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Soil Moisture Temperature Sensor for Reliable Monitoring
soil moisture temperature sensor
Getting consistent readings of soil moisture and temperature is a basic need in projects ranging from irrigation management to research on slope stability. Without both data points, you’re often guessing at how water moves through the soil and how temperature shifts affect it. A combined soil moisture temperature sensor gives you that picture in one probe. Kingmach, as a manufacturer specializing in geotechnical and environmental monitoring, produces sensors that aim to deliver dependable data without unnecessary complexity. Our sensors fit into mid-range budgets while handling real field conditions—whether that’s long-term burial in agricultural fields or short-term monitoring runs on construction sites. We build them to order for specific cable lengths, output signals, and probe profiles, and ship worldwide with the support to get them running.
Technical Detail
Configured around process stability, mold life, and long-term uptime.
These sensors use a two-in-one design that measures volumetric water content and temperature at the same spot. The sensing element is typically enclosed in a durable, corrosion-resistant body that stands up to being buried or pushed into soil for long periods. Output options cover analog voltage, current loop, or RS485 digital, so they link up with most data loggers and controllers you already have. They show up in precision agriculture, where knowing both moisture and temperature helps schedule irrigation and predict frost risk. In environmental studies, the sensors track water flux in the vadose zone or help calibrate remote sensing data. On construction and mining sites, they contribute to slope stability assessments by revealing pore pressure changes linked to temperature fluctuations. Every order is handled as a project—we can match probe length, cable armoring, and connector type to your site’s requirements. A global distributor network means local support is often available. Calibration services and technical documentation come standard.
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View DetailsFAQ
Common technical questions
What’s the difference between the analog and digital output versions?
Analog versions give a simple voltage or current signal that scales with moisture or temperature—easy to wire into basic data loggers. Digital versions using RS485 (Modbus) provide both measurements on a single cable run and add error checking, which helps over longer distances. The choice depends on your logging system and how far the sensor sits from the controller. We can provide either, depending on your project.
Can these sensors stay in the ground permanently?
They’re designed for long-term burial. The body is typically stainless steel or PVC, sealed against moisture ingress. As with any buried sensor, long-term accuracy depends on soil chemistry and movement; periodic calibration checks are a good practice. We can advise on installation methods that minimize drift.
How do I connect multiple sensors to one datalogger?
If you’re using analog sensors, you’ll need as many analog inputs as you have sensors. With RS485 digital sensors, you can daisy-chain multiple units on a single bus using Modbus addressing, which simplifies wiring and reduces logger port requirements. Cable lengths up to several hundred meters are common with proper termination.
What kind of maintenance do these sensors require?
Minimal maintenance. Keep the cable connectors dry, and occasionally check that the sensor hasn’t shifted or been damaged by roots or animals. If readings drift, a recalibration against known moisture levels can be done using our guidelines or with a calibration service.
Do you offer sensors for saline or high-temperature soils?
We can advise on probe materials and sealing options for harsh conditions. For saline soils, certain measurement principles may be less affected; we select the sensor type based on your soil chemistry. Temperature tolerance is typically -20°C to 60°C, but we can discuss extended ranges for special requests.
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Share your product type, target capacity, and application requirements. Our team can review the details and recommend a practical next step.