Micropilot FMR51, FMR52
Endress+Hauser 41
Mounting cladded flanges
• Use flange screws according to the number of flange holes.
• Tighten the screws with the required torque (see table).
• Retighten the screws after 24 hours or after the first temperature cycle.
• Depending on process pressure and process temperature check and retighten the screws at
regular intervals.
Usually, the PTFE flange cladding also serves as a seal between the nozzle and the device
flange.
Flange size Number of screws Recommended torque [Nm]
minimum maximum
EN
DN50/PN16 4 45 65
DN80/PN16 8 40 55
DN100/PN16 8 40 60
DN150/PN16 8 75 115
ASME
2"/150lbs 4 40 55
3"/150lbs 4 65 95
4"/150lbs 8 45 70
6"/150lbs 8 85 125
JIS
10K 50A 4 40 60
10K 80A 8 25 35
10K 100A 8 35 55
10K 100A 8 75 115
Installation in vessel (free
space)
Horn antenna (FMR51)
Alignment
• Align the antenna vertically to the product surface.
The maximum range may be reduced if the horn antenna is not vertically aligned.
• A marking at the flange (somewhere between the flange holes) or the boss enables alignment of
the antenna. This marking must be aligned towards the tank wall as well as possible.
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