User's Manual

Elster American and Itron Commercial Meter Installation
5. Install four mounting screws included with the ERT module and tighten them in an alternating diagonal
sequence. For metal mounting plates with a flat screw surface, use ERT module mounting screws with
internal tooth washers. For plastic mounting plates with tamper screw cups, use ERT module mounting
screws (use O-ring AS-568A-011, 5/16" ID x 7/16-inch OD for a maximum moisture seal). Turn each
screw 1/4 to 1/2 turn after it contacts the mounting plate. If you have access to a torque driver, tighten
mounting screws to 20-25 inch-pounds.
6. Place new tamper seals over screws (if the mounting plate has tamper seal cups). Press the tamper seals
into place with an 11/32-inch nut driver or a similar blunt tool.
To attach the index and cover assembly on the meter and ERT module
1. Place the mounting plate gasket (previously removed) on the index cover mounting plate. Align the gasket
and index cover mounting plate screw holes.
2. Place the index and cover assembly on the index mounting plate. (The index must face the direction it
faced before removal.) Attach the index/cover assembly on the mounting plate using original 1/2-inch
index screws.
• Insert one screw and tighten two turns to hold it in place on the mounting plate.
• Insert the second mounting screw and tighten until secure.
• Completely tighten the first mounting screw.
Tighten each index cover mounting screw.
3. Install new tamper or wire seals. If tamper seals are installed, press into place with an 11/32-inch nut
driver or similar blunt tool. Crimp the seal if utility-approved wire seals are installed.
TDC-0823-014 100G Series Gas ERT Module Installation Guide, Direct Mount 64
Proprietary and Confidential