Levelflex FMP51, FMP52, FMP54 FOUNDATION Fieldbus Mounting
Endress+Hauser 35
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.
mm (in)
ø a
ø b
»50 (1.97)
1
2
3
»50 (1.97)
4
5
6
ø<25 (1.0)
3 (0.12)»
A0012607
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 a [mm (inch)] b [mm (inch)]
8 mm (1/3") < 14 (0.55) 8.5 (0.34)
12 mm (1/2") < 20 (0.78) 12.5 (0.52)
16 mm (0.63in) < 26 (1.02) 16.5 (0.65)
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.
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