Siemens 7ML5431 - Flanged Versions

Installing/mounting
4.4 Installation instructions
SITRANS LR250 with mA/HART
Operating Instructions, 10/2019, A5E32220602-AG
35
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
Nominal pipe size
(NPS)
Number of bolts
Recommended torque
(Nm)
ASME B16.5, Class
150
2"
4
30 – 50
3"
50 – 70
4"
8
40 – 60
6"
70 – 90
EN1092-1, PN16 /
JIS B 2220, 10K
DN50/50A
4
30 – 50
DN80/80A
8
DN100/100A
DN150/150A
60 – 80