MPS-6 soil water potential temperature sensor

The MPS-6 sensor is composed of a humidity sensor and a porous material with a known moisture release curve. When the porous material reaches the moisture balance with the surrounding soil, the humidity sensor measures the moisture content of the porous material and converts the moisture content into a moisture release curve Water potential

Technical Parameters
Technical Parameters
Soil water potential
Measuring range
-9 kPa ~ -100,000 kPa
measurement accuracy
±(10% + 2 kPa)@ -9 kPa ~ -100 kPa (see the parameter section of the manual below -100 kPa)
0.1 kPa
Soil temperature
Measuring range
-40 ~ 60°C
measurement accuracy
Sensor parameters
Balance time
10 min. to 1 hr. related to soil water potential
Measuring speed
sensor type
Frequency domain with calibrated ceramic plate; thermistor
output method
RS232 (TTL) with 3.6 volt levels or SDI-12 communication protocol
powered by
3.6-15 VDC, wait state 0.03 mA, maximum value 10 mA during 150 ms measurement state
Cable length
5m, other lengths can be customized
working environment
-40 ~ 60°C (Water potential measurement below 0°C may not be accurate.)
9.6 cm (L) × 3.5 cm (W) × 1.5 cm (D)

Origin: United States

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