HG112 low resistance meter tester

HG112 low resistance meter tester is a standard instrument for measuring, calibrating and verifying DC low resistance testers (digital bridge, microohmmeter, etc.). The HG112 low resistance meter tester has ten ranges: ×103Ω, ×102Ω, ×101Ω, ×100Ω, ×10-1Ω, ×10-2Ω, ×10-3Ω, ×10-4Ω, ×10-5Ω, ×10- 6Ω. Each range has 20 resistance values. The ×10-2Ω, ×10-3Ω, ×10-4Ω, ×10-5Ω, ×10-6Ω range is a dedicated DC analog resistance box, which uses a resistor network line and provides (0. 01mΩ～1μΩ) DC analog equivalent resistance.

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High voltage/ground resistor (device/box)

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Product description

This calibrator can calibrate DC resistance testers (digital bridge, microohmmeter) with a range of (1 μΩ～20kΩ) and an accuracy of ≤5×10-4.

2. Technical indicators

     Technical indicators: ≤1×10-4～1×10-2
     Calibration temperature: 20℃±1℃, relative humidity: 40%～60%
     Operating temperature: 20℃±5℃, relative humidity: 25%～75%
     Size: 490×300×220
     Basic parameters: The basic parameters of each range of the calibrator are shown in the table below:

Measuring range	Adjustment range	Step disc(Ω)	level of accuracy	Working power supply
Measuring range	Adjustment range	Step disc(Ω)	level of accuracy	Reference value	nominal value	limit value
1µΩ	(0～ 20) µΩ	1µΩ	1	15A	20A	25A
10µΩ	(0～200) µΩ	10µΩ	0.1	13A	15A	17A
100µΩ	(0～ 2) mΩ	100µΩ	0.1	7A	10A	14A
1mΩ	(0～ 20) mΩ	1mΩ	0.02	3A	7A	10A
10mΩ	(0～200) mΩ	10mΩ	0.01	2A	4.5A	5A
100mΩ	(0～ 2) Ω	100mΩ	0.01	700mA	1A	1.4A
1Ω	(0～ 20) Ω	1Ω	0.01	200mA	200mA	450mA
10Ω	(0～200) Ω	10Ω	0.01	70mA	100mA	140mA
100Ω	(0～ 2) kΩ	100Ω	0.01	20mA	20mA	45mA
1kΩ	(0～ 20) kΩ	1KΩ	0.01	7mA	2mA	14mA

Used power: Low-range resistance disks ×10-2Ω, ×10-3Ω, ×10-4Ω, ×10-5Ω, ×10-6Ω are composed of resistor networks. The power of each plate should be different.

Low-range resistance plate × 10-2Ω, rated current ≤ 2A

Low range resistance plate ×10-3Ω, rated current ≤7A

Low range resistance disk ×10-4Ω, rated current ≤10A

Low range resistance disk ×10-5Ω, rated current ≤13A

Low range resistance disk ×10-6Ω, rated current ≤15A

Note: Please do not exceed the maximum current during use, and only for a short period of time, otherwise the resistor will be burned out.

6. Insulation resistance: Under nominal conditions, the insulation resistance between the metal shell and the terminals of the instrument is not less than 500MΩ, and the test voltage is 500V.

7. Withstand voltage test: Under nominal conditions, the instrument should withstand a 50Hz sine wave alternating current voltage of 1000V between the metal shell and the terminals, and the test lasts for 1 minute without breakdown or discharge.

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