Air,
Soil, Water
TemperatureNTC Thermistor Probes
The NTC thermistor probes are ideal for making accurate measurements of temperature. They can be used for making measurements of air, soil, water, and pavement temperatures using a data logger or chart recorder.
The temperature probes use a NTC thermistor housed in a sealed stainless steel cylindrical probe or an epoxy encapsulated sheath. Either probe can be submerged in water or buried in soil or under pavement. The output signal from the probes is a resistance directly proportional to the measured temperature. The probes are typically connected to a half or full resistance bridge with an excitation voltage to provide a voltage signal proportional to temperature.
The
sensing element in these temperature probes is a 10K ohm NTC thermistor. In addition to the standard probe
housings, the probes are available in other configurations (ring
connections, thermowell adapters, etc.).
Ordering Information
TMP100 A Stainless steel sheath, –80oC to +150oC
TMP100 W Neoprene sheath, –80oC to +150oC
Technical Specifications
Transducer:
10K ohm NTC Thermistor
Accuracy: +0.1oC
(at 0° C)
Time Constant: 4.5 seconds
for air temp
15 seconds for soil temp
Temperature range: –80oC to +150oC
Connections:
2 wire configurations
Cable length:
6' for air, 10' for water and soil
Housing: 316 stainless steel or
neoprene.
