109-L

Specifications and Technical Data

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Rugged, Accurate, Versatile
Can be used in a variety of applications

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Technical Description

The 109 consists of a thermistor encapsulated in an epoxy-filled aluminum housing. The housing protects the thermistor allowing it to be buried in soil or submerged in water.

This probe outputs a 0 to 2.2 V signal, which our CR200(X)-series dataloggers can measure.

109-L Specifications

Sensor: BetaTherm 10K3A11B Thermistor
Tolerance: ±0.2°C over 0° to 70°C range
Temperature Measurement Range:
-50° to +70°C
Steinhart-Hart Equation Error (maximum): 0.03°C at -50°C
Interchangeability Error: < ±0.2°C over 0° to 70°C range increasing to 5°C at -50°C
Time Constant in Air: 30 to 60 s in a wind speed of 5 m s^-1
Maximum Cable Length: 305 m (1000 ft)
Maximum Submersion Depth:
15.24 m (50 ft)
Probe Length: 10.4 cm (4.1 in.)
Probe Diameter:
0.762 cm (0.3 in.)
Weight with 10-ft cable: 136 g (5 oz)