Product Resources

Use any of these filters to locate documents.

By Download Type:
By Product Type:
Clear fields
No downloads found for that criteria. Please try again.

Newsletters

Martel Matters Newsletter – 2 Wire or 4 Wire?

Loop calibrators are the most common calibration and troubleshooting tool used in the instrumentation field. A loop calibrator normally can generate and measure the 4 to 20 milliAmp (mA) signal used in instrumentation loops, hence, the name. So what is the difference between 2 Wire and 4-Wire?