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Soil temperature sensors

PESSL INSTRUMENTS SOIL TEMPERATURE

pessl-instruments-soil-temperature

Order number: 600159 / 900124 (iMETOS 3.3), 600020 / 900027 (µMETOS, ECHO)

The Soil Temperature Sensor is a PT1000 in a waterproof stainless steel housing. The sensor output is a duty-cycle signal.

FEATURE VALUE
Sensor SMT172
Operating temperature range: -30 °C to +75 °C
Accuracy: ±0.5 °C (-30 °C to +75 °C)
Sensor PT1000
Operating temperature range: -30 °C to +75 °C
Accuracy: ±0.1 °C (-30 °C to +75 °C)
Supply voltage
4.57-7 V
Supply current
max. 200 μA
Short circuit protection
infinite (within supply voltage range)
Short circuit supply current
max. 40 mA
Calibration error
max. 0.25°C (23°C)
Nonlinearity error
max. 0.2°C
Supply voltage sensitivity
max. 0.1°C/V
Repeatability
max. 0.2°C
Long term drift
max. 0.1°C
Output frequency
1 to 4 kHz
Evaluation
Duty cycle
Cable length
5 m

PESSL INSTRUMENTS MULTIPLE SOIL TEMPERATURE

multiplesoil

Order number: 600079 / 900058 

SAR19/SAR19M provide soil temperature measurement from several centimeters to 15-meter deep by using the Pessl Instruments sensor BUS. The distance between the sensors can be chosen according the application, but only up to 10 sensors can be attached to one sensor chain.

FEATURE VALUE
Temperature sensor
DS18B20
Operating temperature range
-55°C to +125°C
Supply DC Voltage (range)
3 – 5.5 V
Thermometer error -10°C to +85°C
±0.3°C
Drift
±0.2°C
Data transmission
RS 485 Digital signal (temperature data sent on demand of iMETOS main board)

PESSL INSTRUMENTS SINGLE SOIL TEMPERATURE

pessl-instruments-single-soil-temperature
Order number: 600020 / 900027

WMTEMP is a soil temperature sensor.

Necessary Interface to connect this sensor with iMETOS: ECH871EXT, ECH874EXT or ECH871INT, ECH874INT or RFRN09, RFRN12 or WM-BUS.
FEATURE VALUE
Temperature sensor
DS18B20
Operating temperature range
-55°C to +125°C
Supply DC Voltage (range)
3 – 5.5 V
Thermometer error -10°C to +85°C
±0.3°C
Drift
±0.2°C
Data transmission
RS 485 Digital signal (temperature data sent on demand of iMETOS main board)
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