Soil Moisture Meter HLY-B02 Introduction:
HLY-B02 soil moisture meter uses FDR principle to measure and record soil moisture rapidly. Based on the principle of frequency reflection FDR, the soil moisture sensor is a kind of dielectric sensor, which measures the change of capacitance on the sensor under the frequency of 100MHz, so as to measure the dielectric constant of the inserted medium. Because the dielectric constant of water is very high (80), the soil is (3-10). Therefore, when the soil moisture content changes, the dielectric constant of the soil also changes greatly. The sensor circuit minimizes the effect of temperature change on the measurement. Digital technology and durable materials are adopted, with high measurement accuracy and low price. The sensor can continuously monitor the moisture content of different soil depths in many sample plots for a long time. It is widely used in soil and water conservation monitoring, soil hydrological monitoring, fine agricultural production, precision irrigation, geological exploration, plant cultivation and other fields.

Soil Moisture Meter HLY-B02 Features:
1) The host is equipped with 2GB memory and USB interface, so the data can be exported quickly;
2) Measure the soil volume water content within the capacity range of 200 cm around the probe;
3) Anti lightning, frequency intercept interference design, strong anti-interference ability;
4) The sensor has high protection performance (IP68) and can be buried in soil for a long time;
5) Small size, easy to carry; Chinese LCD display, friendly human-computer interface; manual acquisition or free setting interval

Technical Date:
Sensor principle: frequency domain reflection FDR
Measurement parameters: soil volume moisture content
Moisture range: 0-60% saturated
Temperature range: 0-50 ℃
Moisture accuracy: ± 3% (after calibration)
Temperature accuracy: ± 0.5 ℃
Resolution: 0.1%
Response time: ＜ 500ms
Probe operation environment: outdoor, suitable environment temperature is 0-45 ℃
Probe size: 17cm * Φ 4cm
Cable length: Standard 5m (or customized)
Shell material: ABS engineering plastics
Probe material: 316 stainless steel 

Power supply: rechargeable battery
Gross weight: 500g
Protection grade: IP68
Storage space: 2GB