The low-cost, portable calibrator model 420 was designed for calibration/test of DPMs, PLCs, transmitters, sensors or any other device requiring a 4–20-mA current loop signal. The 4-in.×2.5-in.×4-in. housing comes with a belt clip for ease of operation. Powered by a 9V transistortype battery, this unit operates down to 6V and can drive up to 300 ohm loads or sustain up to 7V burden of the load. The calibrator features a dual full-scale range of 19.99- and 25.0-mA. The calibrator features a 3-1/2 digit built-in display that will only turn on if the “loop” is closed (connected).
Company
Otek Corp.