Model 3400H Transducer; Splicing And Junction Boxes; Figure 7 - Typical Multi -P - Geokon 3400 Series Instruction Manual

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4.6 Model 3400H Transducer

When connecting the Model 3400H transducer to external fittings, the fitting should be tightened
into the 1/4"-NPT thread with a wrench on the flats provided on the transducer housing. Also,
avoid tightening onto a closed system since the process of tightening the fittings could overrange
and permanently damage the transducer. If in doubt, attach the gage leads to the readout box and
take readings while tightening. Teflon tape on the threads makes for easier and more positive
connection to the transducer.

4.7 Splicing and Junction Boxes

Cable splicing should be kept to a minimum since changes in cable resistance can cause changes
in calibration if remote sensing techniques or 4-20 mA output are not in use.
The Model 3400 utilizes a semiconductor transducer and, as such, has low-level output signals.
If cables are damaged or improperly spliced, the outputs can be seriously degraded.
Therefore, it is absolutely necessary to provide a high degree of cable protection. If cables
must be spliced, only recognized high quality techniques should be used. The splice should
be waterproofed completely. Geokon recommends the use of 3M Scotchcast model 82-A1; these
kits are available from the factory.
Figure 7 - Typical Multi-Piezometer Installation