Campbell Scientific CS451/CS456 Pressure Transducer - Manual (Page 18)

CS451/CS456 Submersible Pressure Transducer
Air Gap
Standard and weighted
nose cone: 0.653 cm (0.257 in)
NPT fitting: 2.72 cm (1.07 in)
Weight: CS451: 0.17 kg (0.37 lb)
CS456: 0.10 kg (0.23 lb)
Cable: 0.421 kg/m (0.283 lb/ft)
25431 Split Mesh Grip
Accepts cable diameter: 4.57 to 6.35 mm (0.18 to 0.25 in)
Breaking Strength: (~300 lb)
* Total Error Band (TEB) includes the combined errors due to nonlinearity,
hysteresis, nonrepeatability, and thermal effects over the compensated
temperature range, per ISA S51.1.
** 0.05% full scale range accuracy not available in the 0 to 2.9 psig range.
7. Installation
If you are programming your datalogger with Short Cut, skip Section 7.3,
Wiring, and Section 7.4, Programming. Short Cut does this work for you. See
Section 4, Quickstart, for a Short Cut tutorial.
7.1 Installation Considerations
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.
7.1.1 Transducer Position
The CS451/CS456 can be installed in any position; however, when it leaves the
factory it is tested in the vertical position. There will be an offset error if not
installed vertically; contact Campbell Scientific for more information.
7.1.2 Vent Tube
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 vapor 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, ensure the desiccant is blue; replace if not.
The desiccant tube must always be attached to the CS451/CS456.
CAUTION
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