Martel Electronics manufactures beta calibrators, multi function calibrators, process calibrators, temperature calibrators,RTD Calibrators, thermocouple calibrators,voltage calibrators,loop calibrators,pneumatic calibrators and loop power supplies.

The Worldwide Source for Current Calibrators in the Process Industry
3 Corporate Park Dr., Unit 1
Derry, NH 03038
Toll Free: (800) 821-0023
Phone: (603) 434-1433
Fax: (603) 434-1653
sales@martelcorp.com

MS-420 Loop Calibrator

Mini-source Portable Loop Calibrator

Loop Calibrator Features

  • Calibrates Chart Recorders
  • Calibrates Panel Meters
  • Calibrates Data Acquisition Devices
  • Calibrates Other Process Instruments

The Loop Calibrator is a multi-purpose process loop tool that offers high accuracy in an ultra-small, rugged package.

A single pushbutton selects one of five current outputs (4, 8, 12, 16 or 20 mA), which can drive up to 300 Ohms, or can act as a 2-wire simulator with an external loop power supply of up to 30 VDC.

Each unit is provided with a 9V battery, NIST Certificate, and instruction manual.

Process Calibrator

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MS-420 Loop Calibrators
Request your Martel Beta Calibrator Catalog Request your Martel Beta Calibrator Catalog
Loop Calibrator Technical Support Documents, including User Manuals and Calibration Documents


Martel Calibrators
3 Corporate Park Dr., Unit 1
Derry, NH 03038
Toll Free: (800) 821-0023
Phone: (603) 434-1433
Fax: (603) 434-1653
Email: sales@martelcorp.com