Endress+Hauser Levelflex FMP51 Modbus Technical Information page 35

Levelflex FMP51 Modbus
Endress+Hauser
Securing rod probes
• For WHG approvals: For probe lengths ≥ 3 m (10 ft) a support is required.
• In general, rod probes must be supported if there is a horizontal flow (e.g. from an agitator) or in
the case of strong vibrations.
• Rod probes may only be supported at the end of the probe.
1 Probe rod, uncoated
2 Sleeve bored tight to ensure electrical contact between the rod and sleeve!
3 Short metal pipe, e.g. welded in place
4 Probe rod, coated
5 Plastic sleeve, e.g. PTFE, PEEK or PPS
6 Short metal pipe, e.g. welded in place
 probe
8 mm (1/3")
12 mm (1/2")
16 mm (0.63in)
NOTICE
Poor grounding of the end of probe may cause measuring errors.
‣
Apply a narrow sleeve which has good electrical contact to the probe.
NOTICE
Welding may damage the main electronics module.
‣
Before welding: Ground the probe and dismount electronics.
mm (in)
 a [mm (inch)]
< 14 (0.55)
< 20 (0.78)
< 26 (1.02)
ø a
ø b
1
2
3
ø<25 (1.0)
3 (0.12)
»
4
5
6
 b [mm (inch)]
8.5 (0.34)
12.5 (0.52)
16.5 (0.65)
A0012607
35