Soil temperature sensors

PESSL INSTRUMENTS SOIL TEMPERATURE

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TECHNICAL SPECIFICATIONS

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

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TECHNICAL SPECIFICATIONS

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

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TECHNICAL SPECIFICATIONS

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)

PESSL INSTRUMENTS HEAVY DUTY MULTIPLE-TEMPERATURE PROBE

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TECHNICAL SPECIFICATIONS

Order number: MUSO

The multiple-temperature probe is a thermometer, designed for making measurements in extremely harsh conditions like the temperature of waste on disposal sites, and chipped wood in storage rooms.

FEATURE	VALUE
Operating temperature range	-55°C to +125°C
Supply DC voltage (range)	3 – 5,5 V
Thermometer error -10°C to +85°C	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). iMETOS checks all sensors every 5 minutes