User's Manual

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30 November 2006 5-1
REX Meter
Technical Manual 5 Testing
5 Testing
Meter Self Test REX meters are factory calibrated and tested to provide years of trouble-free
service. No field calibrations or adjustments are required to ensure accurate
operation of the meter. It is normal, however, to test installed REX meters
periodically to ensure accurate billing. Testing procedures are the same
regardless of the type of meter being tested.
Additionally, the REX meter performs a self test every 24 hours and after any
power restoration to determine if it is operating properly. The self test ensures
that the REX meter is functioning properly and its displayed quantities are
accurate. Any errors encountered will be displayed on the LCD.
The self test incorporates a series of electronic analyses verifying many aspects
of the REX meter. After any power restoration, all of the LCD segments will be
turned on briefly before beginning the display sequence. The following is a listing
of the specific tests performed during a self test:
■ verification of the configuration data and checksums
■ verification of normal microcontroller function
Error and Status Codes
Error codes indicate a problem exists with the meter that may be affecting billing
data. Elster Electricity does not recommend operating the REX meter when it is
displaying an error code.
Status codes indicate the present operating conditions; status codes do not
indicate a problem.
Error codes. Error codes are displayed on the LCD by an E and a 5-digit code.
The code indicates the specific condition affecting the meter operation. See
Figure 5-1 for a sample error code displayed on the meter LCD. Table 5-1
describes the different error conditions and their associated codes.
Error codes are appended to the display list automatically when the condition
causing the error code exists. Error codes can be displayed in combination
(E00101, for example), indicating that more than one error condition has been
detected. In most cases, the meter will need to be returned to the factory for
repair or replacement.
Technical
Manual
REX
Meter