User's Manual

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REX Meter
3 Operating Instructions Technical Manual
3-2 30 November 2006
Figure 3-2. LCD regions
Display Quantity. This 6-digit display quantity on the LCD shows either
metered quantities or other displayable information, depending upon how the
REX meter was programmed either at the factory or using MAS. See Appendix
B, “Display,” for more information.
The display quantity digits are used to display the following:
■ LCD segment test (all display segments turned on)
■ operational errors and status
■ kWh and kW values
When displaying energy values, the LCD can be configured to display 4, 5, or 6
digits. The REX meter displays leading zeros if the measured energy value has
fewer digits than the number for which it is programmed.
Real Energy Indicators. The real energy indicators pulse at a rate
proportional to kWh consumption. The center square indicator pulses to
indicate pulses of K
h
. Each square indicator pulse (turns on and off) indicates 1
K
h
. A single transition (on-to-off or off-to-on) indicates ½ K
h
.
The arrows toggle for each K
e
. This means that a single transition of an arrow
pulse (off-to-on or on-to-off) represents K
e
(see Table 2-1 for a list of K
e
based
on meter form). The left arrow indicates energy being received, and the right
arrow indicates energy being delivered.
Display quantity
Real energy
indicators
Power/energy
unit identifier
Rate
identifier