User's Manual

Sensus Commercial Meter Installation
2. 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 module must line up with the INLET label on the
Sensus meter case.
3. Verify the bottom of the ERT module and the top of the meter meet. The ERT housing should rest on top
of the meter without gaps.
Warning Do not press down on the commercial 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
commercial gas ERT module's shaft back and forth until the ERT module wriggler aligns with the meter's
drive teeth.
4. Align the ERT module with the index mounting holes. Verify the index drive dog intersects with the ERT
module's wriggler.
5. Install the ERT mounting screws (SCR-0062-003, see Installation Prerequisites on page 14 for screw
information). Turn each screw 1/4 to 1/2 turn after it contacts the index assembly.
6. Install the index cover.
• For index covers with flat-surface screw holes, use screws (SCR-0062-002), flat washers (WSH-0020-
005), and cork washers (WSH-0032-001).
TDC-0823-014 100G Series Gas ERT Module Installation Guide, Direct Mount 79
Proprietary and Confidential