9600 type multifunctional DC comparator calibration deviceDetailed product description：

9600 type multifunctional DC comparator calibration device

Description:
The 9600 multifunctional DC comparator calibration device is a DC comparator instrument with high accuracy, wide measurement range, complete functions, and wide applications. Suitable for verifying high-precision potentiometers, standard batteries, standard resistors, DC resistance boxes, DC bridges, and can also be used to measure platinum resistance thermometers and germanium resistance thermometers. It is currently the most ideal and practical calibration device for metrology departments, scientific research and production units.
Main technical parameters
1. Measurement range of this device:
Voltage: ± 0.1111111 to ± 2.1111110V
Potentiometer: ± 0.01111111 to ± 2.1111110V
Resistance: 10-4-106 Ω
2. The "potential difference meter" function of this device complies with the requirements of the JJG505-87 National Metrological Verification Regulations. Its basic error:
Minimum step of range error formula
×1 ±1×10-6（Ux+10-1）V 0.1µV
×0.1 ±2×10-6（Ux+2×10-2）V 0.01µV
3. The "bridge" function of this device complies with the requirements of JJG506-87 National Metrological Verification Regulations.

The basic error is shown in the table:

Work Anzhe (AT)	Resistance voltage drop (mV)	Primary lap count (T)	Error formula
Iw ≥ 20	UR ≥ 20	Wx ≥ 100	±1×10-6（Rx+10-1RN）(Ω)
Iw ≥ 20	UR ≥ 20	Wx = 10	±1.4×10-6Rx (Ω)

The accuracy of measuring standard resistance is shown in the table:

Measurement range (Ω)	10-4	10-3 10-2 10-1	100~104	one hundred and five	one hundred and six
accuracy	2×10-5	2×10-6	1×10-6	2×10-6	2×10-5

9600 type multifunctional DC comparator calibration device