The ST-150 is a 1/8 inch, Class A PRT (Platinum Resistance Thermometer) with an IP67 rating. White heat shrink is used on the cable behind the PRT to minimize heat transfer to the sensor. PRT sheath dimensions are 3 mm diameter and 65 mm length, miminzing thermal mass.
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Measurement Range
-40 to 70 C
Measurement Uncertainty
0.1 C (-40 to 60 C), Class A
Measurement Repeatability
Less than 0.01 C
Long-term Drift
Less than 0.05 C per year
Time Constant ( time for detector signal to reach 63 % following a step change)
32 seconds
Self-heating
Less than 0.01 C (typical, assuming pulsed excitation of 2.1 V DC), 0.09 at 5 C (max. assuming continuous input excitation of 2.1 V DC)
Operating Environment
-40 to 70 C; 0 to 100 % relative humidity
Resistance
100 Ω at 0 C
Input Voltage Requirement
Datalogger dependent
Output Voltage Requirement
Datalogger dependent
Current Draw
Datalogger dependent
Dimensions
57.15 mm, 3.18 mm diameter
Mass
95 g
Warranty
4 years against defects in materials and workmanship
