The Soil Nutrient Tester NPK Sensor is an advanced digital soil analysis device designed to measure essential soil nutrients—Nitrogen (N), Phosphorus (P), and Potassium (K)—directly in the field. Built with a rugged IP68-rated stainless-steel probe, this sensor enables farmers, agronomists, researchers, and greenhouse operators to monitor soil fertility in real time and make informed fertilizer management decisions. The sensor supports RS485 Modbus communication for seamless integration with IoT platforms, weather stations, and smart agriculture systems.

Key Features - 3-in-1 Soil Nutrient Meter- Portable NPK Analyzer

Real-time measurement of Nitrogen (N), Phosphorus (P), and Potassium (K)
High-precision digital sensing technology
Wide measurement range up to 1999 mg/kg
Fast response time for instant field readings
Durable stainless-steel probe construction
IP68 waterproof and dustproof protection
RS485 Modbus communication protocol
Low power consumption for long-term deployment
Suitable for smart farming and IoT integration
Easy installation and maintenance-free operation

Technical Specifications

Parameter	Specification
Product Type	Soil NPK Sensor
Measured Parameters	Nitrogen (N), Phosphorus (P), Potassium (K)
Measurement Range	1–1999 mg/kg
Resolution	1 mg/kg
Accuracy	±2% FS
Response Time	< 1 Second
Output Signal	RS485 Modbus
Power Supply	DC 5–30V
Maximum Power Consumption	≤0.15W
Protection Rating	IP68
Probe Material	Stainless Steel
Operating Temperature	-40°C to +80°C
Installation	Direct Soil Insertion
Communication Protocol	Modbus RTU

Benefits

Improve Fertilizer Efficiency: Monitor nutrient levels accurately and apply fertilizers only where required, reducing waste and costs.
Increase Crop Yield: Maintain optimal nutrient balance to support healthier plant growth and maximize productivity.
Real-Time Soil Monitoring: Obtain immediate soil nutrient data without waiting for laboratory testing.
Smart Agriculture Ready: Integrates with IoT platforms, data loggers, gateways, and farm management systems.
Reduce Environmental Impact: Prevent over-fertilization and nutrient runoff by applying precise nutrient management practices.

Applications

Precision Agriculture
Smart Farming Projects
Greenhouses
Horticulture
Agricultural Research Institutes
Soil Testing Laboratories
Irrigation Management Systems
Crop Nutrition Monitoring
Plantation Management
Fertilizer Optimization Programs

How It Works

Insert the sensor probe directly into the soil.
The sensor measures available Nitrogen, Phosphorus, and Potassium levels.
Data is transmitted via RS485 Modbus communication.
Readings can be viewed through controllers, data loggers, IoT gateways, or cloud-based monitoring platforms.
Use the data to optimize fertilizer application and crop management.

Why Choose Our Soil NPK Sensor?

High Accuracy Digital Measurement
Industrial Grade Waterproof Design
Long Service Life
Easy Integration with IoT Systems
Reliable Field Performance
Low Power Consumption
Suitable for Agriculture and Research Applications
Cost-Effective Nutrient Monitoring Solution

Package Includes

Soil NPK Sensor Probe
RS485 Communication Interface
User Manual
Calibration & Installation Guide

Frequently Asked Questions (FAQs)

What nutrients does the sensor measure?

The sensor measures Nitrogen (N), Phosphorus (P), and Potassium (K), the three primary nutrients required for plant growth.

Can the sensor be used outdoors permanently?

Yes. With an IP68 protection rating and stainless-steel construction, it is suitable for long-term outdoor deployment.

What is the measurement range?

The sensor measures nutrient concentrations from 1 to 1999 mg/kg.

Looking for more soil testing instruments?

We offer a wide range of soil meters and analyzers, including pH meters, moisture meters, EC meters, NPK analyzers, and multi-parameter soil testing devices for agriculture, gardening, and research applications. Browse our complete collection to find the right soil testing solution for your needs.

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