KYORITSU 2009A User Manual

KEWSNAP

SERIES

KEWSNAP2009Ａ

DIGITALCLAMPMETER

KYORITSUELECTRICALINSTRUMENTS
WORKS，LTD.

INSTRUCTIONMANUAL

Contents

１．Safety Warnings ……………………………………………………… １
２．Features ……………………………………………………………… ４
３．Specifications ………………………………………………………… ５
４．Instrument Layout …………………………………………………… ９
５．Preparation for Measurement ……………………………………… 12

５−１ Checking Battery Voltage …………………………………… 12
５−２ Checking Switch Setting and Operation ……………………12

６．Measurement ………………………………………………………… 13

６−１ DC Current Measurement ……………………………………13
６−２ AC Current Measurement ……………………………………14
６−３ DC Voltage Measurement ……………………………………15
６−４ AC Voltage Measurement ……………………………………16
６−５ Resistance Measurement …………………………………… 17
６−６ Continuity Check ………………………………………………18
６−７ Frequency Measurement …………………………………… 18
６−８ Peak Measurement ………………………………………… 19
６−９ Average Measurement ……………………………………… 21

７．Other Functions ……………………………………………………… 22

７−１ Sleep Function ……………………………………………… 22
７−２ Data Hold Function ……………………………………………22
７−３ LoHz Function …………………………………………………23

７−４ OUTPUT Terminal …………………………………………… 23
８．Battery Replacement ………………………………………………… 26
９．Optional Accessories …………………………………………………27

―1―

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 retain it in safe condition. Therefore, read through
these operating instructions before starting using the instrument.

WARNING

●

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, instrument
damage and/or damage to equipment under test.

○

The symbol indicated on the instrument means that the user

must refer to related parts in 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 likely to

cause serious or fatal injury.

WARNING

is reserved for conditions and actions that can cause

serious or fatal injury.

CAUTION

is reserved for conditions and actions that can cause

minor injury or instrument damage.

―2―

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

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).
IndicatesACandDC.

DANGER

●

Never make measurement on a circuit above 750VAC/1000VDC.

●

Do not attempt to make measurement in the presence of flammable
gasses, fumes, vapor or dust. Otherwise, the use of the instrument
may cause sparking, which can lead 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 any measurement range.

●

Never open the battery compartment cover when making measurement.

●

Never try to make measurement if any abnormal conditions, such
as broken Transformer jaws 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.

WARNING

●N

ever attempt to make any measurement, if the instrument has any

structural abnormality such as cracked case and exposed metal part.

●

Do not turn the function selector switch with plugged in test leads
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 battery if the surface of the instrument is wet.

●

Always switch off the instrument before opening the battery
compartment cover for battery replacement.

―3―

CAUTION

●

Make sure that the function selector switch is set to an appropriate
position before making measurement.

●

Always make sure to insert each plug of the test leads fully into the
appropriate terminal on the instrument.

●

Make sure to remove the test leads from the instrument before

making current measurement.

●

Do not expose the instrument to the direct sun, extreme temperatures
or dew fall.

●

Be sure to set the function selector switch to the OFF" position
after use. When the instrument will not be in use for a long period
of time, place it in storage after removing the battery.

●

Use a damp cloth and detergent for cleaning the instrument. Do
not use abrasives or solvents.

○

Measurement categories (Over-voltage categories)

To ensure safe operation of measuring instruments, IEC61010

establishes safety standards for various electrical environments,

categorized as CATⅠ to CATⅣ, and called measurement

categories. Higher-numbered categories correspond to electrical

environments with greater momentary energy, so a measuring

instrument designed for CATⅢ environments can endure greater

momentary energy than one designed for CATⅡ.

CAT Ⅰ : Secondary electrical circuits connected to an AC electrical

outlet through a transformer or similar device.

CAT Ⅱ : Primary electrical circuits of equipment connected to an

AC electrical outlet by a power cord.

CAT Ⅲ : Primary electrical circuits of the equipment connected

directly to the distribution panel, and feeders from the
distribution panel to outlets.

