Installing/mounting
4.4 Installation instructions
SITRANS LR250 with mA/HART
36 Operating Instructions, 10/2019, A5E32220602-AG
Flange bolting instructions:
1. Use cross-pattern sequence as shown.
2. Check uniformity of the flange gap.
3. Apply adjustments by selective tightening if required.
4. Torque incrementally until desired value is reached.
5. Check/re-torque after 4 to 6 hours.
Recommendations for flange bolting:
● Check bolts periodically, re-torque as required.
● Use new lens, O-ring and spring washers after removal from installation.
For instructions on replacing the lens, see Part replacement (Page 163).
See Flanged Horn with extension (Page 194), Raised-Face Flange per EN 1092-1
(Page 224), Flat-Face Flange (Page 226), and PTFE Flanged encapsulated antenna
(3"/DN80/80A sizes and larger) (Page 200) for dimensions.
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