HG112Low resistance meter testerIt is a standard for measuring, calibrating, and verifying DC low resistance testers (digital bridges, micro ohmmeters, etc.).HG112 low resistance meter testerThere are ten measuring ranges in total×10³Ω×10²Ω×10¹Ω×10⁰Ω×10^-1Ω×10^-2Ω×10^-3Ω×10^-4Ω×10^-5Ω×10^-6Ω. Each range has 20 resistance values.×10^-2Ω×10^-3Ω×10^-4Ω×10^-5Ω×10^-6The Ω range is a dedicated DC analog resistance box that uses a resistance network circuit to provide (0.01m Ω～ 1 μ Ω) DC analog equivalent resistance under the principle of DC voltage equivalence.

stem or root of plantsThe calibrator can verify the measuring rangeIn（1 μΩ～２０kΩ）Accuracy ≤ 5 ×10^-4DC resistance tester (digital bridge, micro ohmmeter).

2、 Technical indicators

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

Power consumption: Low range resistor disk ×10^-2Ω×10^-3Ω×10^-4Ω×10^-5Ω×10^-6Ω is composed of a resistor network. The power of each disc should be different.

Low range resistor disk10^-2Ω, rated current ≤ 2A

Low range resistor disk10^-3Ω, rated current ≤ 7A

Low range resistor disk10^-4Ω, rated current ≤ 10A

Low range resistor disk10^-5Ω, rated current ≤ 13A

Low range resistor disk10^-6Ω, rated current ≤ 15A

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

6. Insulation resistance: The insulation resistance between the metal casing and the terminal post of the instrument under nominal conditions shall not be less than500MΩ, test voltage 500V.

7Voltage withstand test:The instrument should withstand the pressure between the metal casing and the terminal under nominal conditions50HzThe sine wave AC voltage is1000VThe test lasted for 1 minute without breakdown or discharge phenomenon.