User's Manual

Sensus Commercial Meter Installation
3. Align the ERT module so the screw holes line up with the meter's top screw holes. Carefully lower the
ERT on the meter so the wriggler's bars line up with the meter drive dog. Itron recommends installation
with one bar inserted into the meter drive dog's u-shaped gear.
Warning The INLET label on the commercial gas ERT must line up with the INLET label on the
Rockwell meter case.
4. Verify the bottom of the commercial gas ERT module and the top of the meter meet. The ERT housing
must rest on top of the meter without gaps.
Warning Do not press down on the ERT module if a gap exists between the ERT and the meter. A gap
may be caused by misalignment of the ERT wriggler and meter's drive teeth. Pushing down on the ERT
could damage the ERT wriggler or meter drive teeth. To eliminate a gap, slowly turn the ERT module's
shaft back and forth until the ERT wriggler aligns with the meter's drive teeth.
5. Align the index drive wriggler with the ERT module shaft and mounting holes. Attach the ERT module to
the meter using two SCR-0062-001 Itron mounting screws.
6. Attach the index cover with the original index cover screws.
7. Insert tamper seals in the tamper seal cups. Push tamper seals into place using an 11/32-inch nut driver or
similar blunt tool.
TDC-0823-014 100G Series Gas ERT Module Installation Guide, Direct Mount 83
Proprietary and Confidential