Campbell Scientific CS431 Submersible Pressure Transducer - Manual (Page 7)

CS431 Submersible Pressure Transducer
3.5 Other Installations
The CS431 can be installed in any position; however, when it leaves the
factory it is tested in the vertical position. Strapping the transducer body with
tie wraps or tape will not hurt it.
If the CS431 is being installed in a fluid environment other than water, check
the compatibility of the fluid with the wetted parts of the probe.
Because the CS431 is vented, a desiccant tube must always be attached to the
CS431. When you receive the transducer, ensure that the desiccant is blue.
Replace the desiccant if it is pink or white. Refer to Section 6 for more
information about desiccant replacement schedule.
4. Wiring
4.1 Datalogger Connections
The pressure measurement requires two differential channels and one
excitation channel, and the temperature measurement requires one single-ended
channel and one excitation channel. Please note that the CR510 and CR500
dataloggers do not have enough channels to measure the temperature element.
Therefore, the orange, brown, and black wires are not connected when using a
CR510 or CR500.
FIGURE 4.1. Typical Pressure Element Wiring
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