Mode Of Operation - Huba Control 711 Mode D'emploi

Mode of operation

The pressure of the medium acts on the keramic sensor which is deflected to
transmit the pressure to the piezo-resistive bridge in the measuring sensor.
Every sensor is compensated for changes in temperature and operates within
a wide temperature range.
The output signal of the sensor is fed to an electronic circuit which converts
it into a standard voltage and current output. The hydrostatic pressure which
is proportional to the submersion depth acts on the diaphragm of the sensor.
This pressure is compared with the atmospheric pressure which acts on the
other side of the sensor by means of the vent pipe in the connecting cable
(at relative pressure).
Installation
The level pressure transmitter
711 is installed hanging down-
wards on the cable. In moving
media, the transmitter must
be fixed to prevent measuring
errors. This can be done with a
guide tube. Make sure that the
inlet openings on the protective
cap of the level pressure trans-
mitter are not soiled in order to
guarantee perfect functioning.
h - Fluid level
- Measurement reference height
Calibration
The transmitter has been calibrated to the measuring range at the factory and
cannot be re-calibrated.
Maintenance
The level transmitter requires no maintenance.
18
Huba Control AG - Type 711 - Edition 10/2018 - 119052
h
Sensor with Sensor
protection with metal
cover protection
cage