SM150T User Manual 1.0
Operation
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Fully grounded system
Figure 3 This diagram shows the logger, power supply and sensor all grounded.
This minimises the possibility of galvanic corrosion of the SM150T connector. It
also minimises the possibility of nearby AC-powered machinery injecting noise into
the readings. The impact of the potential ground loop between logger and sensor
is mitigated by the differential wiring of the SM150T.
Logger grounded
Figure 4 This diagram shows a battery or high quality power supply with no
leakage current to ground. The logger is grounded. The potential ground loop
between logger and sensor is mitigated by the differential wiring of the SM150T.
This is the best arrangement.
