soil moisture and temperature sensor

Kingmach Soil moisture and temperature sensors are designed for long-term embedment in challenging environments. The probe body is typically 316L stainless steel, chosen because it resists corrosion in most agricultural and natural soils. Sensitive elements are sealed to prevent moisture ingress, and we offer a choice of cable materials—PVC for general use or PUR for rougher burial conditions. Custom cable lengths and connector options are standard; just tell us your network layout. On the output side, the sensor can be ordered with SDI-12 for low-power field loggers, RS485 with Modbus RTU for industrial systems, or a 0–2.5V analog signal that works with older dataloggers. Measurement current draw is minimal, often staying under 10mA during active sampling, which helps in solar-powered or battery-operated stations where every milliampere counts. The temperature element is a precision thermistor or RTD, co-located with the moisture sensor so you get paired readings from the same soil volume. Moisture is measured via dielectric constant, with calibration curves that can handle typical mineral soils out of the box. For unusual substrates—volcanic ash, high-organic peat, or heavy clay—we can work with your lab to develop a custom calibration. Because Kingmach is a full-line geotechnical manufacturer, you can pair the sensor with our data loggers, telemetry gateways, and cloud software, or integrate it into your existing SCADA system. We’ve seen them deployed in cut slope monitoring networks across Southeast Asia, irrigation optimization trials in the Middle East, and permafrost research in the Canadian Arctic. Common sense features—like a sharpened tip for easier insertion and color-coded wiring—come from decades of customer feedback, not marketing checklists.