Input. ENDRESS+HAUSER Levelflex FMP55

Measured variable

Measuring range

Blocking distance

Levelflex FMP55

Input

The measured variable is the distance between the reference point and the product surface.

Subject to the empty distance entered "E" the level is calculated.

Alternatively, the level can be converted into other variables (volume, mass) by means of linearization (32 points).

The following table describes the media groups and the possible measuring range as a function of the media group.

The maximum measuring range is:

• for rope probe in bypass or stilling well up to 10 m (33 ft)

• for rod probe in bypass or stilling well up to 4 m (13 ft)

• for coax probe up to 6 m (20 ft)

• Reduction of the max. possible measuring range through buildup, above all of moist products.

• Due to the high diffusion rate of ammonia it is recommended with gas-tight bushing

2)

for measurements

in this medium.

The upper blocking distance (= UB) is the minimum distance from the reference point of the measurement

(mounting flange) to the maximum level.

R

SD

UB

100%

E

F

LN

Measuring frequency spectrum

0%

A0011279

R = reference point of measurement

LN = probe length

UB = upper blocking distance

E = empty calibration (= zero)

F = full calibration (= span)

SD = safety distance

Blocking distance (factory setting):

• with coax probes: 0 mm (0 in)

• with rod and rope probes up to 8 m (26 ft): 200 mm (8 in)

• with rod and rope probes exceeding a length of 8 m (26 ft): 0.025 * (length of probe)

The specified blocking distances are preset on delivery. Depending on the application these settings can be changed.

Within the blocking distance, a reliable measurement can not be guaranteed.

A safety distance SD can be defined in addition to the blocking distance. A warning is generated if the level rises into this safety distance.

100 MHz to 1.5 GHz

2)

8 for FMP55 optionally available

Endress+Hauser