Endress+Hauser Micropilot FMR56 - Integrated Air Purge Connection for FMR57; Vessels with Heat Insulation

Micropilot FMR56, FMR57 FOUNDATION Fieldbus Installation
Endress+Hauser 33
6.3.6 Integrated air purge connection for FMR57
In extremely dusty applications, the integrated air purge connection can prevent clogging
of the antenna. Pulsed operation is recommended.
1
A0016932
 11 Micropilot FMR57 with air purge connection
1 Air purge connection NPT¼ or G¼
Pressure range of the purge air
• Pulsed operation:
max. 6 bar (87 psi)
• Permanent operation:
200 to 500 mbar (3 to 7.25 psi)
Connection of the purge air
• Tools:
– 13mm (G 1/4) open-end wrench
– 14 mm (NPT) open-end wrench
– 17 mm ( NPT "adapter") open-end wrench
• min. torque: 6 Nm (4.4 lbf ft)
• max. torque: 7 Nm (5.2 lbf ft)
Make sure to use dry purge air.
In general, air purging should only be used as much as necessary, since too much air
purging may cause mechanical damage (abrasion).
6.4 Vessels with heat insulation
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2
A0019142