Digital Capacitive Soil Temperature and Humidity Transmitter for Intelligent Greenhouse
Soil moisture temperature and humidity transmitter is suitable for soil temperature and moisture measurement, by studying the main types of soil dielectric properties, and analysis may lead to differences in soil physical and chemical properties, the use of multiple types of soil contrast (Θ_v) and dielectric constant (K_a) of soils, and the applicability of various models.
The soil moisture content was measured from drying to saturation in different soils, and then the TDR was measured.
In order to improve the measurement accuracy, the calibration formula of the θ_v-K_a ~ (0.5) of the eight soils was established according to the actual water content and the measured dielectric constant.
The accuracy of water content after correction is 3-5 times higher than that of traditional methods. This product is high precision, fast response, stable output. By the soil salt content of small, suitable for all kinds of soil.
Long-term buried in the soil, resistant to long-term electrolysis, corrosion resistance, vacuum potting, completely waterproof.