Product Description

Model QJ23 Portable Wheatstone Resistance Bridge

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 ~ 9.999 Ω	0.001 Ω	2%	4.5V	2
X10-2	0 ~ 99.99 Ω	0.01 Ω	2%	4.5V	0.2
X10-1	0 ~ 999.9 Ω	0.1 Ω	0.2%	4.5V	0.2
X1	0 ~ 9.999 kΩ	1 Ω	0.2%	4.5V	0.2
X10	0 ~ 99.99 kΩ	10 Ω	0.5%	6V	1
X102	0 ~ 999.9 kΩ	100 Ω	0.5%	15V	2~5
X103	0~ 9.999MΩ	1000 Ω	2%	21V	10
	5~ 9.999MΩ	1000 Ω	2%	36V	10

Note: The accuracy of  built-in galvanomter is more than 1 grid; The sensitivity is 2 for 100 ~ 499.9kΩ, the sensitivity is 5 for 500 ~ 999.9kΩ   

SCOPE OF DELIVERY

• QJ23 Portable Wheatstone Resistance Bridge
• Factory calibration report
• Test lead set  

 

OPTIONAL ACCESSORIES

• Accredited calibration certificate (P/N: 9000-QJ23)
• 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.

ORDERING MODEL NUMBER

• Model QJ23