INSTRUCTION MANUALDIGITAL CLAMP METERKEW SNAP SERIESKEW 2009R

Contents
１．Safety Warnings ････････････････････････････････････････ １
２．Features ･･･････････････････････････････････････････････ ５
３．Specifications ･･････････････････････････････････････････ ７
４．Instrument Layout ･･･････････････････････････････････････ 11
５．Preparation for Measurement ････････････････････････････ 14
５−１ Checking Battery Voltage ･･････････････････････････ 14
５−２ Checking Switch Setting and Operation ･････････････ 14
６．Measurement ･･･････････････････････････････････････････ 15
６−１ DC Current Measurement ･･････････････････････････ 15
６−２ AC Current Measurement ･･････････････････････････ 16
６−３ DC Voltage Measurement ･･････････････････････････ 17
６−４ AC Voltage Measurement ･･････････････････････････ 18
６−５ Resistance Measurement ･･････････････････････････ 19
６−６ Continuity Check ･･････････････････････････････････ 20
６−７ Frequency Measurement ･･･････････････････････････ 20
６−８ Peak Measurement ････････････････････････････････ 21
６−９ Average Measurement ･････････････････････････････ 23
７．Other Functions ････････････････････････････････････････ 24
７−１ Auto-power-off Function ････････････････････････････ 24
７−２ Data Hold Function ････････････････････････････････ 24
７−３ LoHz Function ････････････････････････････････････ 25
７−４ OUTPUT Terminal ･････････････････････････････････ 25
８．Battery Replacement ････････････････････････････････････ 28

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 operationof the instrument and retain it in safe condition. Therefore, readthrough these operating instructions before starting using the
instrument.
 WARNING●Read through and understand instructions contained in thismanual 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 containedin the manual.
Failure to follow the above instructions may cause injury,
instrument damage and/or damage to equipment under test.
Kyoritsu is by no means liable for any damage resulting from the
instrument in contradiction to this cautionary note.
○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 cancause serious or fatal injury.
 CAUTION is reserved for conditions and actions that cancause minor injury or instrument damage.

̶1̶

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

#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.
This instrument satisfies the marking requirement defined in
the WEEE Directive. This symbol indicates separate collection
for electrical and electronic equipment.
 DANGER●Never make measurement on a circuit above 750VAC/1000VDC.
●Do not attempt to make measurement in the presence offlammable 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 iswet.
●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, suchas 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.
●Keep your fingers and hands behind the barier and protective
fingerguard during measurement.
̶2̶ WARNING●Never 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 iswet.
●Always switch off the instrument before opening the battery
compartment cover for battery replacement.
●Stop using the test lead if the outer jacket is damaged and theinner 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 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 periodof 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.

̶3̶

○Measurement categories (Over-voltage categories)
To ensure safe operation of measuring instruments, IEC 61010
establishes safety standards for various electrical environments,
categorized as O to CAT IV, and called measurement categories.
Higher-numbered categories correspond to electrical environmentswith greater momentary energy, so a measuring instrument
designed for CAT III environments can endure greater momentaryenergy than one designed for CAT II.
O: Circuits which are not directly connected to the mains
power supply.
CAT II : Electrical circuits of equipment connected to an ACelectrical 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 overcurrent protection
device (distribution panel).

O: Device which is
not directly
connected to themains power supply

̶4̶

２．Features●Tear-drop-shaped jaws for ease of use in crowded cable areas andother tight places.
●Accurate true-RMS reading of AC current or voltage with distorted
waveform.
●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-readlocations●Auto-power-off feature to extend battery life.
●Permits easy continuity check with a beeper●Provides a dynamic range of 4200 counts full scale●Wide frequency range from 20Hz to 1kHz
●Uses shrouded transformer jaws to further improve safety●Designed to CAT Ⅳ 600VAC,DC / CAT Ⅲ750VAC,1000VDC
p o l l u t i o n d e g r e e2 s p e c i f i e d b y t h e i n t e r n a t i o n a l s a f e t ystandard:IEC61010-1.

