5in1 NPK sensor

5‑In‑1 Soil NPK Sensor – Accurate, Real‑Time Nutrient Monitoring

The 5in1 NPK sensor is an integrated, multi‑parameter soil probe designed to deliver simultaneous measurements of nitrogen (N), phosphorus (P) and potassium (K) levels, alongside soil moisture and temperature. Utilizing a hybrid electromotive force (EMF) and resistive sensor array, it provides high‑resolution data (≤ 5 ppm for N and ≤ 3 ppm for P/K) within a single, compact probe that can be inserted directly into the root zone. The sensor employs built‑in temperature compensation and a low‑power microcontroller for real‑time analytics, enabling seamless integration with precision‑fertigation systems and Ag‑Tech platforms.

With a rugged, sealed enclosure rated to IP68 and a lifetime of > 10 000 insertions, the unit withstands both grazing livestock and heavy irrigation cycles. Its digital I²C interface (5 V‑compatible) or optional wireless BLE module allows instant data transfer to field controllers, cloud dashboards, or smartphone apps. The integrated EEPROM records historical readings for trend analysis, and the sensor can be powered from 3.3 V to 5 V supplies, drawing < 30 mA during operation.

• Key Spec 1: Measurement range – 0 – 5000 ppm (N, P, K)
• Key Spec 2: Accuracy – ±5 ppm N, ±3 ppm P, ±3 ppm K; ±0.5 % RH moisture; ±2 °C temperature
• Key Spec 3: Output – I²C 0 – 5 V, optional BLE/Wi‑Fi; sampling time < 1 s
• Common Use Case: Integrated into automated fertigation pumps for real‑time nutrient delivery across large fields or greenhouse beds.