The QJ23 Wheatstone Resistance Bridge is equipped with a built-in galvanometer and batteries designed for the measurement of resistance over the range 1 Ω to 9.999MΩ.
The QJ23 is a stable and accurate Wheatstone bridge for resistance measurements. The 4 Rheostat decades may also be used as an adjustable 4-dial decade resistance box. Self-contained with built-in galvanometer and batteries, the QJ23 is housed in a lightweight and durable carrying case. The instrument can be carried about with ease.
FEATURE
Wheatstone bridge with built-in galvanometer
Measurement range:1 Ω to 9.999MΩ
Best resolution: 0.01 µΩ
Resistance elements made by high quality alloy material with low temperature coefficient
Wide measurement range, high accuracy, stability and reliability
Rugged carry case, suitable for both field and laboratory use
Battery powered, with input jack and terminals for optional external DC power source
With output terminals for external galvanometer
SPECIFICATION
Range: 1 Ω to 9.999MΩ
Galvanometer: Built in
Galvanometer Sensitivity: better than1 μA/mm
Power: Built in Dry cells 3x 1.5V, or external
Dimensions: 240 x 180 x 140 mm
Weight: Approximately <2kg
Accuracy: ± 0.2% at 10K Ω range / ± 0.2% at 10MΩ range
Multiplier
Measure Range
Resolution
Accu-racy
Power
μA/mm
X10-3
0 ~ 9.999Ω
0.001Ω
2%
4.5V
2
X10-2
0 ~ 99.99Ω
0.01Ω
2%
4.5V
0.2
X10-1
0 ~ 999.9Ω
0.1Ω
0.2%
4.5V
0.2
X1
0 ~ 9.999 kΩ
1Ω
0.2%
4.5V
0.2
X10
0 ~ 99.99 kΩ
10Ω
0.5%
6V
1
X102
0 ~ 999.9 kΩ
100Ω
0.5%
15V
2~5
X103
0~ 9.999MΩ
1000Ω
2%
21V
10
5~ 9.999MΩ
1000Ω
2%
36V
10
Note: The accuracy of built-in galvanomter is more than 1grid;The sensitivity is 2 for100 ~ 499.9kΩ, the sensitivity is 5 for500 ~ 999.9kΩ
Long measuring test lead: To measure transformer usually requires long measuring lead wire, the cross section of lead wise shall not be too small, i.e. the resistance of each conductor shall not be greater than 0.1Ω.
