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Chapter 2 __________________________________________________________ Product Overview
VAISALA_______________________________________________________________________ 45
Submersible Water Level Sensor
0406-051
Figure 32 Submersible Water Level Sensor PR-36W
Submersible Water Level Sensor PR-36W determines the water level
by measuring the water pressure above the submerged sensor in
reservoirs, lakes and rivers. The PR-36W pressure sensor is a high
stability piezoresistive device designed for use in transmitters, where
accuracy and stability are essential. The sensor is selected after severe
testing under pressure and temperature. The sensing component is a
micro-machined silicon chip of high sensitivity mounted in a floating
arrangement. An independent temperature sensor is integrated on the
surface of the silicon chip. The pressure signal compensation uses a
mathematical model based on polynomial approximation, which
provides almost perfect compensation over the operating temperature
range.
The user can, via RS-485 interface and using a special adapter cable, set
the zero and gain of the transmitter by simple software programming.
This means that the sensor can be configured by the user for different
ranges at any time.
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