QJ84 Digital DC Dual arm BridgeDetailed product description：

QJ84 digital bridge is the best product in the wire and cable industry for testing core wire resistance.
Can replace QJ42, QJ44, and QJ57 DC double arm bridge (Kelvin bridge).
The digital DC bridge series has been awarded the Shanghai High tech Achievement Transformation Project.

model	QJ84 digital DC (double arm) bridge
measurement range	0-20k Ω seven range range
Minimum resolution	1μΩ
range	measurement range	resolution	test current	accuracy class
20mΩ	0-19.999mΩ	1μΩ	1A	0.5%
200mΩ	0-199.99mΩ	10μΩ	1A	0.1%
2Ω	0-1.9999Ω	100μΩ	100mA	0.05%
20Ω	0-19.999Ω	1mΩ	100mA	0.05%
200Ω	0-199.99Ω	10mΩ	10m A	0.05%
2kΩ	0-1.9999kΩ	100mΩ	1m A	0.05%
20kΩ	0-19.999kΩ	1Ω	100μA	0.05%
display	4 1/2 LED digital tube
power supply	AC 220V 50Hz power consumption 6W
size	(W)265 mm×(H)110 mm×(D)295mm
weight	2.5kg

The QJ84 digital wide range DC bridge is an upgraded product of our factory, which is based on the bridge circuit and uses precision alloy winding resistors as the reference for the Kelvin bridge. They not only have the same simple, fast, and eye-catching features as digital multimeters. At the same time, it inherits the advantages of accurate, stable, and reliable Kelvin (double arm bridge) bridge. It is an ideal product for precision measurement of various types of DC low value resistors by industrial and mining enterprises, scientific research units, colleges and universities, and metrology departments.
Accuracy is superior to that achieved by an external galvanometer connected to a DC resistance bridge of the same level.
Simply connect the tested resistor and select the appropriate range, without the need for manual operation during the testing process.
The fast sampling time is 0.4 seconds, and stable data can generally be displayed within a few seconds.
Featuring a 200mm large digital display, the handwriting is clear and easy to read.
The stable main reference resistor is made of precision manganese copper alloy wire winding. Stability is better than 0.02%.
The reliable main components are imported original and specially selected for aging.