Huba Control 711 Mode D'emploi page 17

Construction
The level sensor consists of a ceramic measuring cell (relative and absolute
pressure) with an amplified electronic and is adjusted in the requested pressu-
re range. The sensor, the electronic and the connection cable are hermetically
encapsulated in a stainless steel case. The measuring diaphragm is protected
from outside influences by a protection cover. A venting pipe is included in the
connection cable for the relative version. The sensor, the electronic and the con-
nection cable are placed in a hermetic encapsulated small case.
The wide temperature range of the level sensor is compensated.
CAUTION
Consider the chemical resistance of sensor, case, O-ring and connection cable
with the media.
Calculation of level
General level with relative pressure sensor:
Legend:
h level [m, mH
2
∆p measured relative pressure [Pa]
I measured current [mA]
Huba Control AG - Type 711 - Edition 10/2018 - 119052
O, ftH O]
2
ρ
density of media [kg/m
g acceleration of fall 9.80665 [m/s
FS measuring range of level transmitter [bar]
3 ]
]
2
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