High sensitivity from digital resistance test unit

Edited by the Engineeringtalk editorial team Oct 26, 2001

H.Tinsley's QJ84 provides resistance measurement over seven selectable ranges from 20 mOhms to 20 kOhms, and high sensitivity makes it suitable for precision measurement of low resistance

Precision instrument specialist H.Tinsley has introduced the QJ84 that provides resistance measurement over seven selectable ranges from 20 mOhms to 20 kOhms.

High sensitivity makes it suitable for precision measurement of low resistance, particularly in laboratory and test environments, and its scope covers cable joints, earth bonds, switches, motors, transformers, generators, conductor resistance and other applications.

The unit has a maximum test current of 1 amp and provides resistance measurement over the seven selectable ranges of 20 mOhms, 200 mOhms, 2 Ohms, 20 Ohms, 200 Ohms, 2 kOhms and 20 kOhms with accuracy to +/-0.05 percent.

Read-out is on a 4.5 digit LED.

A four terminal measurement method eliminates errors that would normally occur due to test lead resistance, and the circuitry used achieves measurement much faster than traditional bridge techniques.

Internal digital calibration is provided and each unit is supplied with a certificate of conformity.

Safety features provide protection when measuring inductive devices such as transformers and electric motors, and the instrument is supplied with Kelvin type test leads.

Established in 1904, Tinsley is UKAS accredited and manufactures to ISO9001 quality standards.

The company produces a wide range of high quality precision instrumentation that it supplies to world markets.