̶5̶

*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 ofalternating current or voltage values.
Many clamp meters using a conventional rectifying circuit have
"RMS" scales for AC measurement. The scales are, however, actuallycalibrated in terms of the effective value of a sine wave though theclamp meter is responding to the average value. The calibration
is done with a conversion factor of 1.111 for sine wave, which isfound 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.
Waveform
A
0

Effective value Average value Conversion Reading errors for Crest factor
factoraverage sensing
Vrms
Vavg
CF
Vrms/ Vavg
instrument
1
A
2≒0.7072
π A≒0.637π
2 2≒1.111

0％

A

A

1

A×1,111-A
×100
A＝11.1％

A
0
A
0
A
0

1
A
3
T
f

A
D=f/T

D

0.5A

2
3
≒1.155A
0.5A×1.1113 ×100A
3＝-3.8％

2≒1.4141
3≒1.732

1 （1.111 D -1） A1f
A T ＝A・D A D ＝
＝
D
D
A D
×100％
AD

*CF (Crest Factor) is found by dividing the peak value by theeffective value.
Examples:
DC: CF =1
Sine wave: CF=1.414
Square wave with a 1: 10 duty ratio: CF=3
̶6̶

３．Specifications●Measuring Ranges and Accuracy (at 23 ℃ ± ５ ℃ , relative
humidity75% or less)
AC Current(RMS value detection, Auto-range)

Range

Display range

400A

0.0〜420.0A

2000A

150〜2100A

Accuracy※(Frequency)±1.3%rdg±3dgt(45〜66Hz)
1.0〜1700Arms±2.0%rdg±5dgt(20Hz〜1kHz)
1700〜2000Arms ±2.3%rdg±3dgt(3000Apeak or less)(45〜66Hz)
Allowable input※For non-sinusoidal waveforms, add ±(1.5% of full scale), for Crest
factor<3.
※4 counts or less is corrected to 0
DC Current, Auto-range

Range
400A
2000A

Display range±0.0〜420.0A±150〜2100A

AC Voltage

Allowable input
0.0〜±2000A

Accuracy±1.3%rdg±2dgt
After zero adjustments(RMS value detection, Auto-range)

Range

Display range

40V

0.00〜42.00V

400V

15.0〜420.0V

750V

150〜788V

Accuracy※(Frequency)±1.0%rdg±2dgt
0.00〜750Vrms(45〜66Hz)(1200Vpeak or less) ±1.5%rdg±5dgt(20Hz〜1kHz)
Allowable input※Input Impedance：approx. 2MΩ <200pF※For non-sinusoidal waveforms, add ±(1.5% of full scale), for Crest
factor<3.
※4 counts or less is corrected to 0
̶7̶

DC Voltage(Auto-range)

Range

Display range

40V

0.00〜±42.00V

400V±15.0〜±420.0V

1000V±150〜±1050V

Allowable input

Accuracy

0.00〜±1000V±1.0%rdg±2dgt※Input Impedance：approx. 2MΩ
Resistance / Continuity
Range

Display range

400Ω

0.0 〜 420.0Ω

4000Ω

150 〜 4200Ω

(Auto-range)
Allowable input

Accuracy

0.0Ω〜 4000Ω

±1.5%rdg±2dgt※Open-loop Voltage：approx.3V, Measuring Current : 0.6mA or less(400Ωrange) 0.06mA or less(4000Ωrange)※The buzzer turns on for resistances lower than 20±1Ω.
Frequency Hz( AC Current)(Auto-range)

Range

Display range

Allowable input

1000Hz8.0 〜 999.9Hz

10.0Hz 〜 1000Hz ±1.5%rdg±5dgt

4000Hz900 〜 4200Hz

1000 〜 4000Hz

Frequency Hz（AC Voltage）

Accuracy±1.5%rdg±5dgt(Auto-range)

Range

Display range

1000Hz8.0 〜 999.9Hz

10.0Hz 〜 1000Hz ±1.5%rdg±5dgt

Allowable input

4000Hz900 〜 4200Hz

900 〜 4000Hz

̶8̶

Accuracy±1.5%rdg±5dgt

Output

Output voltage： 0.1mV ／ 1count

Range

Allowable input Output Voltage (mVDC)

DC400A

0.0〜±400.0A

0〜±400mV

DC2000A

0〜±2000A

0〜±200mV

AC400A

0.0〜400.0A

0〜400mV

AC2000A

0〜2000A

0〜200mV

Accuracy
Within ±1mV
（To the indicatedvalue）※When the display is "OL", the output voltage is 420mV（"-OL"：-420mV）※Output impedance: about 10kΩNote:◇The symbol of "―" in the above table means that the
instrument only displays the value, but the accuracy, theproper operation and the safety are not guaranteed.
̶9̶

