User's Manual

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30 November 2006 4-1
REX Meter
Technical Manual 4 Outputs
4 Outputs
Optical Pulse
Outputs
The REX meter contains a light emitting diode (called the test LED) on the face of
the meter, as shown in Figure 4-1. The test LED emits a pulse output that can
be used to test the REX meter in the shop or in the field without removing the
meter from service or breaking the seal. The source for the optical pulse output
is kWh of the metered quantity (see “Metered Energy” on page 2-3). The K
h
is
equal to 1.0 Wh per pulse.
Note: If the metered quantity is kWh net, the test LED output is kWh
delivered.
Figure 4-1. Test LED location
Test
LED
Meter nameplate
Technical
Manual
REX
Meter