You are here: Home / Products / Meteorological Monitoring / Soil Sensors / BGT-SWPS Soil Water Potential Sensor

BGT-SWPS Soil Water Potential Sensor

This sensor consists of a humidity sensor and a porous material with a known moisture release curve. When the porous material reaches moisture equilibrium with the surrounding soil, the humidity sensor measures the moisture content of the porous material and converts the moisture content into water potential based on the moisture release curve.
The measurement range of this sensor depends on the distribution range of pore sizes in porous materials; the larger the pore size range, the larger the sensor measurement range. It is mainly used for field positioning detection and observation of soil water potential, so as to further obtain soil moisture, hydraulic conductivity and other soil water properties parameters.

Availability:



Inquire

Soil Water Potential Sensor Soil Water Potential Sensors Water Potential Sensor iot farming sensors smart farming sensors

Key Selling Points

Product Parameters

Application Scenarios

◀◀ Key Selling Points ▶▶

1. High-Precision Water Potential Measurement

Measures soil water potential (-500 to -10 kPa) with ±1 kPa accuracy (or 1% FS), ensuring reliable data for irrigation and drought management.

Automatic calibration eliminates manual adjustments, maintaining accuracy over time.

2. Zero Drift & Long-Term Stability

No drift caused by ceramic degradation ensures consistent performance, even in harsh environments.

Epoxy-sealed IP68 design withstands extreme temperatures (-40°C to +50°C) and moisture.

3. Plug-and-Play Installation

Simple burial process: Apply mud to the sensor, bury, and start monitoring without programming.

Dual output options: RS485 Modbus-RTU and 4–20mA for seamless integration into IoT or legacy systems.

4. Energy-Efficient & Durable

Low power consumption (15mA@12V DC) ideal for solar-powered or remote setups.

Compact and lightweight (200g), designed for long-term field research.

Key Features:

Lab-Grade Accuracy: ±1 kPa error for precise drought monitoring.
Zero Drift Guarantee: No performance degradation over time.
All-Weather Ready: IP68-rated, survives -40°C to +50°C.
Flexible Integration: RS485 Modbus-RTU and 4–20mA output.
Easy Setup: Bury, calibrate, and collect data in minutes.

◀◀ Product Parameters ▶▶

Sensor type	Ceramic material
Range	-500～-10kPa
Accuracy	1kPa,1%FS
Operating humidity	0~100%RH
Storage temperature	-40℃ ~ +50℃
Storage humidity	<100% (no condensation)
Ingress Protection	IP68
Power supply	9~24VDC
Power consumption	15mA@DC12V
Output signal	RS485 Modbus-RTU, 4~20mA
External dimensions	L117 * W45* H16 (mm)
Weight	About 200g

◀◀ Application Scenarios ▶▶

◆◆ Applications:

Precision Irrigation: Optimize water usage by monitoring soil water potential in real time.
Arid Agriculture: Study drought resistance and crop water requirements in dry regions.
Environmental Research: Monitor frozen soils, roadbeds, and hydraulic conductivity in ecological projects.
Greenhouse Management: Maintain optimal soil moisture for high-value crops.
Hydrology Studies: Analyze soil water properties for flood prevention and water conservation.
Choose RS485 Modbus-RTU for smart farming systems or 4–20mA for traditional setups. Customize sensor networks with flexible addressing and broadcast commands.

◆◆ Install in Minutes, Monitor for Years
Just bury the sensor, apply mud for equilibrium, and start collecting data. Low power consumption keeps it running smoothly in off-grid locations.

◆◆ Equipment Installation

1. First determine the installation depth and location of the soil water potential.

2. Take a soil sample at the installation location, add water and mud to the soil sample, and apply the mud to the soil water potential sensor.

3. The sensor covered with mud is buried to the installation location, and the soil can be backfilled.