QJ44 double bridge is portable DC double bridge designed on Kelvin bridge circuit. With built-in null indicator and cell box, it is suitable for accurate measurement on DC low resistance below 11Ω in the factories, laboratories, and field workplace as well.
It can be used to measure DC resistance of electric motors, power transformer winding, electric conductivity of metal, contact resistance of electric brush and switches, and carry out temperature rise test.
Main Technical Specification
- Measuring range: 0.01mΩ ~ 11.000Ω
- Accuracy : 0.05%
- Main Parameter under each range
Multiplying power Range Resolution Accuracy class x 10-2 0.01~1.1000mΩ 0.5μΩ 1 x 10-1 0.1~11.000Ω 5μΩ 0.5 x 1 1~110.00Ω 50μΩ 0.2 x 10 0.01~1.1000Ω 500μΩ 0.2 x 102 0.1~11.000Ω 5mΩ 0.2
- Power Supply: built-in null indicator power supply 9V (6F22 laminated cell 2pcs)
built-in bridge power supply 1.5V (D size cell 6pcs)
- Dimension: 320 x 280 x 170(mm)
- Weight: 5kg (approx)