Flanged Versions - Siemens SITRANS L Series Compact Operating Instructions

1. Before inserting the device into its mounting connection, check to ensure the threads are
matching, to avoid damaging them.
2. Simply screw the device into the process connection, and hand tighten, or use a wrench.
4.4.2

Flanged versions

NOTICE
Improper materials
The user is responsible for the selection of bolting and gasket materials (except for Flanged
encapsulated antenna) which will fall within the limits of the process connection and its
intended use, and which are suitable for the service conditions.
Special Instructions for PTFE flanged encapsulated antenna only
Note
● Use spring washers
● Lens assembly acts as integral gasket, no other required
● Use recommended torque values for tightening bolts
Flange bolting: recommended torque
Pressure class
ASME B16.5, Class 150
EN1092-1, PN16 /
JIS B 2220, 10K
SITRANS LR250 with mA/HART
Compact Operating Instructions, 11/2019, A5E48453192-AA
Nominal pipe size (NPS) Number of bolts
2"
3"
4"
6"
DN50/50A
DN80/80A
DN100/100A
DN150/150A
Installing/mounting
4.4 Installation instructions
Recommended torque
(Nm)
4 30 – 50
50 – 70
8 40 – 60
70 – 90
4 30 – 50
8
60 – 80
25