ITRON Centron, Technical Reference Manual

Page: 39 / 100

Operation: C1SR Version
CENTRON® Meter Technical Reference Guide 29
The following information is sent to the personality module from the base metrology board:

Line voltage

Reference voltage

Energy flow direction

Energy pulse data

Line frequency
The C1SR contains contacts on the module board, located at the 12 o'clock position behind
the LCD, for resetting the energy register and tamper counters. This can be accomplished
with the ZRO-C2A Resetter.
The C1SR uses a unique module identification number (ERT ID), provided by Itron. This
ID number is contained in each message transmission and is used by the handheld and
billing system to determine meter identity and location. The ERT ID number, which is
contained on a bar-coded label, is placed on the LCD housing directly above the LCD
display.
C1SR Display
The C1SR personality module is only available with a liquid crystal display, LCD. The LCD
is automatically adjusted for contrast over the operating temperature range.
Figure 26: C1SR LCD
This module can be configured to display either four or five digits of energy consumption
and will rollover at 100,000 kWh for both self-contained (Form 1S, 2S, 12S, 25S) and
transformer rated meters (3S, 4S). The self-contained meters can be programmed to display
normal kWh consumption (5X1 register configuration) or tens of kWh consumption (4X10
register configuration). If the C1SR is programmed for a 4x10 display, a “Mult by 10" label
is placed on the module to the left of the LCD display. Thus, the actual energy consumption
is obtained by multiplying the value on LCD display by 10.
The transformer rated meters can be programmed to display either a 5xTR or 4xTR. In order
to determine the actual energy consumption, the display reading needs to be multiplied by
the transformer ratio (TR). If the transformer ratio is 1, then the reading on the display is the
actual energy consumption.
The LCD display contains an electronic load indicator (or watt disk emulator). The disk
emulator is three square segments in the lower right-hand corner of the display, which scroll
in the direction of energy flow.