CAT Ⅳ :The circuit from the service drop to the service entrance,

and to the power meter and primary over-current
protection device (distribution panel).

S

Incoming wire

CAT.IV

ocket

Interior wiring

CAT.III

Transformer

CAT.I

CAT.II

―4―

●Tear-drop-shaped jaws for ease of use in crowded cable areas and

other tight places.

●Accurate true-RMS reading of AC current or voltage with distorted

waveform.

●LoHz mode automatically adjusts sample rate for easy reading of low

frequency AC current or voltage.

●Average function for easy reading of input with large variation.

●Auto-null function for easy zero adjustment.

●Provides frequency reading in AC current or voltage measurement.

●Auto-ranging feature on current, voltage and resistance ranges.

●Wide measuring range from 0 up to 2000A.

●Terminal cover to avoid the use of an incorrect terminal.

●PEAK function for measuring a peak of input

●Provides recorder output for long hour monitoring

●Data Hold function for easy reading in dimly light or hard-to-read

locations

●Sleep feature to extend battery life.

●Permits easy continuity check with a beeper

●Provides a dynamic range of 4,000 counts full scale

●Wide frequency range from 30Hz to 1kHz

●Uses shrouded transformer jaws to further improve safety

●Designed to CAT.Ⅲ 600VAC,DC / CAT.Ⅱ750VAC,1000VDC pollution

degree2 specified by the international safety standard:IEC61010.

２．Features

―5―

３．Specifications

Measuring Ranges and Accuracy (at 23±5℃, 45-75% relative humidity)
DC Current A

Auto-ranging (Defaults to Lo):
Lo:0-399.9A (Shifts to Hi at 400.0A)
Hi:150-2000A

(Shifts to Lo at 149A. At 2020A or above,"OL" is shown.)

AC Current 〜A (Crest factor(CF): 3.0 or less, peak current: 3000A or less)

Auto-ranging (Defaults to Lo) :
Lo:0-399.9A (Shifts to Hi at 400.0A)
Hi:150-2000A (Shifts to Lo at 149A. At 2020A or above, "OL" is shown.)

DC Voltage V (Input impedance: 2MΩ)

Auto-ranging (Defaults to Lo):
Lo:0-39.99V (Shifts to Mid at 40.00 V)
Mid:15.0-399.9V (Shifts to Lo at 14.9V and to Hi at 400.0V)
Hi:150-1000A

(Shifts to Mid at 149V. At 1020V or above, OL" is shown.)

Measuring Range (Auto-ranging)

０〜±399.9Ａ
±150〜±2000Ａ

Accuracy

±1.5％rdg±2dgt

Measuring Range (Auto-ranging)

0〜399.9Ａ
150〜1700Ａ
1701〜2000Ａ

Accuracy

±1.5％rdg±3dgt(50/60Hz)
±3.0％rdg±4dgt(30〜１kHz)
±3.5％rdg±3dgt(50/60Hz)

Measuring Range (Auto-ranging)

0〜±39.99Ｖ

±15.0〜±399.9Ｖ
±150〜±1000Ｖ

Accuracy

±1.0％rdg±2dgt

―6―

AC Voltage 〜V

(Crest factor(CF): 3.0 or less, peak voltage: 1200V or less)

Auto-ranging (Defaults to Lo):
Lo:0-39.99V (Shifts to Mid at 40.00V)
Mid:15.0-399.9V (Shifts to Lo at 14.9 and to Hi at 400.0V)
Hi:150-750V

(Shifts to Mid at 149V. At 770V or above,OL" is shown.)

Resistance Ω

Auto-ranging (Defaults to Lo):
Lo:0-399.9Ω (Shifts to Hi at 400.0Ω)
Hi:150-3999Ω

(Shifts to Lo at 149Ω. At 4000Ω or above, OL" is shown.)

