effective value.

Examples: Sine wave: CF=1.414
 Square wave with a 1: 9 duty ratio: CF=3

Average value

f

T

D=f/T

Effective value

Vrms

1

A

2

≒0.707

A A

1

A

3

A

D

Waveform

A
0

A
0

A
0

A

0

Conversion

factor

Vavg

Vrms/ Vavg

2

A

π

≒0.637 ≒1.111

0.5A

≒1.155

f

A ＝A・D

T

DA

AD

π

22

1

2
3

1

＝

D

（1.111　　-1）

Reading errors for

average sensing

A×1,111-A

0.5A×1.111-

instrument

0％

A

＝11.1％

A

3
A
3

＝-3.8％

D

×100％

×100

×100

Crest factor

≒1.414

≒1.732

CF

2

1

3

1

A

＝

D

DA

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3．SPECIFICATIONS

● Measuring Ranges and Accuracy (at 23 ℃ ±5 ℃ , relative

humidity75% or less)

AC Current  A (RMS value detection) Maximum Input Current : 120A

Range Display range Allowable input Accuracy

60A 0.00～60.39A

120A 0.0～603.9A

※ For non-sinusoidal waveforms, add ±(2% of reading + 2% of

full scale), for Crest factor<2.5.

DC Current  A Maximum Input Current : 120A

Range Display range Allowable input Accuracy

60A ±0.00～60.39A ±0.00～60.00A ±2.0%rdg±8dgt

120A ±0.0～603.9A ±0.0～120.0A ±2.0%rdg±5dgt

AC Voltage  V (RMS value detection, Auto-range) Maximum Input Voltage : 600V

Range Display range Allowable input Accuracy

6V 0.000～6.039V

60V 5.60～60.39V

600V 56.0～603.9V

※Input Impedance：approx. 10MΩ <200pF
※ For non-sinusoidal waveforms, add ±(2% of reading + 2% of

full scale), for Crest factor<2.5.

DC Voltage  V (Auto-range) Maximum Input Voltage : 600V

Range Display range Allowable input Accuracy

600mV ±0.0～603.9mV

6V ±0.560～6.039V

60V ±5.60～60.39V

600V ±56.0～603.9V

※Input Impedance：approx. 10MΩ

0.00～60.00Arms
(85Apeak or less)

0.0～120.0Arms

(170Apeak or less)

0.300～600.0Vrms
(850Vpeak or less)

±0.0m～600.0V ±1.0%rdg±3dgt

±2.0%rdg±5dgt

(45～65Hz)

（sine wave）

±1.5%rdg±5dgt

(45～400Hz)

（sine wave）

Resistance Ω (Auto-range)

Range Display range Allowable input Accuracy

600Ω 0.0～603.9Ω

6kΩ 0.560～6.039kΩ

60kΩ 5.60～60.39kΩ

600kΩ 56.0～603.9kΩ

0.560～6.039MΩ

6MΩ

60MΩ 5.60～60.39MΩ ±3.0%rdg±5dgt

※ Open-loop Voltage：approx.0.6V, Measuring Current : 0.3mA or

less

Continuity

Range Display range Allowable input Accuracy

600Ω 0.0～603.9Ω 0.0～600.0Ω ±1.0%rdg±5dgt

※The buzzer turns on for resistances lower than 35±25Ω.
※ Open-loop Voltage：approx.0.6V, Measuring Current : 0.3mA

or less

Diode



Range Display range Allowable input Accuracy

2V 0.000～1.999V 0.000～1.999V ±3.0%rdg±5dgt

※Open-loop Voltage：approx.2.7V

Capacitor

Range Display range Allowable input Accuracy

40nF 0.00～40.39nF the accuracy is not guaranteed

400nF 36.0～403.9nF

40μF 3.60～40.39μF

400μF 36.0～403.9μF

4000μF 360～4039μF

(Auto-range)

0.0Ω～60.00MΩ

40.0n～40.00μF

the accuracy is not guaranteed

±1.0%rdg±5dgt

±2.0%rdg±5dgt

±2.5%rdg±10dgt4μF 0.360～4.039μF

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Frequency Hz ( AC Current ) (Auto-range)

