Endress+Hauser FOUNDATION Fieldbus Micropilot FMR51 Brief Operating Instructions page 16

Mounting
Information concerning nozzles
 3 Nozzle height for horn antenna, flush mount (FMR52)
Antenna
Horn 50mm/2"
Horn 80mm/3"
• For flanges with PTFE cladding: Observe the instructions for mounting cladded flanges
• The PTFE flange cladding normally acts simultaneously as a seal between the nozzle
and the device flange
• Please contact the manufacturer' s support service for applications with nozzles that are
higher than indicated in the table.
Mounting cladded flanges
Note the following for cladded flanges:
• Use the same number of flange screws as the number of flange bores provided.
• Tighten the screws with the necessary torque (see Table).
• Retighten after 24 hours or after the first temperature cycle.
• Depending on the process pressure and temperature, check and retighten the screws,
where necessary, at regular intervals.
The PTFE flange cladding normally acts simultaneously as a seal between the nozzle and
the device flange.
Flange size
EN
DN50 PN10/16
DN50 PN25/40
DN80 PN10/16
DN80 PN25/40
DN100 PN10/16
DN100 PN25/40
16
Maximum nozzle height H
500 mm (19.7 in)
500 mm (19.7 in)
Number of screws
4
4
8
8
8
8
Micropilot FMR51, FMR52 FOUNDATION Fieldbus
max
Tightening torque
45 to 65 Nm
45 to 65 Nm
40 to 55 Nm
40 to 55 Nm
40 to 60 Nm
55 to 80 Nm
A0016819
Endress+Hauser