RS485 Soil NPK Sensor nitrogen phosphorus Potassium tester 3 in 1 soil

Soil NPK Sensor The soil nitrogen, phosphorus, and potassium three-in-one fertility sensor is suitable for detecting the content of nitrogen, phosphorus, and potassium in the soil, and determining the fertility of the soil by detecting the content of nitrogen, phosphorus, and potassium in the soil, thereby facilitating the systematic assessment of the soil condition. Can be buried in the soil for a long time, resistant to long-term electrolysis, corrosion resistance, vacuum potting, completely waterproof. Power supply 5-30VDC Maximum power consumption ≤0.15W Operating temperature -40~80℃ NPK parameters Range 1-1999 mg/kg(mg/L) Resolution 1 mg/kg(mg/L) Precision ±2%FS Response time ≤1S Protection grade IP68 Probe material 316 stainless steel Sealing material Black flame retardant epoxy resin Dimensions 45*15*123mm Output signal RS485 FEATURES: 1) Low threshold, few steps, fast measurement, no reagents required, unlimited detection times. 2) High measurement accuracy, fast response speed and good interchangeability. 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 the soil for long-term dynamic testing. 5) Probe insertion design ensures accurate measurement and reliable performance.