Range Display range Allowable input Accuracy

10Hz 0.000～9.999Hz The accuracy is not guaranteed

100Hz 9.00～99.99Hz

1000Hz

10kHz 0.900～9.999kHz

100kHz 9.00～99.99kHz

1000kHz 90.0～999.9kHz

10MHz 0.900～9.999MHz

※Input Current：more than 6A

Frequency Hz ( AC Voltage ) (Auto-range)

Range Display range Allowable input Accuracy

100Hz 9.00～99.99Hz

1000Hz 90.0～999.9Hz

10kHz 0.900～9.999kHz

100kHz 9.00～99.99kHz

300kHz 90.0～300.0kHz

1000kHz 300.1～999.9kHz

10MHz 0.900～9.999MHz

※ Input Voltage：more than 6V (～10kHz) , more than 20V (10k

※Input Impedance：approx. 900kΩ

Note:◇ The symbol of "―" in the above table means that the

90.0～400.0Hz ±0.1％rdg±1dgt

400.1～999.9Hz

10Hz 0.000～9.999Hz The accuracy is not guaranteed

300kHz)

～

instrument only displays the value, but the accuracy, the
proper operation and the safety are not guaranteed.

9.00Hz～400.0Hz

The accuracy is not guaranteed

9.00Hz～300.0kHz

The accuracy is not guaranteed

±0.2％rdg±2dgt

±0.2％rdg±2dgt

±0.1％rdg±1dgt

●Safety Standard
 CAT III 300V, pollution degree 2
 CAT II 600V, pollution degree 2
IEC 61010-031
EN 61326-1 (EMC)
EN 50581 (RoHS)

●Operating System ΔΣ modulation

●Display Liquid crystal display

Maximum Reading:6039
Except Hz : 9999, CAP : 4039,
Diode : 1999
Bar graph with maximum points of 30.

●Display approx. 3 times per second
 Indication renewal

●Location for use

●

Operating Temperature 0 ~ +40℃ , relative humidity 85% or less

 and Humidity Range (without condensation)

●Storage Temperature
 and Humidity Range (without condensation)

●Source Two 1.5VDC R03 (UM-4) batteries

●Current Consumption app rox. 3mA (DC V) , approx . 13m A

●Power-save Function Shifts to the power-save state about

●Low battery warning 

●Overload Protection AC voltage / DC voltage / Frequency

DC / ACrms 720V for 10 seconds
AC current / DC current ranges :
 DC / ACrms 150A for 10 seconds
Resistance / Continuity / Diode /

 DC / ACrms 600V for 10 seconds

●Withstand Voltage AC3470Vrms for 5 seconds between

●Insulation Resistance 100MΩ or greater at 1000V

between electrical circuit and housing

●Conductor Size Approx. φ12mm diameter max

●Dimensions 128(L)×92(W)×27(D)mm

●Weight Approx. 220g

●Accessories Two R03 (UM-4) batteries

Instruction Manual

IEC 61010-1, 61010-2-032, 61010-2-033

Indoor use, 2000m max, above sealevel

-20 ~ +60℃ , relative humidity 85% or less

(ACA)

15 minutes after the last switch
operation.

Appears when the batteries

become low (2.4±0.15V or less)

ranges :

Capacitor ranges :

electrical circuit and housing case

case

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4．INSTRUMENT LAYOUT

Capacitor

Clamp Sensor

Holster

LCD Display

Test Lead

Test Lead Cap：Test leads can be used under the CAT.II and III

environments by attaching a Protective cap as illustrated
below. Use of our Protective cap offers different lengths
suitable for the test environments.

Protective Cap

Exposed metal part

Test Lead Cap

）（

Unit

Protective fingerguard

default setting

Resistance

････

60A,120A

Resistance

Diode

Continuity

AC

････

Bar Graph

AC

DC

Barrier

A Zero
Adjust Button

Clamp Sensor
Cable

Battery Voltage
Warning

Diode Test

Continuity
Buzzer

Zero ADJ

Clamp Sensor：Pick up current flowing through the conductor.
Barrier (Protective figerguard)：It is a part providing protection

against electrical shock and ensuring the minimum required air
and creepage distances.

