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CS451/CS456 Submersible Pressure Transducer
8
7. Installation
If using
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(p. 11)
,
(p. 12)
.
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(p. 2)
, for a
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tutorial.
7.1 Installation Considerations
7.1.1 Vent Tube
The CS451/CS456 is designed for water level measurements. Typical
applications include agricultural water level/flow, water wells, lakes, streams,
and tanks. If the device is to be installed in a liquid other than water or in
contaminated water, check the compatibility of the wetted material. The CS456
should be used in harsh water applications, including salt water.
A vent tube incorporated in the cable vents the sensor diaphragm to the
atmosphere. This eliminates the need to compensate for changes in barometric
pressure. To prevent water vapo
u
r from entering the inner cavity of the sensor,
the vent tube opening terminates inside a desiccant tube.
The desiccant tube is shipped with a black cap to cover the
vent hole. This cap MUST be removed prior to installation.
Before installing the sensor, check the desiccant and replace it if the desiccant
is green instead of orange.
Until August 2019, the CS451/CS456 used blue desiccant that
turned pink when it became saturated.
The desiccant tube must always be attached to the CS451/CS456.
7.1.2 Appropriate Water Depth
The CS451/CS456 must be installed below the water at a fixed depth. This
depth should be chosen so the water pressure will never exceed the transducer
overpressure range (twice the pressure range).
The output reading will not be correct, and the transducer
can be damaged if pressure is excessive (twice the pressure
range).
Pressure can be converted to feet of fresh water using the following
conversion:
1 psi = 2.31 feet of water
For example, the maximum depth with a pressure range of 0 to 7.25 psig is
16.748 feet of water.
CAUTION
NOTE
CAUTION