User's Manual

Installation
CENTRON Meter Technical Reference Guide 2-3
Retrofitting with Personality Modules
CENTRON meters can be upgraded to increase functionality by changing the
Personality Modules.
To change or add a Personality Module:
1 Remove power from the meter.
2 Remove the outer (polycarbonate or glass) cover.
3 Remove plastic inner cover by holding the meter with both hands and applying
equal pressure on either side of the three and nine-o’clock positions (see
Figure 2.1). The inner cover is held in place by four plastic tabs on the meter
base.
Figure 2.1 Removing the Inner Protective Cover
4Do one of the following:
• If a mechanical register is present, remove the two leads that connect the
register to the metrology board (see Figure 2.2).
Mechanical registers built after June 2000 have two individual connectors
that are removed by pulling away from the metrology board.
Do not power ON the meter without the inner cover in place. Power the meter OFF before
removing the inner cover. Personality modules are sensitive to ESD damage. Take
appropriate grounding measures before retrofitting!