Soil moisture sensor (transmitter) is a high precision, high sensitivity of soil moisture measurement instrument. The sensor uses the principle of electromagnetic pulse to measure the apparent dielectric constant of the soil, so as to obtain the true soil moisture content, which is fast and accurate, stable and reliable, and free from the influence of chemical fertilizer and metal ions in the soil. The instrument can be widely used in agriculture, forestry, geology, construction and other industries.

technical parameter

Measuring range: 0-100%

Accuracy: ± 3%

Power supply mode: DC5~24V

Wiring mode: voltage type: 3 line, current type: 3 line, RS-485 signal: 4 line

Signal output: Voltage type: 0~2.5V DC, 0~5V DC, current type: 4 ~ 20 mA

RS-485 signal: support ModBus protocol (port rate 9600, address 0-255)

Response time: <1S, and measurement stability time: 1S

Interch accuracy: <3% retest error: <1%

Measurement principle: the principle of frequency domain reflection (FDR principle)

Working environment: temperature: -50℃ ~80℃ Relative humidity: 0~100%

IP rating: IP68