User's Manual

National (Lancaster) Meter Installation
Take note of the index drive rate shown on a top right dial on the index. The endpoint is programmed based
on the drive rate. National/Lancaster meter index drive rates are typically 2-cubic feet.
To program the ERT module assembly
1. Program the meter drive rate into the 100G series gas ERT module using the endpoint programming
device.
2. For all programming and Check Endpoint operations, hold the handheld programmer as close to vertical as
possible. For optimal results, keep the handheld programmer within 6 feet of the target ERT module.
3. Verify you have the correct programming mode (Fixed Network Mode, Mobile High Power Mode,
Mobile/Handheld Mode, or Hard to Read Mobile/Handheld Mode) for your application.
4. Programming parameters are based on the configuration file loaded into the ERT module programming
device. During programming, the 100G is set to the nearest 100 cubic feet; the last two digits (tens and
units) are programmed as zeros (0). After programming is complete, the ERT module assembly will read
to the nearest cubic foot.
Installing the 100G Gas ERT Module Assembly on the Meter
After you program the ERT module, complete the ERT module installation by installing the module on the
meter.
To install the 100G series gas ERT module on the meter
1. Align the black wriggler (1) so one of its four drive fins lines up with the meter's drive dog (2).
TDC-0823-014 100G Series Gas ERT Module Installation Guide, Direct Mount 54
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