Continuity Check Ω (Range fixed)

Frequency

OUTPUT(Output impedance: about 10kΩ)

Measuring Range (Auto-ranging)

0〜39.99Ｖ

15.0〜399.9Ｖ
150〜750Ｖ

Accuracy

±1.5％rdg±3dgt(50/60Hz)

±2.0％rdg±4dgt(30〜１kHz)

Measuring Range (Auto-ranging)

０〜399.9Ω
150〜3999Ω

Accuracy

±1.5％rdg±2dgt

Measuring Range

10〜399.9Ω

Accuracy

±1.5％rdg±2dgt

Measuring Range

０〜±399.9Ａ
±150〜±2000Ａ
０〜399.9Ａ

150〜1700Ａ
1701〜2000Ａ

Output Voltage(mVDC)

０〜±399.9mV
±15.0〜±200.0mV
０〜399.9mV

15.0〜170.0mV

170.1〜200.0mV

DC

AC

Accuracy

±1.5％rdg±3mV

±1.5％rdg±3mV(50/60Hz)
±3.0％rdg±3mV(40〜１kHz)
±3.5％rdg±3mV(50/60Hz)

Measuring Range

10〜3999Hz

Accuracy

±1.5％rdg±5dgt

―7―

●Operating System Dual Integration

●Display Liquid crystal display with a maximum

count of 4000 plus annunciators

●Overrange Indication "OL" is shown on the display

●Response Time Approx. 2 seconds.

●Sample Rate About 3 times per second.

●Location for use Indoor use, Altitude up to 2000m

●

Temperature and Humidity

23 +/-5℃, relative humidity up to 75%

for Guranteed Accuracy without condensation

●Operating Temperature 0-40℃, relative humidity up to 85%

and Humidity without condensation

●Storage Temperature -20-60℃, relative humidity up to 85%

and Humidity without condensation

●Power Source 6F22(DC9V) or equivalent battery

●Current Consumption Approx. 15mA max.

●Sleep function Automatically powered down in about 30

minutes after the last switch operation
(power consumption: about 200μA)

●Overload Protection

DC/AC current ranges: 2400A AC for 10sec
DC/AC voltage ranges: 1200V AC/DC for 10sec
Resistance range: 600V AC/DC for 10sec

●Withstand Voltage 5500V AC, 50/60Hz for 1 minute

between electrical circuit and housing
case or metal part of the jaws

●Insulation Resistance 10 MΩ or greater at 1000V between

electrical circuit and housing case or
metal part of the jaws

●Conductor Size Approx. 55㎜ diameter max.

●Dimensions 250(L)x105(W)x49(D)mm

●Weight About 530g

●Accessories Test leads M-7017

6F22 battery
Carrying case M-9094
Instruction manual
Recorder output Plug M-8201

●Optional Accessories Multi-Tran M-8008

Recorder M-5100A, etc.
Output Lead M-7014.

―8―

*EffectiveValue(RMS)

Most alternating currents and voltages are expressed in effective
values, which are also referred to as RMS (Root-Mean-Square) 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) is found by dividing the peak value by the effective value.

Examples:

DC: CF =1
Sine wave: CF=1.414
Square wave with a 1: 10 duty ratio: CF=3

―9―

４．InstrumentLayout

①Transformer Jaws

Pick up current flowing through the conductor.

②Jaw Trigger

Operates the transformer jaws. Press to open the Transformer Jaws.

③Function Selector Switch

Selects function. Also used to power the instrument on.

④Data Hold Button

Freezes the display reading. "H" is shown on the display when Data
Hold is enabled.

︸

①

②

③

④

⑦

⑤

⑥

⑫

⑭

⑪

⑨

⑧

⑩

⑬

⑮

―10―

DataHold

Resistance

Voltage

Ampere

Lowfrequencyinput

DCAautozero

Peakmode

Lowbatterywarning

ContinuityCheck

Negativesign

AC

DC

Averagemode

When the plug is inserted into the output terminal, Data Hold Switch
operates as range selection switch.（See 7-4 output terminal）

⑤Mode Selector Button

Selects measuring mode. The instrument defaults to the normal
mode (NOR). Then, press this switch to cycle through measuring
modes. In any mode, pressing this switch for more than one second
returns the instrument to the normal mode.

