Samson Media 7 5007-1, Mounting And Operating Instructions

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EB 9510 EN 8-3
Operation
Device arrangement for liquid level measurement
− Fig. 8-2, diagram 1: measurement on cryogenic tanks
− Fig. 8-2, diagram 2: measurement on pressure vessels with condensing or non-condens -
ing pressure reserve. The additional height z is included in the measurement. As a result,
this height (z) must be as low as possible.
− Fig. 8-2, diagram 3: measurement on open vessels with the meter located in a low posi -
tion. The compensation height K can be as large as required depending on the condi-
tions in the plant.
h
H
z
h
H
h
K
H
Y
+ – + – + –
Diagram 1 Diagram 2 Diagram 3
h Measured height
H Measuring range
z Additional height
K Compensation height
Fig. 8-2: Liquid level measurement · Arrangement of devices (illustration with SAMSON valve block)
8.2.1 Density calculation in the tank – approximation method 0.1
In the filling level mode, the liquid and gas density can be calculated manually or automati -
cally. The first implementation of the automatic density calculation is based on an approxi -
mation method with a tolerance of ±10 %. In this device version, it serves as orientation.
Note