User's Manual

CENTRON Meter Technical Reference Guide 8-1
Chapter 8 Testing, Troubleshooting, and Maintenance
This section provides information and instructions to help you test and maintain
the CENTRON meter. Topics covered include:
• Testing support features
•Energy testing
• Recommended testing procedures
• TOU schedule testing
• Field testing
• Troubleshooting (Fatal and non-fatal errors)
• Maintenance
Testing Support Features
Infrared Test LED
The CENTRON meter is equipped with an Infrared Test Light Emitting Diode
(LED) where each pulse represents a fixed value of watthour measurement. The
LED is located on the top of the meter as the meter is viewed from a typical
installation (see Figure 8.1). The pulse weight represented by the LED pulses is 1.0
watthour per pulse (Kh=1.0).
Figure 8.1 LED Location
Pulse Detector
An optional pulse detector is available for the CENTRON meter. The pulse detector
has an infrared pickup with 2 visible LEDs. When positioned over the CENTRON
light pipe, it will produce a visible flash when an infrared pulse is received from the
metrology. The right LED will flash once for each infrared Wh pulse while the left
Test Led