The 8 in 1 NPK Soil Meter from Uniglobal Business is a professional-grade, multi-parameter soil testing device designed for precision agriculture, scientific research, greenhouse management, and large-scale farming operations. This compact yet powerful sensor simultaneously measures eight critical soil parameters in real-time, eliminating the need for multiple devices or chemical reagents.

Whether you are optimizing crop yields, managing irrigation systems, or conducting soil research, this analyzer delivers laboratory-level accuracy directly in the field.

Key Features & Benefits of the 8 in 1 NPK Soil Meter

8 Parameters in One Device: This 8 in 1 NPK Soil Meter measures soil moisture, temperature, EC (electrical conductivity), pH, salinity, nitrogen (N), phosphorus (P), and potassium (K) simultaneously.
High Precision Sensors: Advanced electrode technology with specially processed alloy materials ensures accurate, stable readings with minimal drift.
No Reagents Required: Unlimited testing capability with zero recurring chemical costs — simply insert and measure.
Rapid Response Time: Get reliable readings in seconds with fast stabilization after power-on.
IP68 Waterproof Rating: Fully sealed, corrosion-resistant construction allows for long-term burial in soil or submersion in water.
Multiple Output Options: Standard RS485 (Modbus-RTU protocol) with optional wireless connectivity including LORA, LoRaWAN, GPRS/4G, and WiFi.
Plug-in Probe Design: Ensures measurement accuracy and allows for easy maintenance or replacement.
Wide Application Range: Suitable for all soil types including farmland, greenhouses, pastures, gardens, and scientific experiments.
Cloud Integration Ready: Compatible with matched cloud server and software for real-time PC and mobile monitoring.

Measurement Parameters & Accuracy

Parameter	Measurement Range
Soil Moisture	0 ~ 100% (V/V)
Soil Temperature	-40°C ~ 80°C
Soil EC (Electrical Conductivity)	0 ~ 20,000 μS/cm
Soil Salinity	0 ~ 1,000 ppm
Soil Nitrogen (N)	0 ~ 1,999 mg/kg
Soil Phosphorus (P)	0 ~ 1,999 mg/kg
Soil Potassium (K)	0 ~ 1,999 mg/kg
Soil pH	3 ~ 9 pH

General Specifications

Specification	Details
Product Name	8 in 1 NPK Soil Meter — Soil Moisture, Temperature, EC, pH, Salinity & NPK Sensor
Probe Type	Probe Electrode (Specially Processed Alloy)
Output Signal	RS485 (Standard Modbus-RTU Protocol, Default Address: 01)
Optional Wireless	LORA / LoRaWAN / GPRS / 4G / WiFi / RJ45 Ethernet
Supply Voltage	5 ~ 30V DC
Working Temperature	-40°C ~ 80°C
Stabilization Time	1 minute after power-on
Response Time	< 10 seconds
Sealing Material	ABS Engineering Plastic + Epoxy Resin
Waterproof Grade	IP68
Standard Cable Length	2 meters (Customizable up to 1,200 meters)
Installation	Vertical surface insertion or horizontal buried installation

Product Description

The Uniglobal Business 8 in 1 NPK Soil Meter represents the next generation of soil monitoring technology. Built for demanding agricultural and research environments, this device consolidates eight essential soil measurements into a single, robust probe.

How It Works

The analyzer uses advanced ion-selective electrode technology and precision conductivity sensors to detect nutrient levels and soil chemistry directly at the probe tip. Unlike traditional soil testing that requires sample collection, chemical reagents, and laboratory analysis, this device provides instant, on-site results simply by inserting the probe into the soil.

Construction & Durability

Corrosion-Resistant Alloy Electrode: Withstands strong external impact and resists acid/alkali corrosion for long-term field deployment.
Epoxy Resin Sealing: Vacuum-poured high-density epoxy prevents moisture ingress and ensures complete waterproofing.
ABS Engineering Plastic Housing: Lightweight yet durable protection for internal electronics.
Plug-in Probe Design: Modular construction allows for accurate calibration and easy probe replacement.

Applications

Precision Agriculture & Smart Farming
Greenhouse & Hydroponic Systems
Scientific Research & Soil Surveys
Water-Saving Irrigation Management
Floriculture & Vegetable Cultivation
Grassland & Pasture Management
Soil Rapid Testing Services
Sewage Treatment & Environmental Monitoring

Installation Methods

Method 1: Surface Measurement

Select a representative soil area and clear surface debris and vegetation.
Insert the sensor vertically and completely into the soil.
If a hard object is encountered, relocate and re-measure.
For best accuracy, take multiple measurements and calculate the average.

Method 2: Buried Installation

Create a vertical soil profile slightly deeper than the sensor's installation depth (20–50 cm diameter).
Insert the sensor horizontally into the soil profile.
Backfill soil in layers, compacting gently to ensure good soil-probe contact.
For optimal results, backfill removed soil in reverse order to maintain original moisture levels.

Frequently Asked Questions (FAQs)

Q1: What makes this 8 in 1 NPK Soil Meter different from other soil testers?

Unlike basic 3-in-1 or 5-in-1 meters, our 8 in 1 NPK Soil Meter measures all critical parameters — moisture, temperature, EC, pH, salinity, nitrogen, phosphorus, and potassium — in a single professional-grade device. It features IP68 waterproofing, RS485 digital output, and optional wireless connectivity for integration into smart farming systems.

Q2: Do I need to purchase chemical reagents for testing?

No. This analyzer operates on electrode-based sensing technology. It requires no chemical reagents, has unlimited detection capability, and involves zero recurring reagent costs.

Q3: What is the power supply requirement?

The sensor operates on a wide DC voltage range of 5V to 30V, making it compatible with most solar power systems, data loggers, and agricultural monitoring stations.

Q4: How do I collect and view the data?

The standard RS485 output with Modbus-RTU protocol allows integration with your existing data logger or PLC. Alternatively, Uni Global Business can supply matched data loggers, display screens, or wireless transmission modules (LORA/LoRaWAN/GPRS/4G/WiFi). We also offer cloud server and software solutions for real-time remote monitoring via PC or mobile devices.

Q5: Can the sensor be left buried in the soil permanently?

Yes. With an IP68 waterproof rating and corrosion-resistant construction, the sensor is designed for long-term burial in soil or continuous submersion in water for 24/7 monitoring.

Q6: What is the standard cable length, and can it be customized?

The standard cable length is 2 meters. We offer customization up to 1,200 meters to suit your specific installation requirements.

Q7: How quickly can I receive my order?

For standard quantities, delivery is typically within 1–3 working days after payment confirmation. Bulk orders may require additional lead time — please contact our sales team for details.

Q8: Is the sensor suitable for all soil types?

Yes. The specially processed alloy electrode and advanced sensing technology perform reliably across various soil compositions, including clay, loam, sandy soils, and organic substrates. However, pure sand may cause abnormal readings due to poor soil-probe contact.

Q9: Can I get a sample before placing a bulk order?

Yes. Uniglobal Business maintains stock for sample orders. Contact us to arrange a sample unit for evaluation.

Ready to Order?

Get the PH-016A High Accuracy Digital pH Meter today and experience professional-grade precision at an unbeatable price.

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