Wireless Water Potential Sensor - Optimized Irrigation

TEROS 21 water potential sensor is straightforward to use. It requires no maintenance, and it’s accurate enough for most applications. This sensor provides an even more accurate soil moisture picture than measuring water content alone. A water content sensor only shows the percentage of water in the soil, but add this sensor, and you’ll know if that water is available to plants and where it will move. Besides water content, matric potential isn’t dependent on soil type so we can compare moisture between different sites. This sensor is also surprisingly affordable, especially when it measures across a wide range, including dry values.

Features

• Easy to use
• Improved accuracy comes from the six-point factory calibration
• Tough, long-lasting body
• No recalibration
• Low salt sensitivity
• Affordability
• Excellent range (sensitivity from -9 kPa all the way to air dry [-100,000 kPa])
• Onboard temperature measurement
• Plug and play capability

Specifications

• Water potential Range: −9 to −2,000 kPa (1.96 to 4.31 pF)
• Resolution: 0.1 kPa Accuracy: ±(10% of reading + 2 kPa) from −100 to −9 kPa
• Dielectric measurement frequency: 70 MHz
• Temperature Range: −40 to +60 °C
• Resolution: 0.1 °C
• Accuracy: ±1 °C
• Length: 9.6 cm (3.8 in) Width: 3.5 cm (1.4 in)
• Height: 1.5 cm (0.6 in)
• Sensor diameter: 3.2 cm (1.3 in)
• Temperature: Min: –40 °C Max: +60 °C

All Sensors work with our Wireless Sensor Node, STS-Node, allowing for easy connection to our IoT Platform.