Installing/mounting
4.5 Mounting instructions
SITRANS Probe LR with mA/HART
22
Operating Instructions, 05/2019, A5E32337711-AC
The end of the shield section or end of the horn should protrude a minimum of 10 mm (0.4”)
to avoid false echoes being reflected from the nozzle.
①
Locking ring secured by three 2 mm Allen set-screws
②
Threaded connection
③
Shield
Location on a manhole cover
●
A manhole cover is typically a covered nozzle with a diameter 610 mm (24”) or greater.
●
For optimum signal conditions, locate the antenna off-center, typically 100 mm (4") from
the side.
4.5
Mounting instructions
Note
Rotating the enclosure
Do not rotate the enclosure after programming and vessel calibration, otherwise an error
may occur, caused by a polarity shift of the transmit pulse.
1.
Before inserting SITRANS Probe LR into its mounting connection, check to ensure the
threads are matching, to avoid damaging them.
2.
Screw SITRANS Probe LR into the process connection, and hand tighten. For pressure
applications, it will be necessary to use PTFE tape (or other appropriate thread sealing
compound) and tighten the process connection beyond hand tight. The maximum torque
is 40 N-m (30 ft.lbs.).
3.
If you need to rotate the enclosure, use a 2 mm Allen key to loosen the three set screws
that secure the locking collar.
4.
Once the enclosure is in a suitable position, tighten the set screws.