A Zero Adjust Button：Used for zero adjustment on DCA. Also used

to reset the display resding.
Data Hold Button：Freezes the display reading.
Function Selector Switch：Selects function. Also used to power the

instrument on.
Range Selector Button：Selects measuring mode. When the

Ω range the defaults to the Resistance. Then, press this

switch to cycle through Resistance → Diode → Cotinuity →

Capacitor → Resistance. When the 60A, 120A range the

defaults to the AC. Then, press this switch to cycle through AC

→ DC → AC.

Data Hold
Button

Button

Function Selector Switch

AC / DC

Range Selector
Button

Button

（

）

Data Hold

Uncapped condition for CAT.II environment

● The Cap should be firmly attached to the Probes.

#

Capped condition for CAT.III environments

CAUTION

5．PREPARATIONS FOR MEASUREMENT

（1）Checking battery voltage

   Set the Function Selector Switch to any position other than

the OFF position. If the marks on the display is clearly legible
without symbol "
If the display blanks or "
batteries according to section 8: Battery Replacement.

● When the instrument is left powered on, the auto-power-save

function automatically shut the power off; The display blanks
even if the Function Selector Switch is set to a position other
than the OFF position in this state.

  To power on the instrument, turn the Function Selector Switch

or press any Button. If the display still blanks, the batteries are
exhausted.

Replace the batteries.

（2） Make sure that the Function Selector Switch is set to the

appropriate range.

   Also make sure that data hold function is not enabled. If

inappropriate range is selected, desired measurement
cannot be made.

（3） Permits the measurement by placing the

one test lead in the holster while confirming
the measurement value.

● Verify proper operation on a known source before use or taking

action as a result of the indication of the instrument.

" showing, battery voltage is OK.

" is indicated, replace the

NOTE

WARNING

#

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6．HOW TO MAKE MEASUREMENT

6-1 Current Measurement

DANGER

● In order to avoid possible shock hazard, never make

measurement on circuits with a maximum voltage difference
of 600V or greater between conductors (300V or greater
between a conductor and ground).

● Do not make measurement with the test leads connected to

the circuit under test.

● Never make measurement with the battery compartment cover

removed.

● Keep your fingers and hands behind the barrier during

measurement.

● To avoid electrical shock by touching the equipment under test

or its surroundings, be sure to wear insulated protective gear.

● When handling the clamp sensor, exercise caution not to apply

excessive shocks or vibration to the sensor.

●Maximum measurable conductor size is 12mm in diameter.

Note: ◇ Make sure that the test leads are in the holster while

making current measurement.

   ◇

Instrument can show the value over 120A, but the safe and
proper measurement range is limited lower than 120A.

Correct

6-1-1 DC Current Measurement

(1) The Function Selector Switch to the "60A" or "120A" position.
("AC" marks are shown on the top of the display.)
(2) Press the
(3) Press the A ZERO ADJ Button to set the reading of the

instrument to zero.
(Incorrect zero adjustment makes measurement errors.)
(4) Adjust one of the conductors to the center of the clamp

sensor's arrow.
( When the position of the conductor is not at the center of

the arrow, the error occurs.)
Measured value is shown on the display.

#

CAUTION

#

Conductor

Incorrect

SEL

Button. " " mark is shown on the display.

Adjust a
conductor to
the center of
the arrow.

Note:◇ The direction of current is plus(+) when the current

flows from the upside (A ZERO ADJ. Button side) to the
underside The direction is minus(-) when the current flows
from the underside to the upside.

   ◇ Minus "-" mark is shown at the left side of the value and

the bar graph while making minus current measurement.

   ◇ By changing the function switch 60A or 120A to the other

position, the AC/DC mode is reset to the default (AC
mode). To set the DC mode, press the

   ◇ The zero adjustment is effective only for the current

measurement.

   ◇ After the zero adjustment the instrument operates as

follows.

(1) The bar graph disappears.
    (2) The maximum counts is changed according to the

      (ex.)

(3) △mark is shown on the display.
    (4)

   ◇ Pressing the A ZERO ADJ button over 2 sec releases the

6-1-2 AC Current Measurement

(1) Set the Function Selector Switch to "60A." or "120A".
  ("
(2) Adjust one of the conductors to the center of the clamp

( When the position of the conductor is not at the center of

Measured value is shown on the display.

