Measuring System - Endress+Hauser Levelflex FMP51 Technical Information

Measuring system

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.
10
General notes on probe selection
• Normally use rod or coax probes for liquids. Rope probes are used in liquids for measuring ranges >
10 m (33 ft) ( > 4 m (13 ft) for FMP52) and with restricted ceiling clearance which does not allow
the installation of rigid probes.
• 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.
Probe selection
The various types of probe in combination with the process connections are suitable for the following
2)
applications :
Type of probe
Feature 060 - Probe: Option:
AA
AB
AC
AD
AL
AM 1/2" (AlloyC)
BA
BC
BB
BD
Max. probe length
For application
measurement in liquids
1) Punched for process connections G1-1/2" or flange; multiple holes for 316L, one hole for AlloyC
2) Maximum probe length for indivisible rod probes: 4 m (13 ft)
Levelflex FMP51
Rod probe
A0011387
Option:
8 mm (316L) LA 4 mm (316)
1/3" (316L) LB 1/6" (316)
12 mm (316L) MB 4 mm (316) with
center rod
1/2" (316L) MD 1/6" (316) with
center rod
12 mm (AlloyC)
16 mm (316L)
divisible
0.63 in (316L)
divisible
2)
10 m (33 ft) 45 m (148 ft)
level and interface level and interface
measurement in liquids
Levelflex FMP51, FMP52, FMP54
Rope probe Coax probe
A0011388
Option:
UA ... mm (316L)
UB ... inch (316L)
UC ... mm (AlloyC)
UD ... inch (AlloyC)
6 m (20 ft)
level and interface
measurement in liquids
Endress+Hauser
1)
A0011359