Apogee Instruments SP-230-SS Owner's Manual - Page 12
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SP-230: Only apply voltage to the integrated heaters. The sensor is self-powered and applying voltage will
damage the sensor.
Wiring for SP-230 Serial Numbers 9898 and above or with a cable connector
Wiring for SP-230 Serial Numbers range 0-9897
White: Positive (signal from sensor)
Blue: Ground (negative lead for heater)
Yellow: 12 V DC (positive lead for heater)
Clear: Shield/Ground
Black: Negative (signal from sensor)
Red: High side of differential channel (positive lead for
sensor)
Black: Low side of differential channel (negative lead
for sensor)
Clear: Analog ground (shield wire)
Green: Ground (negative lead for heater)
White: 12 V DC (positive lead for heater)