Using Viatran's Field Calibration Feature

An important feature of many Viatran pressure transmitters is the internal field calibration (cal) signal. This feature allows quick field set-up because the transmitter is not removed from service and a precise pressure source is not required. The field cal signal “simulates” a known pressure that allows for zero and span adjustment; and in turn, ensures accurate transmitter measurements. It can then be used for calibrating data acquisition equipment and safety limit alarms, and also for ranging units to read lower pressures at Full Scale Output. This Tech Note explains how the calibration feature works and how to use it.