Safety Information - Before use, read the manual -Specification

This product has been designed and manufactured in accordance with the safety
standards applicable to IEC 61010-2-32 Electronic Measuring Equipment andhas passed the inspection. Using this product in ways not specified in thismanual may damage its protection function. The instructions given under theheading of “WARNING” and “CAUTION” must be followed to prevent
accidents.

General Specification

WARNING : Intended to prevent personal injury such as burn andelectric shock and other serious accidents.
CAUTION : Intended to prevent misuse that could result in personal
injury and damage to equipment including this instrument.

WARNING
1. This is a clamp meter for low-voltage circuits. Never use it on thepower line that exceeds 600VAC to ground. The measurementclassification category of this instrument is 300V CAT. III, 600V
CAT. II.
2. Use the meter only as described in this manual.
3. Do not apply more than the rated maximum input.
4. Pay special attention to voltages above 33VAC (46.7Vpeak) and70VDC that are hazardous to the human body.
5. Do not use the meter if it is damaged or broken.
6. Do not use the meter with the battery lid or rear case removed.
7. During measurement, keep your fingers behind the barrier (fingerguard).
8. When measuring un-insulated conductors, be careful not to touchthem. Otherwise you will suffer electric shock.
9. Do not use the meter near flammable gases or solvents.
10. Do not use the meter with wet hands or in a damp environment.
11. Do not disassemble or modify the meter nor use components not
specified by the manufacturer.
12. Inspect the meter at least once a year.
13. The meter is for indoor use.

Electrical Specification

Digital Display: 3 3/4 digits LCD display with maximum reading 3999
Analog Display: 42 segments fast analog bar display
Symbol and Scale range: adjust automatically according range and input signal
Polarity: When negative signal in apply to the meter,
will show.
Over Load: When the signal larger than the maximum will be show
Sample Rate: 2 times/sec for digital data
20 times/sec for analog bar
Low Power Indication: When the battery is under the proper operation range,
will appear on the LCD display.
Power Source: R03 or AAA 1.5V battery x 2.
Auto Power Off: If there is no key or dial operation for 30 minutes, the meter
will power itself off to save battery consumption.
Battery Life: Approx. 150 hrs
Power Consumption: 7.4mW
Clamp opening size: 25mm
Operating temperature: 0˚C ~ 40˚C, <80% RH, No condensation
Storage temperature: -10˚C ~ 60˚C, <70% RH, No condensation
Approvals: IEC61010-2-32 300V CAT.III 600V CAT.II
Environmental conditions: Altitude up to 2000 meters, indoor use, pollution
degree 2DCM400
DIGITAL CLAMP METER

Withstand voltage: AC3.7kV (50/60Hz) for a minute.
Dimension (L x W x H) : 193 x 50 x 28mm
Weight: 230g
Accessory: Instruction Manual, Carrying case (C-DCM400), Test lead (TL-23a).

Dempa Bldg,Sotokanda2-Chome
Chiyoda-Ku,Tokyo,Japan

Symbol Definition

Instrument Familiarization

Measuring Instruction
AC Current Measurement

The accuracy specification is defined as ±( …%reading+…count )At 23±5˚C, ≦80%RH

Switch the main function selector torange.
Open the clamp by pressing the jaw-opening handle and insert the cable to bemeasured into the jaw.
Close the clamp and get the reading from the LCD panel.

DCV (Autorange)
Range

Resolution

Accuracy

Input
Impedance

400V
600V

0.1V
1V

±(1%rdg.+2dgt.)

1MΩ

Overload
Protection
660Vrms

Note:
Before this measurement, disconnect the test lead with the meter for safety.
In some occasion that the reading is hard to read, push the HOLD button andread the result later.

ACV (Autorange)
Range

Resolution

400V
600V

0.1V
1V

Accuracy
50Hz〜500Hz

Input
Impedance

Overload
Protection±(1.5%rdg.+5dgt.)

1MΩ

660Vrms

Low battery indication

Alternative source indication

Auto range indicationDirect source indication

Overload
Protection

Hold Data indication

Resistance

600Arms

Continuity function indication

Polarity indication

Voltage measurement indication

Analog bar graph indication

Current measurement indication

Frequency Measurement indication

ACA (Autorange)
Range

Resolution

40A
400A

0.01A
0.1A

Accuracy
50Hz〜60Hz

60Hz〜500Hz±(1.9%rdg.+5dgt.) ±(2.5%rdg.+5dgt.)

Ohm (Ω)Range

Resolution

Accuracy

MAX Test
Voltage

Overload
Protection

400Ω

0.1Ω

±(1%rdg.+2dgt.)

1.5VDC

600Vrms

Continuity (SANWA ELECTRIC
INSTRUMENT CO.,LTD.

