User's Manual

Installation
2-2 CENTRON Meter Technical Reference Guide
Unpacking
As with all precision electronic instruments, the meter should be handled with care
in an outdoor environment. Follow these precautions when handling the meter:
• Avoid damaging the meter base, cover, reset mechanism (if supplied), and
optical connector (if supplied).
• When handling personality modules, grip the circuit board by its edges. Do not
touch the liquid crystal display.
Selecting a Site
The meter is designed and manufactured to be installed in an outdoor
environment, at operating temperature ranges between -40° C and +85° C (-40° F to
+185° F). Operation in moderate temperatures increases reliability and product
life.
When using a Demand, TOU, or Load Profile meter where the line frequency is not
stable, SchlumbergerSema recommends using either the C1ST or C1SL meter
version with Crystal Time synchronization if a clock is needed (TOU or Load
Profile).
Installing the Meter into Service
Install the meter base using standard meter installation practices.
The current and potential terminals extend as blades, or bayonets, from the back
of the meter. The meter is plugged into the socket so that the bayonets engage the
main socket jaws that connect to the service lines. Clamping pressure on the
bayonets is provided by the heavy spring pressure of the socket jaws. In some
heavy-duty sockets, jaw clamping pressure is provided by a handle or wrench.
On meters equipped with LCD displays, verify register operations by observing the
display:
• LCD displays the correct number of digits (4 or 5).
• If the test mode annunciator is flashing, depress the Test mode button to
return the meter to the Normal mode (C1S D/T/L only).
• If the register only displays a Segment Test (all display items shown) and
flashes “CNTRON”, the register has not been programmed.
• Verify that no errors are displayed.
Programming the C1SD,T,L Meter
The personality module should be powered prior to programming. The module can
be programmed using the optical connector. The default communications rate
when programming through the optical tower is 4800 baud; 9600 baud is
selectable. Refer to PC-PRO+ documentation for detailed programming
information.