●Operating System●Display●Overrange Indication●Response Time
●Sample Rate
●Safety standard●EMC●Environmental standards●Location for use●Temperature and Humidity
for Guranteed Accuracy●Operating Temperatureand Humidity●Storage Temperatureand Humidity●Power Source●Current Consumption●Auto-power-off function●Overload Protection●Withstand Voltage●Insulation Resistance●Conductor Size
●Dimensions●Weight●Accessories●Optional Accessories

ΔΣ modulation
Liquid crystal display with a maximum
count of 4200 plus annunciators"OL" is shown on the display
Approx. 2 seconds.
About 3 times per second.
IEC 61010-1, 61010-2-032, 610102-033, 61010-031 CAT IV 600V /CAT III 1000V Pollution degree 2
EN 61326-1, EN61326-2-2
EU RoHS directive compliant
Indoor / outdoor use, Altitude up to 2000m
23 +/-5℃ , relative humidity up to 75%
without condensation
0-40℃ , relative humidity up to 85%
without condensation-20-60℃ , relative humidity up to 85%
without condensation
Two 1.5VDC R6P (SUM-3) batteries
Approx. 40mA max (ACA).
Automatically powered down in about
10 minutes after the last switch
operation(power consumption: about 200μA)
DC/AC current ranges:
2400A AC for 10sec
DC/AC voltage ranges:
1200V AC/DC for 10sec
Resistance range:
1000V AC/DC for 10sec
7000V AC, 50/60Hz for 5 seconds
between electrical circuit and housingcase or metal part of the jaws
10MΩ or greater at 1000V between
electrical circuit and housing case or
metal part of the jaws
Approx. 55㎜ diameter max.
250(L)x105(W)x49(D)mm
About 540g
Test leads M-7107A
R6P battery
Carrying case M-9094
Instruction manual
Output Lead M-7256.
̶ 10 ̶

４．Instrument Layout
①
⑭

②
③

④

⑮

⑯

⑦
⑤
⑥
⑫

⑨

⑧

⑩

⑪

⑬

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.
When the output lead is inserted into the output terminal, Data
Hold Switch operates as range selection switch.（See 7-4 output
terminal）
̶ 11 ̶

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.
A ／VA ／V
ACA/ACV

Display DCA/DCV

NormalNormalAverage

ResistanceΩ

AveragePeak
FrequencyΩResistance
Display Continuity Display

Continuity
check

Peak

Hz

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 4200. Function
symbols and decimal point are controlled by the microprocessor
based on the selected function and measuring mode.

AC

DC

Average mode
Data Hold

Negative sign

Resistance
VoltageContinuity check

Low battery warning

AmpereLow frequency input
Peak mode̶ 12 ̶

DCA auto zero

⑧Terminal CoverSlides over V/Ω and COM Terminals to prevent access to themwhen 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 achart 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 7107A)
Connected to COM and V/Ω terminals for voltage or resistancemeasurement.
⑭Barrier/ ⑯Protective fingerguard
It is a part providing protection against electrical shock andensuring the minimum required air and creepage distances.
⑮Test Lead Cap
Uncapped condition for CAT II environment
Capped condition for CAT III/ IV environments
The Cap shuld be firmly attached to the probes.
Test leads can be used under the CAT II and CAT III and CAT IV
environments by attaching a protective cap as illustrated below.
Use of our protective cap offers different lengths suitable for thetest environments.
Protective ﬁngerguard
Cap

When the instrument and the test lead are combined and used
together, whichever lower category either of them belongs to will beapplied.
̶ 13 ̶

５．Preparation for Measurement
５－１ Checking Battery Voltage①Set the function selector switch to any position other than"OFF".
②When the display is clear without "BATT" showing, proceed tomeasurement.
③When the display blanks or "BATT" is indicated, replace thebattery according to section 8. Battery Replacement.
NOTE● The Auto-power-off feature automatically turns the instrument
off in about 10 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.
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 modeand 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.)̶ 14 ̶

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 orequipment under test.
●Do not make measurement with the battery compartment cover
removed from the instrument.
●Do not make current measurement with the test leads connectedto the V/Ω and COM terminals.
●Keep your fingers and hands behind the barrier during
measurement.

Correct

Wrong①Set 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" appearson 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.

̶ 15 ̶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 theunderside of the instrument, the reading is indicated positive.
● The Zero Adjust/Reset button may not completely zero adjust theoutput voltage from the OUTPUT terminal. In this case, make zeroadjustment 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.

CorrectWrong̶ 16 ̶

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 range or less,or the frequency of the current is low, "LoHz" is indicated on thedisplay.
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 protective fingerguard
during measurement.

Red test leadBlack
test lead̶ 17 ̶

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 theblack 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, thedisplay 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 protective fingerguard
during measurement.

