MP406 and MP306 ADR Standing Wave Technology Soil Moisture Sensors

MP406 and MP306 ADR Standing Wave Robust Soil Moisture Sensors for long term soil moisture measurements

The MP306/MP406 Soil Moisture Sensor is a robust, long term soil moisture measurement sensor that measures volumetric soil water content using Amplitude Domain Reflectometry (also knowns as standing wave technology). It can be calibrated to provide accuracy within ±1%, and using the standard calibration curves ±3%.

Measures soil water content, independent of soil temperature or salinity
Voltage and 4-20mA versions available
Robust for long term installation in research or commercial applications

Available in several configurations, and compatible with the ICT International IoT MFR Node, this sensor is suitable for deployment in both research and management projects:

MP406: bare ended sensor, voltage output.
MP306: bare ended sensor, voltage output; due to its needles arrangement is suitable for laboratory soil columns applications, or greenhouse pots.
MP406C-12V: 4-20mA sensor, 12V (The 12V supply version has been discontinued)
MP406C-24V: 4-20mA sensor, 24V.

Details on the MPKit that uses the MP306 or MP406 sensor can be found here.

Output

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SKU: MP4--- Categories: Volumetric Water Content, Sensors for Soil Moisture Measurement Brand: ICT International

About the sensor

MP406 and MP306 Soil Moisture Sensor Features

Volumetric Soil Water Content (%) or can simultaneously measure soil water potential
Highly accurate and precise
Robust, stainless steel needles and epoxy body
Measures in saline, toxic and high temperature soils
Rapid measurement
Can be buried for up to 20 years

Research papers using the MP406 Soil Moisture Probe can be found here.MP406CMeasurement Range0-100 VSW%0-100 VSW%Accuracy+/- 1%+/- 1%Resolution0.01% VSW%0.01% VSW%Response TimeLess than 0.5 secondsLess than 0.5 secondsStabilisation Time3 seconds approximately from power-up3 seconds approximately from power-up

Interface

	MP406 or MP306	MP406C
Input Requirements	7-18 V DC unregulated	ICTMP406C-12 System: 10.5V-18V (discontinued) ICTMP406C-24 System: 14V-28V
Power Consumption	24mA typical, 30mA max	25mA at 24Volts (24volt version)
Output signal for 0-100 VSW%	0-1160mV	4 to 20 mA