RS485 Soil Moisture Temperature pH EC Sensor, IP68 Waterproof MultiParameter Soil Probe with NPK Detection

Color: THCS Product overview This RS485 420mA soil sensor measures soil temperature, moisture, pH, and conductivity (EC), with optional NPK monitoring. The probe is designed for longterm burial, corrosion resistance, and stable output. It supports multiple output formats for integration into data loggers and control systems. Key benefits Multiparameter monitoring in a single probe: temperature, relative humidity (soil moisture), pH, EC, and optional NPK provide a complete soil profile for irrigation and fertilization decisions. Durable for field use: stainless steel probe, vacuum potting, and IP68 protection allow continuous immersion and longterm installation. Fast response and stable readings: short response times and longterm stability help with reliable trend monitoring. Flexible outputs and integration: RS485, 420mA, 05V, and 010V outputs enable connection to controllers, data loggers, or HMIs. Measurements and performance Temperature Measuring range: 40 to 80 C Accuracy: ±5(25) Longterm stability: 0.1% per year Response time: 15 seconds Humidity (soil moisture) Measuring range: 0 to 100 percent RH Accuracy: 2% within 050 percent, 3% within 50100 percent Longterm stability: 1% RH per year Response time: 4 seconds Conductivity (EC) Measuring range: 0 to 20000 us/cm Accuracy: ±3% for 010000 us/cm; ±5% for 1000020000 us/cm Longterm stability: 1 us/cm per year Response time: 1 second pH Measuring range: pH 3 to 9 Accuracy: ±0.3 pH Longterm stability: 5% per year Response time: 10 seconds Nitrogen, Phosphorus, Potassium (NPK) Measuring range: 1 to 1999 mg/kg (mg/L) Resolution: 1 mg/kg (mg/L) Response time: <1 second Important reminder: NPK values are measured with a rapid detection method and may have error. Use NPK readings cautiously for planting reference. The sensor supports writing NPK data so you can enter values from a standard laboratory instrument to improve monitoring accuracy. Basic and interface specifications Power supply: DC 4.5 to 30 V Max power consumption: 0.5 W at 24 V DC Protection class: IP68 for longterm immersion Cable length: default 2 m Operating environment: 40 to 80 C Overall dimensions: 45 x 15 x 123 mm Outputs: RS485, 420mA, 05V, 010V Design features Compact, easy to install and maintain Stainless steel probe and thoughtful structural design for long life Low sensitivity to soil heterogeneity and salt content when used within specification Fast response and data transmission efficiency 4.3 inch HMI touch screen features 4.3 inch HMI touch screen, resolution 480 x 272 Power: 9 to 30 V DC Connects to a single RS485 soil sensor Compatible models: HS, THS, THCS, THPHS, CPHS, THCPHS, NPKTHPHS, NPKPHS, NPKPHCS, NPKPHCTHS Not compatible with PHS and NPKS Dashboard and curve display for realtime monitoring Onscreen calibration Stores up to 1900 logs, configurable logging interval Export logs to SD card Installation and use Insert the probe 3 to 5 inches (about 10 cm) into the soil and wait 10 to 15 seconds for a stable reading. Do not force the probe into dry, compacted soil. If soil is very dry, moisten the area or loosen the soil before insertion to avoid damage. For N