ST-100: Thermistor Temperature Sensor

The ST-100 is a high accuracy thermistor (± 0.1 C from 0 to 70 C), mounted in a waterproof housing, designed for continuous measurement of air, soil, or water.

  • Product Name:Thermistor Temperature Sensor
  • Item No.:ST-100
  • Manufacturers:Apogee
  • Country of Origin:USA

The ST-100 is a high accuracy thermistor (± 0.1 C from 0 to 70 C), mounted in a waterproof housing, designed for continuous measurement of air, soil, or water.

Measurement Range    -50 to 70 C

Measurement Uncertainty    0.1 C (from 0 to 70 C), 0.2 C (from -25 to 0 C), 0.4 C (from -50 to -25 C)

Measurement Repeatability    Less than 0.05 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)

Equilibration Time    30 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 at 0 C    32651.0 Ω

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    70 mm length, 6 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