The new TEROS 12 sensor is more than just a sensor. It’s a complete soil moisture system that treats the whole accuracy problem, rather than just one part of it, by eliminating common problems that cause uncertainty in the data—things like sensor-to-sensor variability, air gaps, or preferential flow. No other soil moisture system on the market addresses these issues.
The TEROS 12 uses a completely new calibration procedure that maximizes accuracy and minimizes sensor-to-sensor variability, while keeping the TEROS 12 cost reasonable. So you can be confident that every sensor you install is going to read exactly like the next one.
The TEROS 12 delivers the best volume of influence to sensor size on the market. We’ve optimized the circuitry in this 9.4-cm sensor to deliver an incredible one-liter volume of influence (versus the 200 mL typical for most sensors). Most soil sensors that measure this much volume are 20 cm or longer, causing installation headaches. Not only that, we’ve positioned a temperature sensor perfectly inside the middle needle so the needles are robust, yet extremely sensitive to soil temperature change. These high-quality stainless steel needles slip easily into even hardened soils, and a durable epoxy fill means the sensor lasts up to 10 years in the field.