Siemens SITRANS LR250 Operating Instructions Manual page 35

Pressure applications
Danger of injury or poisoning.
It will be necessary to use PTFE tape or other appropriate thread sealing compound, and to
tighten the process connection beyond hand-tight. (The maximum recommended torque for
Threaded versions is 40 N-m (30 ft.lbs.) See Flanged versions (Page 37) for FEA
recommended torque values.)
Note
• On devices with a removable head, there is no limit to the number of times a device can
be rotated without damage.
• When mounting, orient the front or back of the device towards the closest vessel wall or
obstruction.
• Do not rotate the enclosure after programming and vessel calibration, otherwise an error
may occur, caused by a polarity shift of the transmit pulse.
SITRANS LR250 (FOUNDATION FIELDBUS)
Operating Instructions, 08/2014, A5E32221411-AC
WARNING
Installing/mounting
4.4 Installation instructions
35