How to Troubleshooting  4 -20 mA Current Loops with Loop Calibrator?
Introduction Special-purpose electronic test instruments called loop calibrators are manufactured for the express purpose of 4-20 mA current loop circuit troubleshooting. These versatile instruments are generally capable of not only measuring current, but also sourcing current to unpowered devices in a loop, and also simulating the operation of loop-powered 4-20 mA transmitters. A very popular loop calibrator unit is the Altek …
How to Troubleshooting  4 -20 mA Current Loops with Loop Calibrator? Read More »