ETCR series clamp type grounding resistance meterThis is a major breakthrough in traditional grounding resistance measurement technology, widely used in the measurement of grounding resistance in power, telecommunications, meteorology, oil fields, buildings, and industrial electrical equipment.

ETCR series clamp type grounding resistance meterWhen measuring a grounded system with a circuit, there is no need to disconnect the grounding lead or auxiliary electrodes, which is safe, fast, and easy to use.

ETCR series clamp type grounding resistance meterIt can measure grounding faults that cannot be measured by traditional methods and can be applied to situations where traditional methods cannot measure them, because the ETCR series clamp type grounding resistance meter measures the comprehensive value of grounding body resistance and grounding lead resistance.

ETCR series clamp type grounding resistance meterThere are two types of jaws: long jaws and round jaws, as shown in the following figure. Long jaws are particularly suitable for situations where flat steel is grounded.

In addition, the C-type clamp type grounding resistance meter can also measure the leakage current and neutral line current of the grounding system.

1. In any case, special attention should be paid to safety when using this caliper.

2. Pay attention to the measurement range and usage environment specified in this caliper table, and prohibit caliper measurement of power lines.

3. Pay attention to the labeling text on the surface and back panels of this clamp.

Before starting up, pull the trigger once or twice to ensure that the jaws are closed properly.

During the power on self-test process, do not pull the trigger or clamp any wires.

6. The self check must be completed and the "OL Ω" symbol must be displayed before the tested object can be clamped.

7. The contact surface of the jaws must be kept clean and cannot be wiped with corrosive agents or rough objects.

8. Avoid impact on the clamp surface, especially the joint surface of the jaws.

9. In dangerous situations, it is strongly recommended to use our company's explosion-proof clamp type grounding resistance meter.

10. Explosion proof products are strictly prohibited from disassembling or replacing batteries in hazardous areas.

11. It is normal for this caliper to make a buzzing sound during measurement.

12. Do not measure the current of the wire beyond the upper limit of this clamp meter.

13. If you haven't used this clamp for a long time, please remove the battery.

14. Disassembly, calibration, and maintenance of this caliper must be carried out by authorized personnel.

15. If the continued use of this clamp table poses a danger due to its malfunction, it should be immediately stopped and sealed, and handled by an authorized and qualified organization.

16. The content marked with "*" in this user manual is limited to Type C.

1. Series model

Note: "√" indicates the existence of this specification.

2. Limit and accuracy

Note: "*" is only applicable to Type C.

Power supply: 6VDC (4 No. 5 alkaline dry batteries)

Working temperature: -10 ℃ -55 ℃

Relative humidity: 10% -90%

LCD display: 4-digit LCD digital display, length and width 47 × 28.5mm

Jaw opening size: 32mm

Clamp quality (including battery): Long clamp 1160g; Round clamp 1120g

Clamp size: long clamp length 285mm, width 85mm, thickness 56mm

Round jaw length 260mm, width 90mm, thickness 66mm

Explosion proof mark: Ex ia Ⅱ B T3 Ga (Explosion proof certificate number: CE13.2263)

Protection level: Double insulation

Structural features: Clamping method

Range shifting: automatic

External magnetic field: ＜ 40A/m

External electric field: ＜ 1V/m

Single measurement time: 1 second

Resistance measurement frequency: ＞ 1KHz

Maximum resolution for resistance measurement: 0.001 Ω

Resistance measurement range: 0.01-1000 Ω

*Current measurement range: 0-20A

*Tested current frequency: 50/60Hz

*Can store measurement data: 99 sets

*Threshold value setting range for resistance alarm: 1-199 Ω

*Current alarm critical value setting range: 1-499mA

Note: "*" is only applicable to Type C.