
4-20mA Type Soil Moisture Sensor
Features:
- Measures soil moisture from 0 to 100% VWC
- Uses a 70 MHz frequency, which minimizes salinity and textural effects, making the MAS-1 accurate in almost any soil or soil-less media
- Factory calibrations are included for mineral soils, potting soils, and rockwool
- Delivers research-grade accuracy
The sensor determines volumetric water content (VWC) by measuring the dielectric constant of the media using capacitance/frequency domain technology. It minimizes salinity and textural effects, making it accurate in almost any soil or soil-less media. Factory calibrations are included for mineral soils, potting soils, and rockwool. A 24V DC power supply is required to power the sensor
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| Operating Temperature Range | -40° to 140°F |
| Scale | 0 - 100% VWC (Volumetric Water Content) |
| Accuracy | 6% VWC with generic calibration for supported growing media up to 65% VWC; accuracy lessens above 65%. Increased accuracy with medium-specific calibration. |
| Connection | Hardwired |
| Settling Time | 4 seconds |
| Dimensions | 3.5 x .27 x .7" |
| Sensor Series | 4-20mA |
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