MPS-2 & MPS-6
5
CONNECTING TO A LOGGER
Figure 7: Wire Illustration
Note: The acceptable range of excitation voltages is from 3.6 to 15
VDC. If you wish to read the MPS-2 or the MPS-6 with the Campbell
Scientific Data Loggers, you need to power the sensors off of the 5
V, 12 V, or switched 12 V port.
If your sensor is equipped with the standard 3.5 mm plug, and you
wish to connect it to a non-Decagon data logger, you have two op-
tions.
First, you can clip off the plug on the sensor cable, strip and tin
the wires, and wire it directly into the data logger. This has the
advantage of creating a direct connection with no chance of the sen-
sor becoming unplugged; however, you cannot easily use it in the
future with a Decagon readout unit or data logger. The other op-
tion is to obtain an adapter cable from Decagon. The 3-wire sensor
adapter cable has a connector for the sensor jack on one end, and
three wires on the other end for connection to a data logger (this
type of wire is often referred to as a “pigtail adapter”). Both the
stripped and tinned adapter cable wires have the same termination
as seen above; the white wire is excitation, red is output, and the
bare wire is ground.
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