QJ44 Portable Double Bridge

QJ44 portable DC double bridge is with built-in null indicator and cell box, suitable to measure DC resistance of electric motors, power transformer winding, electric conductivity of metal, contact resistance of electric brush and switches, and temperature rise test. Effective range from 10µΩ to 11.000Ω.

Description

Application

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

  1. Measuring range: 0.01mΩ ~ 11.000Ω
  2. Accuracy : 0.05%
  3. Main Parameter under each range
    Multiplying powerRangeResolutionAccuracy class
    x 10-20.01~1.1000mΩ0.5μΩ1
    x 10-10.1~11.000Ω5μΩ0.5
    x 11~110.00Ω50μΩ0.2
    x 100.01~1.1000Ω500μΩ0.2
    x 1020.1~11.000Ω5mΩ0.2
  4. Power Supply: built-in null indicator power supply 9V (6F22 laminated cell 2pcs)

       built-in bridge power supply 1.5V (D size cell 6pcs)

  1. Dimension: 320 x 280 x 170(mm)
  2. Weight: 5kg (approx)