⑥Zero Adjust/Reset Button

Used for zero adjustment on DCA and resistance ranges. Also used
to reset the display reading in the PEAK mode. On DCA range,
"AUTO" is shown on the display when auto-zeroing is completed.
(Auto-zeroing is available on 400A range only.)

⑦Digital Display

Field effect digital display with maximum reading of 3999. Function
symbols and decimal point are controlled by the microprocessor
based on the selected function and measuring mode.

―11―

⑧Terminal Cover

Slides over V/Ω and COM Terminals to prevent access to them when
OUTPUT terminal is in use.

⑨OUTPUT Terminal(For AC or DC current range only)

Provides DC voltage output in proportion to the AC or DC current
reading. The output is connected to a recording device such as a
chart recorder for long hour monitoring. No output is available on
voltage and resistance ranges.

⑩COM Terminal

Accepts the black test lead for voltage or resistance measurement.

⑪V/Ω Terminal

Accepts the red test lead for voltage or resistance measurement.

⑫Safety Hand Strap

Prevents the instrument from slipping off the hand during use.

⑬ Test Leads (Model 7107)

Connected to COM and V/Ω terminals for voltage or resistance
measurement.

⑭Output Plug(Model 8201)

Plugs into the OUTPUT terminal for connection to a recording device.
(See section 7ー4, OUTPUT Terminal.)

⑮Barrier

It is a part providing protection against electrical shock and ensuring
the minimum required air and creepage distances.

―12―

５．PreparationforMeasurement

５−１ CheckingBatteryVoltage

①Set the function selector switch to any position other than "OFF".
②When the display is clear without "BATT" showing, proceed to

measurement.

③When the display blanks or "BATT" is indicated, replace the battery

according to section 8. Battery Replacement.

NOTE

● The Sleep feature automatically turns the instrument off in about

30 minutes after the last switch or button operation. Therefore, the

display may be blank even with the function selector switch set to

a position other than "OFF". To operate the instrument in this

case, turn the switch back to the "OFF" position, then to any other

position, or press any button.

５−２ CheckingSwitchSettingandOperation

Make sure that the function selector switch is set to the correct

position, the instrument is set to the correct measuring mode and the

Data Hold function is disabled. Otherwise, desired measurement

cannot be made. (See section 6 for measurement instructions and

section 7 for notes on functions.)

―13―

６．Measurement

６−１ DCCurrentMeasurement

DANGER

●Do not make measurement on a circuit above 1000VDC. This may

cause shock hazard or damage to the instrument or equipment under

test.

●

Do not make measurement with the battery compartment cover

removed from the instrument.

●Do not make current measurement with the test leads connected to the

V/Ω and COM terminals.

●Keep your fingers and hands behind the barrier during measurement.

①Set the function selector switch to the " A" position. DC" should

be shown on the upper left corner of the display.

②With the transformer jaws closed and without clamping them onto

the conductor, press the Zero Adjust/Reset button for about one
second to zero adjust the display. (Zero adjust feature is for 400A
range only.) When zero adjustment is completed, "AUTO" appears
on the display.

③Press the trigger to open the transformer jaws and clamp them onto

the conductor under test, then take the reading on the display. The
most accurate reading will be obtained by keeping the conductor at
the center of the transformer jaws.

Correct

Wrong

―14―

NOTE

● During current measurement, keep the transformer jaws fully

closed. Otherwise, accurate measurement cannot be made. The
maximum measurable conductor size is approx. 55mm in
diameter.

● When the current flows from the upside (the display side) to the

underside of the instrument, the reading is indicated positive.

● The Zero Adjust/Reset button may not completely zero adjust the

output voltage from the OUTPUT terminal. In this case, make zero
adjustment on the recording device.

● Turing the function selector switch to a position other than DCA

cancels the zero adjustment .

６−２ ACCurrentMeasurement

DANGER

●

Never use the instrument on a circuit above 750VAC. This may

cause electrical shock hazard and damage to the instrument or the

circuit under test.

●Do not make measurement with the test leads plugged into the

instrument.

