Pressure and Temperature Transmitters (AEM01)

Learn about electronic transmitter maintenance, their functions, adjustments, inspections, and repairs.

Prerequisites

This program is designed for participants familiar with process and control principles as well as basics of digital electronic theory and test procedures.

Description

This lesson introduces electronic transmitter maintenance focusing on pressure and temperature transmitters. The lesson describes the components of a typical pressure or temperature transmitter, their functions, adjustments, inspections, and repairs. Procedures for isolating the faulty component in a transmitter are also demonstrated.

Objectives

Identify components in a disassembled electronic differential pressure or electronic temperature transmitter. Test the power supply for the transmitter in an electronic pressure transmitter. Adjust the sensor zero and replace the electronics module of the pressure transmitter. Isolate malfunctions to either the sensor or circuitry portion of a differential pressure transmitter. Verify that a sensor is properly grounded. Swap circuit boards in a differential pressure transmitter. Replace the sensor assembly of a DP transmitter. Identify the faulty component in a thermocouple transmitter. Test outputs and repair an RTD. Swap a defective board to calibrate a malfunctioning RTD.