Micro-ohmmeter, or more commonly known as ductor tester, is a piece of testing equipment that is widely used for accurate measuring of contact resistance of circuit breakers, connectors, bonds, switches and all other applications that require low resistance readings. “Ductor” was the name given to the low resistance ohmmeter produced by the largest ohmmeters manufacturer – Megger. This simple testing equipment is very popular in many industries and its simple capability is key. The ductor tester measures the resistance at the micro-ohm and milli-ohm levels. It is mostly used for verifying if electrical connections are correctly made or connected.

Ductor testers are also able to detect several problems, such as loose connections, damaged contact surfaces, contaminated/corroded contacts and tension on bolted joints. For contacts that carry big amounts of electric current, using these testers is of utmost importance, because higher contact resistance than the suggested can lead to big losses of current capacity. Today, there are many popular manufacturers of low resistance testing devices, but we provide you with two of the best models of ductor tester for sale by AEMC that worth your money.

AEMC 6240

Although this is an older model of the 6250, it is still one of the top low resistance testers that can be found on the market. This ductor tester for sale is also adjusted for both field use and plant maintenance and it offers an exceptional accuracy. Using a 4-lead Kelvin method of testing, the AEMC 6240 is able to measure extremely low resistance to 0.25%. Its resistance measurement ranges from 1µΩ to 400Ω and with test current selection up to 10A. Especially designed to conduct tests on all sorts of materials, the 6240 can be used in a variety of applications: component measurement, wire to terminal connections, aircraft bonds, contact resistance measurements on switches and breakers, electrical cable resistance measurement and many others.

AEMC 6250