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.
‘Wireless’ has become a buzz word over the last 10 to 15 years, suggesting speed, efficiency and modernity. Whilst these advantages remain somewhat ill-defined, it is certain that various methods of wireless communication have filtered onto an ever-increasing array of products in domestic, commercial and industrial environments. The test and measurement sector is no exception. The benefits, however, can remain quite vague so this article aims to give both a basic overview of wireless technology and an insight into how it can help professional electricians and maintenance experts. Most wireless-enabled products on Test-Meter now use one of three principal methods: infrared, Bluetooth or Wi-Fi.