Apogee SU-221 Manual del usuario - Página 11
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OPERATION AND MEASUREMENT
The SU-221 UV-A sensor has a SDI-12 output, UV radiation is returned in digital format. Measurement of SU-221
UV-A sensors requires 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