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PRESSURE LEVEL SENSOR
Pressure sensor technology from Keller
Company
The water level is measured by a pressure transducer providing an electrical output proportional to the hydrostatic pressure of liquid related to the atmospheric pressure.
The sensor is generally constituted of a silicon piezoresistive or capacitive element.
The sensor is connected to the data
logger with a specific cable
MEASUREMENT SPECIFICATIONS
Transmission to the logger is of
4/20 mA current loop or of true binary type through a low speed (100 bits/sec)
synchronous serial transmission allowing « long distance »
communications.
CONDITIONS OF USE
The sensor has to be strongly fixed at the bottom or at a defined level in the river bed, linked to the data logger through the connecting cable. This one should be protected in its submerged part as well as in its aerial part against damages.
Normally with this type of device
the distance between the sensor and the logger can be more than 100m.
TECHNICAL SPECIFICATIONS
Range of measurement : 0 to
10 m.
Temporary over pressure :
minimum 2 times the maximum range
Accuracy : water level
? 0.5cm.
Working temperature : 0°C
to 70°C
Tracking speed : 1cm/sec
maxi.
Acquisition time : 3sec maxi.
Supply consumption : 6 mA
Removable connection cable
Length of cable to be defined when
ordering.