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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Current Stock:
Measurement Range
-50 to 70 C
Measurement Uncertainty
0.1 C (from 0 to 70 C), 0.15 C (from -40 to 0 C)
Measurement Repeatability
Less than 0.01 C
Non-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 s
Self-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 humidity
Resistance
10,000 Ω at 25 C
Input Voltage Requirement
2.5 V DC excitation
Output Voltage Range
0 to 2.5 V DC (assuming input excitation of 2.5 V DC)
Current Drain
0.1 mA DC at 70 C (maximum, assuming continuous input excitation of 2.5 V DC)
Dimensions
80 mm length, 4 mm diameter
Mass
60 g
Cable
5 m of shielded, twisted-pair wire with santoprene rubber jacket (high water resistance, high UV stability, flexibility in cold conditions)
Warranty
4 years against defects in materials and workmanship
