The 107 is a rugged, accurate probe that measures temperature of air, soil, or water from -35° to +50°C. It easily interfaces with most Campbell Scientific data loggers and can be used in a variety of applications.

The 107 consists of a thermistor encapsulated in an epoxy-filled aluminum housing. The housing protects the thermistor, allowing you to bury the probe in soil or submerge it in water.

  • Versatile product—measures air, soil, or water temperature

  • Easy to install or remove

  • Durable

  • Compatible with AM16/32-series multiplexers, allowing measurement of multiple sensors

Sensor Description BetaTherm 100K6A1IA Thermistor
Tolerance ±0.2°C (over 0° to 50°C range)
Temperature Measurement Range -35° to +50°C
Temperature Survival Range -50° to +100°C
Steinhart-Hart Equation Error ≤±0.01°C over measurement range (CRBasic data loggers only)
Polynomial Linearization Error Typically < ±0.5°C over measurement range (Edlog data loggers only)
Time Constant in Air 30 to 60 s (in a wind speed of 5 m s-1)
Maximum Submergence 15 m (50 ft)
Probe Diameter 0.76 cm (0.3 in.)
Probe Length 10.4 cm (4.1 in.)
Maximum Cable Length
  • 305 m (1000 ft) is typical and requires no programming changes.
  • 762 m (2500 ft) requires programming changes. (Refer to section 8.4 of the 107 manual for assistance.)
Weight 136 g (5 oz) with (3.05 m) 10 ft cable


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