DC double arm bridge manufacturer

Yangzhou Xuming Electrical Technology Co., Ltd. is located in Liubao Town, Yangzhou City, Jiangsu Province, which is an advanced town for the development of electrical industry in Jiangsu Province. The company's main products include: AC/DC test transformers, variable frequency series resonant devices, high-voltage switch mechanical characteristic testers, DC resistance testers, transformer capacity parameter testers, high current generators, circuit resistance testers, high-voltage wireless phase analyzers, DC high-voltage generators, polyimide films, mica plates, 3240 epoxy plates, safety sliding contact wires, rigid sliding contact wires, asbestos rubber tubes, environmentally friendly dust removal bags, and other related products. The company specializes in the production and processing of these products and their supporting products, and has a complete and scientific quality management system. Yangzhou Xuming Electrical Technology Co., Ltd. has been recognized by the industry for its integrity, strength, and product quality. Welcome friends from all walks of life to visit, guide and negotiate business.

DC double arm bridge manufacturerThe main purpose is to measure the direct current resistance of (0.0001-11) Ω, the contact resistance of switches and electrical appliances, the winding resistance of various types of motors and transformers, the resistivity of metal conductors, wire resistance, DC shunt resistance, and temperature rise tests.

DC double arm bridge manufacturerProduct Parameters:

1. Total effective range: (0.001-11) Ω, divided into five ranges
The reference temperature of the bridge is (20 ± 1.5) ℃, and the reference relative humidity is 40% -60%.
The nominal operating temperature of the bridge is (20 ± 1.5) ℃, and the nominal operating relative humidity is 25% -80%.
4. Under the conditions of reference temperature and reference relative humidity, the allowable error limit of each measurement limit of the bridge is.
Elim=±C%（RN/10+X）•••••••••••••（1）
In the formula: Elim - allowable error limit, Ω;
X-scale dial indication, Ω.
5. The limits, effective ranges, grade indices, and reference values of the bridge are shown in Table 1.
Table 1
Range factor Effective range (Ω) Grade index (C) Reference value RN (Ω)
×100 1-11 0.2 10
×10 0.1-1.1 0.2 1
×1 0.01-0.11 0.2 0.1
×0.1 0.001-0.011 0.5 0.01
×0.01 0.0001-0.0011 1 0.001
6. Under reference conditions, if the temperature exceeds the reference temperature range, but within the nominal operating range, the additional difference caused by temperature changes should not exceed the corresponding level index value.
7. Under reference conditions, if the humidity exceeds the reference relative humidity range, but within the nominal relative humidity range, the additional error caused by humidity changes should not exceed 20% of the corresponding level index value.
The working power supply of the bridge is 1.5V (with a built-in power supply of 1.5V and 6 parallel connected batteries [R20]), and the working power supply of the transistor amplification instrument is 6F22 and 9V (3 parallel connected batteries).
9. Equipped with a transistor zeroing device, the sensitivity can be adjusted. Within the measurement range of (0.01-11) Ω, at the specified voltage, when the measured resistance changes within a limit error, the deviation of the zero point indicator is greater than or equal to one grid, which can meet the requirements of measurement accuracy. The sensitivity should not be too high, otherwise it is difficult to balance and the measurement time of resistance should not be too long.

The company's main products include: AC/DC test transformers, variable frequency series resonant devices, high-voltage switch mechanical characteristic testers, DC resistance testers, transformer capacity parameter testers, high current generators, circuit resistance testers, high-voltage wireless phase analyzers, DC high-voltage generators, polyimide films, mica plates, 3240 epoxy plates, safety sliding contact wires, rigid sliding contact wires, asbestos rubber tubes, environmentally friendly dust removal bags, and other related products. The company specializes in the production and processing of these products and their supporting products, and has a complete and scientific quality management system.