⑩CORRECT)
Active Region<40 ΩRange

MAX Test
Voltage

Overload
Protection

1.5VDC

600Vrms

Frequency (Hz) (Autorange)
Function

Range

Resolution

Current
Frequency

20Hz〜4kHz
10kHz
4kHz
40kHz
400kHz
1MHz

1Hz
10Hz
1Hz
10Hz
100Hz
1kHz

VoltageFrequency

Accuracy

Sensitivity

Overload
Protection±(0.1%rdg.+1dgt.)

2Arms

600Arms±(0.1%rdg.+1dgt.)

3Vrms

600Vrms①②③④⑤

Current Sensing Clamp
Barrier
Jaw-opening handle
Main fuction selector
LCD display⑥⑦⑧⑨⑩

COM input terminal
Positive input terminal
Data hold button
Battery lid
Rear case
INCORRECT5Vrms

ACV Measurement

DCV Measurement

Resistance Measurement

Maximum Input Voltage is 600V AC/DC. Do not attempt to take any
voltage measurement that may exceed to avoid Electrical shock hazard
and/or damage to this instrument.

Maximum Input Voltage is 600V AC/DC. Do not attempt to take any
voltage measurement that may exceed to avoid Electrical shock hazard
and/or damage to this instrument.

Switch the main function torange.
Connect red test lead to “+” terminal and black one to the “ COM ” terminal.
Connect tip of the test leads to the points where the value of the resistance isneeded.
Read the result from the LCD display.

Switch the main function selector to range.
Connect red test lead to “+” terminal and black one to the “ COM ” terminal.
Measure the voltage by touch the test lead tips to the test circuit where thevalue of voltage is needed.
Read the result from the LCD display.

Switch the main function selector to range.
Connect red test lead to “+” terminal and black one to the “ COM ” terminal.
Measure the voltage by touch the test lead tips to the test circuit where thevalue of voltage is needed.
Read the result from the LCD display.

Note:
When take resistance value from a circuit system, make sure the power is cut
off and all capacitors need to be discharged.

WARNINGWARNING

Continuity Test
Switch the main function torange.
Connect red test lead to “+” terminal and black one to the “ COM ” terminal.
Connect tip of the test leads to the points where the conduction condition
needed.
If the resistance is under 40Ω, the beeper will sound continuously.

BeeperShort circuit

Frequency measurement from the terminals
Switch the main function to “ Hz ” range.
Connect red test lead to “+” terminal and black one to the “ COM ” terminal.
Connect tip of the test leads to the points where the frequency of the voltage
signal is needed.
Read the Result from the LCD display.

Frequency measurement with the clamp
Switch the main function selector to “ Hz ” range.
Open the clamp by pressing the clamp-opening handle and insert the cable tobe measured into the clamp.
Close the clamp and get the reading form the LCD display.
Note:
When doing frequency measurement, user should either use the terminal signal
or clamp signal but not both. If both sources are applied an error will occur.

Maintenance
WARNING
1. The following instructions are very important for safety.
Read this manual thoroughly to ensure correct maintenance.
2. Calibrate and inspect the meter at least once a year to ensure safety
and maintain its accuracy.
1. Maintenance and Inspection
1) Appearance: Is the meter not damaged due to falling or other cause?
2) Test leads:
・Are the core wires not exposed from the test leads?
・Is the plug when inserted to the input terminal not loose?
If any of the above problems exists, stop using the meter and request for repair.

Open circuit

Battery Changing
WARNINGTo prevent electrical hazard or shock, turn off clamp meter and disconnect
test leads before removing battery lid.
Never uses the meter before the battery lid is closed.
1. When the battery voltage drop below proper operation range theappear on the LCD display and the battery need to changed.

symbol will

2. Before changing the battery, switch the main dial to “OFF” and disconnect
test leads. Open the battery lid by a screwdriver.
3. Replace the old batteries with two R03 or AAA size batteries.
Close the battery lid and fasten the screw.

2. Inspection
Inspect the meter at least once a year.
3. Storage

CAUTION
1. The panel and case are not resistant to volatile solvent and must not
be cleaned with thinner or alcohol.
2. The panel and case are not resistant to heat. Do not place the meternear heat-generating devices.
3. Do not store the meter in a place where it may be subjected tovibration or where it may fall.
4. Do not store the meter in places under direct sunlight, or hot, cold orhumid places or places where condensation is anticipated.
5. If the meter will not be used for a long time, remove the batteries.
4. Battery when the meter is shipped:
A battery for monitoring has been installed prior to shipment from thefactory. It may be discharged before the expiration of the described battery
life.
*The battery for monitoring is a battery used to check the functions andperformance of the product.

DRAWING No. DCM400 06-1101 2040 6011