●

Do not make measurement with the battery compartment cover

removed.

●Keep your fingers and hands behind the barrier during measurement.

Correct

Wrong

―15―

①Set the function selector switch to the "〜A" position. AC" should

be shown on the upper left corner of the display.

②Press the trigger to open the transformer jaws and clamp them onto

a single conductor and take the reading on the display. The most
accurate reading will be obtained by keeping the conductor at the
center of the transformer jaws.

NOTE

● During current measurement, keep the transformer jaws fully

closed. Otherwise, accurate measurements cannot be taken.
Maximum conductor size is 55㎜ in diameter.

● Zero adjustment is not necessary in AC current measurement.

● When the current under test measures 3% of the full scale or less,

or the frequency of the current is low, "LoHz" is indicated on the
display.

６−３ DCVoltageMeasurement

DANGER

●Never use the instrument on a circuit above 1000VDC. This may

cause electrical shock hazard and damage to the instrument or the

circuit under test.

●Do not make measurement with the battery compartment cover

removed.

●Keep your fingers and hands behind the barrier during measurement.

―16―

①Set the function selector switch to the " V" position. DC" should

be shown on the upper left corner of the display.

②Slide the terminal cover to the left to disclose the V/Ω and COM

terminals. Plug the red test lead into the V/Ω terminal and the black
test lead into COM terminal.

③Connect the tip of the red and black test leads to the positive (+) and

negative (-) sides of the circuit under test respectively. Take the
reading on the display. If the connection is reversed, the display
indicates the "-" sign.

６−４ ACVoltageMeasurements

DANGER

●Never use the instrument on a circuit above 750VAC. This may

cause electrical shock hazard and damage to the instrument or the

circuit under test.

●Do not make measurement with the battery compartment cover

removed.

●Keep your fingers and hands behind the barrier during measurement.

①Set the function selector switch to the "〜V" position. "AC" should

be shown on the upper left corner of the display.

②Slide the terminal cover to the left to disclose the V/Ω and COM

terminals. Plug the red test lead into V/Ω terminal and the black test
lead into the COM terminal.

Black

testlead

Redtestlead

―17―

③Connect the tip of the red and black test leads to the circuit under test

and take the reading on the display.

NOTE

● When the voltage under test measures 3% of the full scale or less,

or the frequency of the voltage is low, "LoHz" is indicated on the
display.

６−５ ResistanceMeasurement

DANGER

●Never use the instrument on an energized circuit.

●Do not make measurement with the battery compartment cover

removed.

●Keep your fingers and hands behind the barrier during measurement.

①Set the function selector switch to the " Ω" position.
②Slide the terminal cover to the left to disclose the V/Ω and COM

terminals. Plug the red test lead into the V/Ω terminal and the black
test lead into the COM terminal.

③With the tip of the test leads shorted together, press the Zero

Adjust/Reset button to offset the resistance of the test leads.

④Connect the tip of the test leads to the circuit under test and take the

reading on the display.

―18―

６−６ ContinuityCheck(400Ω rangefixed)

※

The continuity check mode is enabled by pressing the mode selector
switch on resistance range. " " is indicated on the display to show
the instrument in the continuity check mode. The buzzer beeps, if the
resistance under test is 20.0Ωor less.

DANGER

●Never use the instrument on an energized circuit.

●Do not make measurement with the battery compartment cover

removed.

●Keep your fingers and hands behind the barrier during measurement.

①Set the function selector switch to the " Ω" position.
②Slide the terminal cover to the left to disclose the V/Ω and COM

terminals. Plug the red test lead into the V/Ω terminal and the black
test lead into the COM terminal.

③With the tip of the test leads shorted together, press the Zero

Adjust/Reset button to offset the resistance of the test leads.

④Press the mode selector button once to enter from the normal mode

to the continuity check mode. " " should be indicated on the
display.

⑤Connect the tip of the test leads to the circuit under test. If the

resistance is 20.0Ω or less, the buzzer beeps.

６−７ FrequencyMeasurement

●

On ACA or ACV range, the frequency of the current or voltage under
test can be counted and shown on the display.

