QJ57 DC Electric Bridge

QJ57 DC double electric bridge with built-in transistor amplify galvanometer and power supply, is suitable for DC resistance test especially for wires and cables. Measuring range from 0.01µΩ to 1.11110kΩ.

Description

Application

QJ57 DC double electric bridge adopts Kelvin bridge circuit with built-in transistor amplify galvanometer and power supply. It is suitable for DC resistance test in the factories, laboratories and field workplace as well.

It can be used to measure DC resistance, resistivity of metal conductor, resistance of wire, resistance of DC current divider, contact resistance of switches and electrical appliances, and wiring resistance of various electric motors, power transformers. Meanwhile, it can also be used to carry out temperature rise test.

Main Technical Specification

  1. Measuring range: 0.01μΩ ~ 1.11110kΩ
  2. Accuracy : 0.05%
  3. Main Parameter Under each range
    Range magnificationEffective range (Ω)Accuracy (%)
    X 1050~1111.100.05
    X 1020 ~ 111.110
    X 100 ~ 11.1110
    X 10 ~ 1.11110
    X 10-10 ~ 0.111110
    X 10-20 ~ 0.01111100.2
    X 10-50 ~ 0.001111102
  4. Power Supply: built-in null indicator power supply 9V (6F22 battery 2pcs)

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

  1. Dimension: 300 x 250 x 160(mm)
  2. Weight: 6kg (approx)