Levelflex FMP55
12 Endress+Hauser
Measuring system General notes on probe selection
• For interface measurement, ideally coax probes or rod probes in a bypass/stilling well are used.
• Coax probes are suited to liquids with viscosities of up to approx. 500 cst. Coax probes can measure
most liquefied gases, as of a dielectric constant of 1.4. Moreover, installation conditions, such as
nozzles, tank internal fittings etc., have no effect on the measurement when a coax probe is used.
A coax probe offers maximum EMC safety when used in plastic tanks.
• Rod or rope probes for free installation in the tank not recommended.
Rope probes may also be used in a bypass/stilling well, if the distance to the ceiling is too small for
mounting a rod probe and if it can be excluded that the rope or end-of-probe weight touches the
wall of the tube (diameter large enough, precisely vertical tube).
Probe selection
The various types of probe in combination with the process connections are suitable for the following
applications
2)
:
Levelflex FMP55
Type of probe Rod probe Rope probe Coax probe
A0011357
A0011358
A0011359
Feature 060 - Probe: Option: Option: Option:
CA 16 mm (PFA>316L) NA 4 mm (PFA>316) UA ... mm (316L)
CB 16 mm (PFA>316L) ND 1/6" (PFA>316) UB ... inch (316L)
Max. probe length 4 m (13 ft) 10 m (33 ft) 6 m (20 ft)
For application Level and interface measurement in liquids
When using the remote sensor version → 41, only probe lengths up to
7 m (23 ft) can be ordered.
2) If required, rod and rope probes can be replaced. They are secured with Nord-Lock washers or a thread coating. For further information on
service and spare parts please contact the Endress+Hauser service.
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