Transducers, Annunciators, Recorders (AEM04)

Learn about the routine maintenance requirements and calibration procedures for transducers, recorders, and annunciators.

Prerequisites

This lesson is designed for participants familiar with calibration principles, process control, and control loops.

Description

This lesson teaches routine maintenance requirements and calibration procedures for transducers, recorders, and annunciators. The lesson provides a basic understanding of the functions of I/P, P/I, and E/I transducers, multipen and multipoint recorders, and annunciators. The lesson also outlines how to identify and troubleshoot problems in these instruments.

Objectives

Identify and describe the function of electronic transducers. Identify how I/P transducers work Identify troubleshooting steps for pneumatic and electronic function on I/P transducers. Identify the steps for continuity tests on I/P transducers. Identify coil replacement steps for I/P transducers. Identify calibration steps for P/I and E/I transducers, identify motor replacement steps for the chart drive on a multipen recorder. Identify the function of drive gears on a multipen recorder and how to clean them. Identify installation steps for a new drive cable on a multipoint recorder and check for proper operation. Identify the function of drive wire resistors on multipoint recorders and how to clean and inspect them. Calibrate multipen and multipoint recorders. Define the function of annunciators and troubleshoot them.