Note:◇ Unlike DC current measurement, zero adjustment is not

adjusted value.

The maximum count is 6039-100=5939, when
adjusted +100 counts to zero.

Pressing A ZERO ADJ. Button again or
changing the function switch releases zero adjustment
function when the zero adjustment is effective.

zero adjustment function.

" mark is shown on the top of the LCD.)

sensor's arrow.

the arrow, the error occurs.)

necessary. There is not polarity indication either.

SEL

Button again.

SEL

Button,

6-2 Voltage Measurement

DANGER

● In order to avoid possible shock hazard, never make

measurement on circuits with a maximum voltage difference
of 600V or greater between conductors (300V or greater
between a conductor and ground).

● Do not make measurement with the battery compartment

cover removed.

● Keep your fingers and hands behind the barrier during

measurement.

#

or

Note:◇ Make sure that the clamp sensor is in the holster while

making voltage measurement.

   ◇ I

nstrument may show the value over 600V, but the safe

and proper measurement range is limited lower than 600V.

6-2-1 DC Voltage Measurement

(1) Set the Function Selector Switch to "

" mark is shown on the LCD.)

("
(2) Short-circuit the tips of test leads to make the indication zero.
(3) Connect the red test lead to the positive (+) side of the circuit

under test and the black test lead to the negative (-) side.
Measured voltage value is shown on the display.

  When the connection is reversed, "-" is shown on the display.

6-2-2 AC Voltage Measurement

(1) Set the Function Selector Switch to "
("

" mark is shown on the LCD.）

(2) Connect the test leads to the circuit under test.
Measured voltage value is shown on the display.

Note:◇ The displayed value might be few digits instead of zero

even if shorting the test leads.

".

".

6-3 Resistance Measurement

DANGER

●Never make measurement on circuits that are live.

● Never make measurement with the battery compartment cover

removed.

● Keep your fingers and hands behind the protective fingerguard

during measurement.

(1) Set the Function Selector Switch to "
(2) Press the

is not shown on the display (Resistance Measurement).

Immediately after setting the Function Selector Switch to

"

(3) Check that the display shows "

check that the display reads about zero.

(4) Connect the test leads to the circuit under test. Measured

resistance value is shown on the display.

Note:◇

When the test leads are shorted, the display may read a small
resistance value. This is the resistance of the test leads.

   ◇ If there is an open in either of the test leads, " " is

shown on the display.

   ◇ The capacitive factor of the tested circuit may cause the

fluctuation of the measurement value, while making the
resistance measurement of high value .

   ◇ Make sure that the clamp sensor is in the holster while

making resistance measurement.

#

SEL

Button and "Ω" mark is shown and " " mark

", is not necessary to operate the

". Short the test leads and

".

SEL

Button.

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6-4 Diode Measurement

Forward-bias Diode Test

Reverse-bias Diode Test

(1) Set the Function Selector Switch to "
(2) Press the
(3) Connect the test leads to the circuit under test.
The measured value appears on the display.

[ Forward-bias Diode Test ]
Connect the red test lead to the anode and the black test

[ Reverse-bias Diode Test ]
Connect the red test lead to the cathode and the black test

Black Red

Note:◇ Hold the clamp sensor in the holster, while making the

6-5 Continuity Measurement

(1) Set the Function Selector Switch to "
(2) Press the
(3) Connect the test leads to the circuit under test.
The measured value appears on the display.
When the measurement value is lower than 35±25Ω, th e

instrument beeps.

Note:◇ Hold the clamp sensor in the holster, while making the

6-6 Capacitor Measurement

(1) Set the Function Selector Switch to "
(2) Press the
(3) Connect the test leads to the circuit under test.
The measured value appears on the display.
Note:◇ Hold the clamp sensor in the holster, while making the

SEL

Button. "" mark is shown on the display.

lead to the cathode.

lead to the anode.

AnodeCathode

Test Lead

diode measurement

SEL

Button. " " mark is shown on the display.

continuity measurement

SEL

Button. "F" mark is shown on the display.

capacitor measurement.

