TR-HTSE-SDI12 soil moisture / conductivity / temperature sensor has stable performance and high sensitivity. It is an important tool for observing and studying the occurrence, evolution, improvement and water-salt dynamics of saline soil. By measuring the dielectric constant of the soil, it can directly and stably reflect the true moisture content of various soils. The TR-HTSE-SDI12 soil moisture sensor measures the volume percentage of soil moisture and is a soil moisture measurement method that meets current international standards. Suitable for soil moisture monitoring, scientific experiments, water-saving irrigation, greenhouses, flowers and vegetables, grass pastures, rapid soil testing, plant cultivation, sewage treatment, precision agriculture and other occasions.
Technical parameter | |
Signal output type | SDI-12 |
Supply voltage | 3.6-16V DC |
Static sleep power | 0.03mA @12V DC |
Dynamic power measurement | When receiving the measurement command, the current is 10mA within 150ms, and then returns to the static sleep power consumption |
Measure time | 150ms |
Data collector compatibility (Including but not limited to) | Decagon Device: Em50, Em50R data collector Campbell Scientific: Any data collector that supports SDI-12 interface (CR10X, CR850, 1000, 3000, etc.) |
Soil dielectric constant range | Available range: 0.88 (air)-81.88 (water) Resolution: within 0.88-40.00, ± 0.1; within 40.00-81.88, ± 0.5 Accuracy: within 0.88-40.00, ± 1; within 40.00-81.88, ± 5% |
EC range | Measuring range: 23ds / m (23000us / cm) Resolution: 0.01 dS / m within 0-7ds / m, 0.05ds / m within 7-23ds / m Accuracy: ± 5% within 0-7ds / m, ± 15% within 7-23ds / m |
Conductivity temperature compensation | Built-in temperature compensation sensor, compensation range 0-50 ºC |
Temperature measurement range | Range: -40 ~ 80 ° C, resolution: 0.1 ° C, accuracy: ± 0.5 ° C |
Measurement principle and measurement method | FDR method for soil moisture, AC bridge method for soil conductivity Soil in situ inserted or immersed in culture solution, nutrient solution of water and fertilizer for direct test |
Protection class | IP68 immersed in water for long-term use |
Operating environment | -40~85ºC |
Probe material | Anti-corrosion special electrode |
Sealing material | Black flame retardant epoxy resin |
Installation method | All embedded or all probes inserted into the test medium |
Cable length | Standard: 2m, can be customized as required |
Connection method | Pre-installed cold-pressed terminals |
Dimensions | 35*11*111mm |
Electrode length | 51mm |
(2) It can also be used for the conductivity of water and fertilizer integrated solutions, and other nutrient solutions and substrates.
(3) The electrode is made of a specially treated alloy material, which can withstand strong external force and is not easy to be damaged.
(4) Completely sealed, resistant to acid and alkali corrosion, can be buried in soil or directly into water for long-term dynamic testing.
(5) High precision, fast response, good interchangeability, probe insertion design ensures accurate measurement and reliable performance.
(6) Perfect protection circuit and multiple signal output interfaces are optional.
Agriculture irrigation
Greenhouse
Smart farm
Garden planting
Geological exploration



Q: Are you a factory/manufacturer?
A: Yes, we are a professional factory/manufacturer of water quality sensors. We also have hot sale and widely used soil sensor TR-TS which can be used to measure soil moisture.
Q: What are the power supply and consumption?
A: The common power supply is 12~24VDC and the consumption is 0.1w@12V which is really low.
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