The ST-110 is a high accuracy thermistor (± 0.1 C from -40 to 60 C) designed to minimize solar load and thermal conduction. White heat shrink is used on the cable behind the thermistor to reduce solar load. Constantan wire is used to minimize thermal conduction down the wire towards the thermistor. The ST-110 is designed to make air temperature measurements in Apogee's TS-100 Aspirated Radiation Shield and can be used in static, multi-plate shields from other companies as well.
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Measurement Range-50 to 70 CMeasurement Uncertainty0.1 C (from 0 to 70 C), 0.15 C (from -40 to 0 C)Measurement RepeatabilityLess than 0.01 CNon-stability (Long-term Drift)Less than 0.02 C per year (when used in non-condensing environments where the annual average temperature is less than 30 C; continuously high temperatures or continuously humid environments increase drift rate)Time Constant ( time for detector signal to reach 63 % following a step change)7 sSelf-Heating:Less than 0.01 C (typical, assuming pulsed excitation of 2.5 V DC),; 0.08 C at 5 C (maximum, assuming continuous input excitation of 2.5 V DC)Operating Environment-50 to 70 C; 0 to 100 % relative humidityResistance at 0 C32651.0 ΩInput Voltage Requirement2.5 V DC excitationOutput Voltage Range0 to 2.5 V DC (assuming input excitation of 2.5 V DC)Current Drain0.1 mA DC at 70 C (maximum, assuming continuous input excitation of 2.5 V DC)Dimensions80 mm length, 4 mm diameterMass60 gCable5 m of shielded, twisted-pair wire with santoprene rubber jacket (high water resistance, high UV stability, flexibility in cold conditions)Warranty4 years against defects in materials and workmanship