GAOTek Light-Weight DC Clamp Meter with High Accuracy

This light-weight DC clamp meter measures DC leakage and low current with a resolution of up to 0.01 mA.




The GAOTek Light-Weight DC Clamp Meter with High Accuracy measures DC leakage and low current. With a resolution of up to 0.01 mA, it provides high accuracy and performance while adopting the latest CT and digital integration technology. It is light weight, easy to carry, and perform multiple additional functions such as on-line monitoring, historical data inquiry, active curve drawing, data storage, printing, zero adjustments, etc. Additionally, this device is widely used in the fields of electricity, communications, meteorology, railroads, oil, construction, scientific & research institutes, industrial and mining establishments, and car circuit maintenance.


  • Compliant with IEC1010-1, IEC1010-2-032, Pollution degree 2, CAT III (600V) safety rules
  • Highest resolution of 0.01 mA
  • Adopts the latest CT and digital integration technology
  • Small sized and easy to carry
  • USB interface to upload data stored in the meter to PC
  • Battery life of up to 60 hours
  • Multiple functionalities
  • Convenient data storage
  • Automatic power off idle time exceeds 5 minutes
  • Zero adjustment calibration
  • Four digit LCD display

Technical Specifications

Range 0.0 mA~6.00 A DC
Resolution 0.1 mA DC
Power Zn-Mn dry battery, 6F22, 9 V DC
Clamp size 0.98 in × 1.1 in (25 mm × 30 mm)

(73 °F±3 °F,below 70%RH)

0.0 mA~300.0 mA DC: ±2 % rdg ±5 dgt
0.30 A~6.00 A DC:   ±2 % rdg ±5 dgt
Shield type Double shielding
Dimension 6.8 in × 2.7 in × 1.4 in (LWH: 175 mm × 70 mm × 38 mm)
LCD dimension 1.3 in × 0.8 in (35 mm × 21.5 mm)

Display Domain: 1.2 in ×  0.5 in (32 mm × 15 mm)

Sampling rate About 2 times/s
Range shift 0.0 mA~6.00 A DC Automatically
Polarity indication Auto identified and display“—”
Test position Tested wire in the jaw centre
Line voltage 600 V DC
Data memory 99 units, FULL blinks when the memory is full
Battery voltage Indicating the battery voltage is lower than 7.2 V
Weight (including the battery) 0.2 lbs (0.12 Kg)
Working current 20 mA
Limit temperature error 14 °F ~ 32 °F (-10 ℃~0 ℃) and 104 °F  ~ 122 °F (40 ℃ ~50 ℃),within 2 % rdg
Temperature and humidity Working: 14 °F ~ 122 °F (-10 ℃~50 ℃), below 80 % RH

Storage: 14 °F  ~ 140 °F  (-10 ℃~60 ℃), below 80 % RH

Insulating strength AC 3700 V/rms (Between the Alloy of the Clamp and the Housing)

Additional Information


  • Under any circumstances, please pay special attention to your safety in the course of using this Clamp Meter
  •  Give heed to label texts and symbols on panel and back plate of this Clamp Meter
  •  Do not input current more than 7 A, the tester measurement cannot exceed 7 A and no OL symbol is indicated
  •  After power on, please calibrate zero before measuring
  •  Please don’t place and store this device in hot and humid condition, locations with moisture condensation and under direct sunlight for a long time
  •  In case voltage of the battery is low, please replace the batteries
  •  In case this Clamp Meter is used for a long time, please take out the batteries
  • When changing batteries, please pay attention to polarity of the battery
  •  Use, disassembly and maintenance of this meter shall be operated by authorized personnel
  •  In case of any danger with use of this meter, please stop using it and seal it for safekeeping immediately; and then, send it for disposal to the authorized agency
  •  Users shall carry out operation based on danger  signs on the meter
  •  Users shall carry out safety operation based on instructions listed e.g. “” and danger signs on this manual

Range and Accuracy

Function Measure Range Accuracy Resolution
DC current 0.0 mA~6.00 A ±2 %rdg ±5 dgt 0.1 mA

(Condition: 73 °F ±5 °F, below 75 % RH, wire in the centre of the jaw)

