User's Manual

National/Lancaster Meter Installation
TDC-0823-005 100G Datalogging Installation Guide - Direct Mount 47
Proprietary and Confidential
5. For indexes with legs (mounting slots), screw one 10 - 20 x 3/8" screw (SCR-0017-001, see Installation
Prerequisites on page 7 for screw information) into the right index mounting post one or two turns. Do not
completely tighten the screw.
6. Place the right index mounting screw slot under the screw head. Do not completely tighten the screw.
7. Carefully slide the index drive post into the endpoint wriggler. Verify positive engagement of the index
wriggler to the endpoint drive dog. (The following photos show index/wrigglers with positive
engagement.)
Caution Verify the index drive slot engages with the 100G Datalogging gas
endpoint wriggler. Failure to mate the endpoint wriggler with the index drive post
(or slot) can cause binding and lead to poor registration or meter failure.
8. Install and tighten the left index mounting screw (for indexes with either mounting screw slots or holes).
Tighten the right index mounting screw. Tighten each index mounting screw evenly.
9. Slide the endpoint cover over the index and housing. The endpoint label should be clearly visible and
easily read.