Red Black

".

AnodeCathode

Test Lead

".

".

6-7 Frequency Measurement

DANGER

● In order to avoid possible shock hazard, never make

measurement on circuits with a maximum voltage difference
of 600V or greater between conductors (300V or greater
between a conductor and ground).

● Do not make measurement with the test leads connected

to the circuit under test. Never make measurement with the
battery compartment cover removed.

● Do not make current measurement with the test leads

connected to the circuit under test.

● Keep your fingers and hands behind the protective fingerguard

during measurement.

(1) Set the Function Selector Switch to "Hz."
(2) Measuring frequency of current:
Adjust one of the conductors to the center of the clamp

sensor's arrow.

Measured value is shown on the display.

Measuring frequency of voltage:
Connect the test leads to the circuit under test. Measured

frequency is shown on the display.

Note:◇ Do not use both the clamp sensor and the test leads at

the same time, while making the frequency measurement.

#

Prohibition

◇ Hold the test leads in the holster, while making the frequency

measurement by using the clamp sensor.

◇ Hold the clamp sensor in the holster, while making the

frequency measurement by using the test leads.

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7．OTHER FUNCTIONS

7-1 Auto-Power-Save Function

● A small amount of current is consumed even in the power-save

state. Make sure to set the Function Selector Switch to the
OFF position when the instrument is not used.

This function helps to avoid unwanted exhaustion of the batteries
because of leaving the instrument powered on and extend battery
life.
The instrument automatically shifts to the power-save state about
15 minutes after the last Function Selector Switch or other switch
operation.
A minute before power-save mode the instrument beeps 5 times,
finally beeps longer and then shifts to the power-save mode.

To return to the normal state:
Press the
power-save mode state to the normal state.

Note:◇ Pressing the

(ex.) When the function is 60A and in the power-save

To cancel the Auto-Power-Save Function
To cancel the Auto-Power-Save Function, turn the function

switch from OFF position to any other position with pressing

SEL

Note:◇ When the function switch is 60A or 120A, pressing A

In this case, pressing A ZERO ADJ Button over 2 sec once

To enable the Auto-Power-Save Function once again
Turn the function switch to the OFF, and then to any position.

Button or the

to return from the power-save mode state, the function of
each button is also enabled.

mode, pressing
power-save mode and changes from initial AC mode to

DC mode.

Button.

ZERO ADJ Button over 2 sec enables to cancel the Auto­Power-Save Function.

agin enables the Auto-Power-Save Function.

NOTE

SEL

Button to return from the

Button or the

SEL

SEL

Button over 2 sec

Button over 2sec releases the

7-2 Data Hold Function

This is a function to freeze a measured value on the display.
Press the
data hold state, the reading is held even if input varies. "
mark is shown on the LCD. To exit the data hold state, press the

Note:◇ Data Hold Function is not effective while making

   ◇ When the function is on the position where

Button once to hold the current reading. In this

Button again.

Continuity or Diode measurement.

A ZERO ADJ Button is effective, pressing
A ZERO ADJ Button cancels the held indication.

SEL

SEL

Button or

Button or

8．BATTERY REPLACEMENT

WARNING

Battery
Compartment
Cover

#

CAUTION

#

" is shown on the

" mark is not shown if the batteries are

Screw

● In order to avoid possible shock hazard, always disconnect

the test leads from the circuit under test and set the Function
Selector Switch to the OFF position before trying to replace the
batteries.

●Do not mix new and old batteries.

● Install batteries in the orientation as shown inside the battery

compartment, observing correct polarity.

When the battery voltage warning mark "
top left corner of the LCD, replace the batteries. Note that the
display blanks and "
completely exhausted.
(1) Set the Function Selector Switch to "OFF."
(2) Remove the instrument from the holster.
(3) Loosen the battery-compartment-cover-fixing screw on the

lower back of the instrument.
(4) Replace the batteries with two new R03 (UM-4) 1.5V batteries.
(5) Put the battery compartment cover back in place and tighten

the screw.

Batteries

[ How to storage the clamp sensor and the test leads ]

"

Wind the lead around the folder.

Clamp Sensor

Test Leads

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