Apogee Instruments SU-221 Manuel du propriétaire - Page 12
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OPERATION AND MEASUREMENT
The SU-221 UV-A sensor has an SDI-12 output; UV radiation is returned in digital format. Measurement of SU-221
UV-A sensors require a measurement device with SDI-12 functionality that includes the M or C command.
Wiring
White: Positive (signal from sensor)
Red: Input Power
Black: Ground (from sensor signal and output power)
Clear: Shield/Ground