English
| Contact Us For Quotation | Email: 464560351@qq.com | Whatsapp&Wechat:+8618620373879 |
Xtester-QJ84A DIGITAL D.C.RESISTANCE BRIDGE
Use and features
| 1 QJ84A digtal DC resistance bridge(hereinafter referred to as bridge),an upgraded and updated product of Kelvin bridge,is suitable for accurate measure of low DC resistance in industrial and mining enterprises,laboratories and workshops. |
2 Adopting 4¹/₂digit large digital LCD with mimic and clear reading and having a lowpower consumption,it is particularly suitable for use in strong light. |
3 Wide measuring range:7 ranges in 0~20kΩ,with minimal resolution of 1μΩ . |
4 As a novel half-bridge circuit is adopted and a precision resistance is used as reference, the technical indexes of measuring accuracy,temperature coefficient and yearly stability of the bridge are better than resistance measuring instruments using voltage stabilized components as reference. |
5 The measuring input loop adopts protective measures,so that inductive counter electromotive force is reduced and bridge safety is improved greatly for measurement of DC resistors with inductance. |
6 Adopting valve-controlled sealed lead acid battery,it is characterized through large capacity,being chargeable and a long life cycle,and is applicable particularly on occasions with no AC power supply and in the field. |
| 7.Adopting aluminum alloy casing,it is firm and durable and can be carried conveniently. |
Specifications
1 Environment requirement: Reference conditions:temperature 20℃±2℃,relative humidity 40%~60%. Standard conditions:temperature(5~35)℃ relative humidity 25%~75%. |
| 2 As for the parameters for each measurement range,please refer to table.1. |
3 Limiting values of Intrinsic error.please refer to table.2 |
| 4 Power supply:The bridge is delivered from the factory with the battery box on the back side containing two D type valve-controlled sealed lead acid batteries,which have 6V nominal voltage and 4 Ah capacity. |