Electrical Signs

  Extremely dangerous! Operators shall strictly observe safety rules; otherwise there would be dangers of electric shock which may cause personal injuries or casualties
  Dangerous!Operators shall strictly observe safety rules; otherwise there would be dangers of electric shock which may cause personal injuries or casualties.
  Warning!Operators shall strictly observe safety rules; otherwise personal injuries or equipment damages might be caused.
  Double insulation

Structure of the DC Clamp Meter

  1. Clamp (98 in × 1.1 in)
  2. DC current positive input indication
  3. Upper Cover
  4. Totoid Opening Lever
  5. key
  6. Key
  7. Key
  8. LCD
  9. USB Interface
  10. Back cover
  11. Battery cover

LCD Display

  1. DC indication
  2. AC indication
  3. Negative polarity indication
  4. Low battery symbol
  5. Data hold indication
  6. Stored data code
  7. Unit of current indication
  8. Value of current


1.    Start-up, Shutdown

  1. Press key to start up, LCD display will be turned on
  2. Press the key again to shut down the meter
  3. After starting up, if the Clamp meter is left idle for 5 minutes, the LCD displays a message that the meter will shut down automatically. After flickering for 30s, it will shut down formally to reduce battery consumption
  4. In case  key is pressed when the LCD was flickering, the meter will continue to work for 5 minutes
  5. In case the LCD display is very low, charge the battery

2.    Current Measurement

  High voltage, extremely dangerous! Operators shall strictly observe safety rules; otherwise there would be risk of electric shock which causes personal injuries or casualties.
  Dangerous!Please don’t use it to measure current higher than 300 A; otherwise there would be risk of electric shock which causes personal injuries or equipment damages.
  1. Power on
  2. Close tothe measured conductor, press the ZERO key to reset
  3. Press down trigger to open clamp head and clamp to-be-measured conductors. (Pay attention to see that the clamp heads must be totally closed)
  Clamp live wire and null line together is to measure leakage current of electrical equipment (Note: 2 lines)
Clamp earth wire is to measure grounding line leakage current of electrical equipment(Note: single line)
Clamp main line is to measure total current of that main line (Note: single line)

  Note: In order to ensure the accuracy before every measurement, adjust zero close to the wire and then clamp into the current line to test
  1. Read LCD display data. In case symbol was displayed, it means that current of the measured line is beyond the maximum limit of this meter. In this case, please shift the gear with much higher range limit
  In locations where the data is difficult to be read, please use the data holding function. If [DH] symbol is displayed, please discharge data holding state first, and then do the test
Do not test DC current beyond 7A. When the input current is more than 7A, the meter reading may become small, and does not display the over range  OL symbol

3.    Peak Holding

Pressing key continuously in the course of measurement (More than 3 seconds), the leaker will capture current peak values of lines in this period of time. After releasing the key, it will then return to the measuring state.

4.    Hold, Storage and Access Reading

  1. Press key for a short time in the course of measurement (less than 3 seconds), symbol will display. The leaker will hold current measuring data and automatically store in the memory with a unit ID. Press key again to release the hold state and the leaker will continue to measure data. In case stored data reached to 60 groups, press key again and the “” symbol will display, which means storage memory is full; press key to cancel
  2. Press + keys to enter into data access mode and display Unit 1 storage data automatically. Then press key again to turn to the page of stored data. will display when there is no data stored in the memory. Press key to exit data access mode
  3. After entering into data access mode, press key for more than 3 seconds to clean up all stored data. When the leaker displays “” symbol, it means that it has finished clean-up process, and then returns to the measuring state automatically.

How to Change Battery

  Warning! It is dangerous to carry out test when the battery cover plate is not on its position.
Please pay attention to the polarity of battery to avoid damaging the leaker
Chang the low battery in time
If you expect not to use the meter for a long time, please get off the battery to storage
  1. ” symbol means the battery is low and need to be replaced
  2. Press key to shut down the leaker. Before opening the battery cover, please confirm the leaker is in off position and then replace
  3. With qualified new battery, special attention shall be paid to the polarity of battery. Cover the battery cover plate


Clamp tester 1 pc
USB Com cable 1 pc
Software 1 disk
User Manual 1 copy
Warranty card / Certification 1 copy