●

In the frequency measurement mode, "Hz" is indicated on the display.

●

Trigger threshold is approx. 10V for AC voltage and approx. 10A for AC
current. At frequency measurement, in case of low input signal, it often
happens that measurement cannot be made. Because range is fixed at
400V for AC voltage and at 400A for AC current.

―19―

DANGER

●Never use the instrument on a high voltage circuit above 750VAC.

This may cause electrical shock hazard and damage to the

instrument or the circuit under test.

●Do not make measurement with the battery compartment cover

removed.

●Do not make current measurement with the test leads plugged into the

instrument.

●Keep your fingers and hands behind the barrier during measurement.

①Set the function selector switch to the "〜A" or "〜V" position.
②Press the mode selector button three times to enter from the normal

mode to the frequency measurement mode. "Hz" should be indicated
on the display.

③Follow instructions for ACA or ACV measurement and take the

frequency reading.

NOTE

● When the voltage under test measures 3% of the full scale or less,

or the frequency of the current or voltage is 40Hz or less, "LoHz" is
indicated on the display.

６−８ PeakMeasurement

●

In the PEAK mode, the display shows current or voltage's crest in
effective value. (For example, when the current or voltage is sinusoidal,
the reading equals the crest value divided by the square root of two.)
The display reading is constantly updated with a maximum crest.

●

In this mode, "PEAK" is indicated on the display.

●

Response time is 300ms in DC measurement and 10ms in AC
measurement.

―20―

DANGER

●Never use the instrument on a circuit above 750VAC/1000VDC.

This may cause electrical shock hazard and damage to the

instrument or the circuit under test.

●Do not make measurement with the battery compartment cover

removed.

●Do not make measurement with the test leads plugged into the

instrument.

●Keep your fingers and hands behind the barrier during measurement.

①The PEAK mode is available on DCA, ACA, DCV and DCA ranges.

Set the function selector switch to the desired position.
Note：Only on DCA range, press the Zero Adjust/Reset button for

about one second to zero adjust the reading with the
transformer jaws closed.

②Press the mode selector button twice to enter from the normal mode

to the PEAK mode. "PEAK" should be shown on the display.

③Follow instructions for DCA, ACA, DCV or ACV measurement.

Note：For accurate reading, press the Zero Adjust/Reset button to reset

the reading after clamping onto the conductor or making test lead
connections to the circuit under test. Then, proceed to
measurement.

Ｖｐ

INPUTCurrent

Ｖｐ／

󰵫2

PeakHold

―21―

NOTE

● In the PEAK mode, the auto-ranging feature is disabled and

measuring ranges are fixed as follows.
DC/ACA: 0-400.0A
DC/ACV: 0-400.0A

● The Sleep function is disabled in the PEAK mode as well.

６−９ AverageMeasurement

●

In the Average mode, "AVG" is indicated on the display.

●

The display reads a running average of six readings over an interval of
about 2 seconds.

●

This mode is available on ACV, DCV, ACA and DCA ranges.

①Set the function selector switch to the desired position.
②Press the mode selector button once to enter from the normal mode

to the Average mode. "AVG" should be indicated on the display.

③Follow instructions for ACV, DCV, ACA or DCA measurement.
④The display shows a running average of six readings over an interval

of about 2 seconds.

―22―

７−１ SleepFunction

CAUTION

●The instrument consumes small amount of battery power in the

sleep mode. Make sure to set the function selector switch to the

OFF position after use.

This is a function to prevent the instrument from being left powered
on in order to conserve battery life. This function causes the
instrument to enter the Sleep (powered-down) mode about 30
minutes after the last switch or button operation.

To exit the Sleep mode, turn the function selector switch back to
"OFF", then to any other position, or press any button.

NOTE

● Connecting the plug to the OUTPUT terminal disables the Sleep

function. The function is enabled on removing the plug from the
terminal.

● The Sleep function is disabled in the PEAK measurement mode.

