Series: Sensors in blueberry pots

2. Sensor Teros 12.

The Teros 12 from the American company Meter is the sensor that is widely used in the substrate all over the world. It is designed to measure the water content of the soil/substrate WVC%, electrical conductivity, EC and temperature, T in many types of media and porous materials. It uses high frequency (~70 MHz) dielectric measurement, which reduces the influence of structure and porosity – which is important for measurements in the substrate.

All three measured values ​​can be calibrated for different porosity environments. We offer such a service. However, this will only change the measurement accuracy by 1-2%, which is not decisive for the coverage.

That is why the most common sensor in the world for substrate cultivation is Teros 12.

A special protocol SDI 12 is used to read this sensor. Various automation controllers, data readers and weather stations cannot connect this sensor (for example, GrowSphere Max, GS1, Metos).

Some data readers can connect only one sensor, some – 3 (WiseConn), some – 4 Progres controllers. SDI 12 readers operating on the LoRa radio transmission system of these systems can read these sensors anywhere in the area and transmit them to the central controller.

Therefore, when choosing a sensor, we should consider not only the price of the sensor, but also the data reader and transmitter, so as not to overpay and optimally plan your project.