Apogee Instruments ST-110 Manual del usuario - Página 12
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ST-300 PRT
Connect the sensor to a measurement device (meter, datalogger, controller) capable of inputting 2.1 V DC, and
measuring and displaying or recording a millivolt (mV) signal (an input measurement range of 16 to 27 mV is
required to cover the entire temperature range of the sensor). In order to maximize measurement resolution and
signal-to-noise ratio, the input range of the measurement device should closely match the output range of the
thermistor.
VERY IMPORTANT:
Apogee changed all wiring colors of our bare-lead sensors in March 2018. To ensure
proper connection to your data device, please note your serial number then use the appropriate wiring
configuration below.
Wiring for ST-300 Serial Numbers 1076 and above
Wiring for ST-300 Serial Numbers range 0-1075
White: High Side of Differential Channel 1
Black: Low Side of Differential Channel 1
Green: High Side of Differential Channel 2
Yellow: Analog Ground
Blue: Low Side of Differential Channel 2
Red: Excitation channel (excitation for PRT)
Clear: Shield/Ground
White: Analog Ground
Black: Low Side of Differential Channel 2
Green: Low Side of Differential Channel 1
Orange: PRT Excitation Channel
Blue: High Side of Differential Channel 1
Red: High Side of Differential Channel 2
Clear: Ground (shield wire)