Red test leadBlack
test lead①Set 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.
̶ 18 ̶

③Connect the tip of the red and black test leads to the circuitunder test and take the reading on the display.
NOTE● When the voltage under test measures 3% of the range 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 protective fingerguard
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 theblack 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 andtake the reading on the display.
̶ 19 ̶

６－６ Continuity Check (400Ω range fixed)※The continuity check mode is enabled by pressing the mode
" is indicated on theselector switch on resistance range. "display to show the instrument in the continuity check mode. The
buzzer beeps, if the resistance under test is 20.0Ω or 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 protective fingerguard
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 theblack 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 indicatedon the display.
⑤Connect the tip of the test leads to the circuit under test. If theresistance 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 thedisplay.
●Trigger threshold is approx. 10V for AC voltage and approx. 40A
for AC current.

̶ 20 ̶

 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 protective fingerguard
during measurement.
①Set the function selector switch to the " 〜 A" or " 〜 V" position.
②Press the mode selector button three times to enter from thenormal mode to the frequency measurement mode. "Hz" should
be indicated on the display.
③Follow instructions for ACA or ACV measurement and take thefrequency reading.
NOTE● When the voltage under test measures 3% of the range 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 crestin effective value. (For example, when the current or voltage
is sinusoidal, the reading equals the crest value divided by thesquare 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.

̶ 21 ̶

 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 protective fingerguard
during measurement.
①The PEAK mode is available on DCA, ACA, DCV and ACV
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 thetransformer 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.
INPUT Current

Peak Hold
Note：For accurate reading, press the Zero Adjust/Reset button toreset the reading after clamping onto the conductor or making
test lead connections to the circuit under test. Then, proceed
to measurement.
̶ 22 ̶NOTE● In the PEAK mode, the auto-ranging feature is disabled andmeasuring ranges are fixed as follows.
DC/ACA: 0-400.0A
DC/ACV: 0-400.0A● When a measured value is 9 counts or less, it is corrected to 0
● The Auto-power-off function is disabled in the PEAK mode aswell.
６－９ Average Measurement●In the Average mode, "AVG" is indicated on the display.
●The display reads a running average of six readings over aninterval 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. "" 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 aninterval of about 2 seconds.

̶ 23 ̶

７．Other Functions
７－１ Auto-power-off Function
 CAUTION●The instrument consumes small amount of battery power in the
Auto-power-off 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 Auto-power-off mode about 10 minutes
after the last switch or button operation.
To exit the Auto-power-off mode, turn the function selector switch
back to "OFF", then to any other position, or press any button.
NOTE● Connecting the output lead to the OUTPUT terminal disables
the Auto-power-off function. The function is enabled on removing
the output lead from the terminal.
● The Auto-power-off function is disabled in the PEAK
measurement mode.
７－２ Data Hold Function
This is a function used to freeze the measured value on thedisplay.
Press the Data Hold button to freeze the reading. The reading will
be held regardless of subsequent variation in input. "" is shownon 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.

̶ 24 ̶NOTE● If the instrument in the Data Hold mode goes into "Auto-poweroff," 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".
"LoHz" is also indicated where input is 3% of range 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.

̶ 25 ̶

①Slide the terminal cover to the right to disclose the OUTPUT
terminal and insert the output lead into the terminal. Make
connection to the recording device.

②When the lead is inserted into the output terminal, auto-rangefunction 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.
③Set 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 indiameter.
● Zero adjustment is not necessary on AC current range.
● On DC current range, the Zero Adjust/Reset button may notcompletely zero adjust the output voltage from the OUTPUT
terminal. In this case, make zero adjustment on the recording device.
● Connecting the output lead to the OUTPUT terminal disables
the Auto-power-off function. The function is enabled on removing
the output lead from the terminal.
̶ 26 ̶

● 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
35 hours.

̶ 27 ̶

８．Battery Replacement
 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 thebattery compartment.
If the battery voltage becomes too low for the instrument to operate
normally, "" is shown on the display. Then, replace the battery.
Note that when the battery is completely exhausted, the display
blanks without "" shown.
①Set the function selector switch to the "OFF" position.
②Unscrew and remove the battery compartment on the bottom of
the instrument.
③Replace the battery observing correct polarity. Use a new R6P orequivalent battery.
④Re-place and screw the battery compartment cover.
Screw

Batteries̶ 28 ̶

Memo̶ 29 ̶DISTRIBUTOR

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

7-22

92-2022F