User's Manual

National/Lancaster Meter Installation
TDC-0823-005 100G Datalogging Installation Guide - Direct Mount 46
Proprietary and Confidential
Note National/Lancaster meter indexes are available in different models:
Some National/Lancaster Meter indexes have index legs to mount the index on the meter or
endpoint. Some indexes have both legs and index mounting holes and some have just
mounting holes. Mounting methods are dependent on the index. Index types require different
mounting screws to attach the index to the 100G Datalogging gas endpoint housing (see
Installation Prerequisites on page 7). Indexes with legs must be mounted to the endpoint
housing mounting posts. Indexes with mounting holes must be attached to the endpoint
housing's bracket mounting posts.
Indexes with mounting legs Index with mounting holes
1 Bracket mounting posts (indexes with legs)
2 Housing mounting posts (indexes without legs)
If your index has legs with mounting screw slots, skip steps 3 and 4. If your index has mounting screw
holes in the index back plate (no legs), perform steps 3 and 4, and skip steps 5 and 6.
3. For indexes with mounting screw holes in the index back plate (no legs), use replacement index mounting
screws (SCR-0037-001 - see Installation Prerequisites on page 7). Place one screw into the index's right-
hand mounting screw hole.
Note National/Lancaster index mounting screws are thread-forming screws and
may require more torque.
4. Attach the screw to the endpoint housing's right-index mounting post just enough to hold the screw and
the right end of the index in place.