When properly specified, socket testers provide a fast and effective solution to identify potentially unsafe installations and wiring faults. They can be particularly useful as a service tool for identifying potentially unsafe conditions prior to installing new plant and equipment. Socket testers are not an alternative to the full verification of wiring installations, however they are an essential tool for all maintenance teams as a first line indicator.
Annual calibration of test and measurement equipment is recommended by the vast majority of manufacturers and it may also be appropriate to carry out more frequent calibration should test results start to fluctuate. However, the processes behind loss of accuracy are often little understood and they are influenced by a wide array of factors. This article aims to explain the influences behind variations in accuracy and clarify the actual calibration process your tester will undergo when it comes to our laboratory.