Input; Measured Variable; Measuring Range; Blocking Distance - Endress+Hauser Levelflex M FMP43 Technical Information

Measured variable

Measuring range

Blocking distance

Used frequency spectrum

8

Input

The measured variable is the distance between the reference point (see Fig, → ä 26) and the product surface.
Subject to the input zero point empty distance "E" (see Fig., → ä 3) the level is calculated.
Alternatively, the level can be converted by means of linearization (32 points) into other variables (volume,
mass).
The measuring range spans the entire probe. The upper blocking distance set in the delivery status can be
adapted as required (see recommendations in the "Blocking distance" chapter). The specified accuracy of the
probe is reduced in the upper and lower range of the probe (table, → ä 16), especially when using media with
a smaller dielectric constant (DC < 7).
The upper blocking distance (= UB) is the minimum distance from the reference point of the measurement
(lower edge of process connection) to the maximum level. At the lowest part of the probe an exact
measurement is not possible, see "Performance characteristics", → ä 16.
reference point of
measurement
probe length LN
F = measuring span
E = empty distance (= zero)
UB = upper blocking distance
LN = probe length
Reference point of measurement, details → ä 26
The blocking distance is preset to 0.2 m when using rod probes. The blocking distance can be reduced when
the probe is installed flush with a wall or in a nozzle with a max. height of 50 mm.
When using a spray ball the blocking distance may not be smaller than 50 mm.
100 MHz to 1.5 GHz
UB
D
E
F
L
Levelflex M FMP43
max. 20 m /67 ft
remote display
100%
FHX40
0%
L00-FMP43xxx-17-00-00-en-001
Endress+Hauser