７−２ DataHoldFunction

This is a function used to freeze the measured value on the display.
Press the Data Hold button to freeze the reading. The reading will be
held regardless of subsequent variation in input. "H" is shown on the
upper right corner of the display while the instrument is in the Data
Hold mode.

To exit the Data Hold mode, press the Data Hold button again.

７．OtherFunctions

―23―

NOTE

● If the instrument in the Data Hold mode goes into "sleep," it will

return to the normal mode.

７−３ LoHzFunction

In ACV or ACA range, if frequency of the voltage or current under test
is 40Hz or lower, the display indicates "LoHz" and sample rate is
automatically switched from the normal 3 times/sec to 2 times/sec to
reduce fluctuation of the reading.
"LoHz" is also indicated where input is 3% of full scale or less.

７−４ OUTPUTTerminal(Forcurrentrangesonly)

DANGER

●Never use the instrument on a circuit above 750VAC/1000VDC.

This may cause electrical shock hazard and damage to the

instrument or the circuit under test.

●Do not make measurement with the battery compartment cover

removed.

●Never apply voltage to the OUTPUT terminal.

①Attach the output plug to a connection lead so that the output

voltage can be connected to a recording device such as a chart
recorder.

―24―

②Slide the terminal cover to the right to disclose the OUTPUT terminal

and insert the output plug into the terminal. Make connection to the
recording device.

③When the plug is inserted into the output terminal, auto-range function

is cleared.
Set the range depending on the state of Data Hold Switch.

Data Hold Switch OFF 400A range
Data Hold Switch ON 2000A range

Note：After measurement, be sure to return Data Hold Switch to OFF

position.

④Set the function selector switch to the desired position (ACA or DCA)

and follow appropriate measurement instructions.

NOTE

● During current measurement, keep the transformer jaws fully

closed. Otherwise, accurate measurement cannot be made. The
maximum measurable conductor size is approx. 55mm in
diameter.

● Zero adjustment is not necessary on AC current range.

● On DC current range, the Zero Adjust/Reset button may not

completely zero adjust the output voltage from the OUTPUT
terminal. In this case, make zero adjustment on the recording
device.

● Connecting the plug to the OUTPUT terminal disables the Sleep

function. The function is enabled on removing the plug from the
terminal.

―25―

● Consult the output voltage specifications shown in section 3 and

adjust the sensitivity of the recording device.

● For long hours of use of the OUTPUT terminal, use an Alkaline

battery, which will extend continuous recording time up to about 24
hours.

―26―

WARNING

●To avoid electric shock hazard, make sure to set the function selector

switch to "OFF" and remove the test leads from the instrument before

trying to replace battery.

CAUTION

●Do not mix new and old battery.

●Make sure to install battery in correct polarity as indicated in the

battery compartment.

If the battery voltage becomes too low for the instrument to operate
normally, "BATT" is shown on the display. Then, replace the battery.
Note that when the battery is completely exhausted, the display
blanks without "BATT" shown.

①Set the function selector switch to the "OFF" position.
②

Unscrew and remove the battery compartment on the bottom of the
instrument.

③Replace the battery observing correct polarity. Use a new 6F22 or

equivalent battery.

④Re-place and screw the battery compartment cover.

８．BatteryReplacement

Screw

Battery

Batterycompartmentcover

―27―

９．OptionalAccessories

● MODEL 8008 (For AC current measurement only)

Multi-Tran Model 8008 is designed to increase the measuring
capability of a clamp meter. With the use of the Multi-tran, you can
not only extend current range over 3000A, but also clamp on a
large bus-bar or conductor.

①Set the function selector switch to the "〜A" position .
②As shown in the figure below, clamp KEW SNAP 2009A onto the

pickup coil of MODEL 8008.

③Clamp MODEL 8008 onto the bus-bar or conductor under test.
④Take the reading on KEW SNAP 2009A and multiply it by 10.

―28―

ＭＥＭＯ

―29―

ＭＥＭＯ

DISTRIBUTOR

92―1394C

06-05

Kyoritsu reserves the rights to change specifications or
designs described in this manual without notice and without
obligations.