QJ57E Double Arm Kelvin DC Bridge For Low Resistance

Huazheng Electric Manufacturing (Baoding) Co., Ltd. is one of the leading manufacturers and suppliers of qj57e double arm kelvin dc bridge for low resistance in China. Please feel free to buy high quality equipment for sale here from our factory. Good service and reasonable price are available.

The QJ57E type kelvin double bridge has five decimal measurement reading plates, the full range is composed of seven component limits, and is equipped with a power supply and a zero-pointer, so it can be used for measurement without any other accessories. It is suitable for laboratories, Workshop production line or field site, high-precision measurement of DC median and low-value resistance, small size, easy to use.

In order to meet the measurement needs of different purposes, the power supply of the bridge and the disconnection button of the zero-pointer are independent to control the closing sequence of the measurement circuit. At the same time, the characteristics of the bridge circuit make it possible to measure low-value inductive resistance. The influence of interference caused by stray magnetic fields is relatively reduced.

In order to meet the needs of an external high-sensitivity zero-pointer and a large-capacity power supply, the bridge is equipped with an external zero-pointer terminal button and an external power supply terminal button, which can be selected through the selector switch.

The panel also has a central zero meter head that can be connected to the large indicator surface, and at the same time, disconnect the dedicated socket for the internal indicator meter. If the external indicator meter is selected appropriately, the sensitivity can be improved. (At this time, the built-in amplifier and adjustment buttons still work)

The internal battery voltage can be checked at any time through the meter on the panel, so that the exhausted battery can be detected and replaced in time.

Main usage:

1: Measurement of the actual resistance of metal rods, sheets or cable conductors.

2: Check welding quality of current busbar, metal shell, etc

3: Calibration and adjustment of low resistance standard, high current shunt, power type resistor, etc

4: Switches, determination of electrical contact resistance

5: DC resistance test and heating experiment of various motor and transformer windings

Technical parameters

1: The reading range 0.01μΩ ~ 1111.10 Ω points 7 range is given

2: Table of grade indexes for different measurement limits of a bridge

3: Range factor The grade index C expressed as a percentage of the effective range

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