FirstRate FST100-2006A Soil Temperature, Moisture & Conductivity Sensor, RS485, -40~85°C, 0~100%RH, 0~20 mS/cm
FirstRate FST100-2006A Soil Temperature, Moisture & Conductivity Sensor, RS485, -40~85°C, 0~100%RH, 0~20 mS/cm - Image 2
FirstRate FST100-2006A Soil Temperature, Moisture & Conductivity Sensor, RS485, -40~85°C, 0~100%RH, 0~20 mS/cm - Image 3
SKU: SENS-0423
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FirstRate FST100-2006A Soil Temperature, Moisture & Conductivity Sensor, RS485, -40~85°C, 0~100%RH, 0~20 mS/cm

₹4,439.00 (Inclusive of all taxes)
Out of Stock

The FirstRate FST100-2006A is a multi-parameter soil sensor providing simultaneous measurement of temperature, volumetric water content, and electrical conductivity (EC) via a robust RS485 interface. Designed for seamless integration with industrial PLCs, data loggers, and agricultural automation systems operating on a 12-24V DC supply, it delivers reliable data for precision irrigation and environmental monitoring.

Features

  • Triple-Parameter Sensing: Simultaneously measures soil temperature (-40°C to 85°C), moisture (0-100% RH), and electrical conductivity (0-20 mS/cm).
  • Industrial RS485 Interface: Enables stable, long-distance communication and easy integration into Modbus-based monitoring networks.
  • Rugged, Direct-Burial Design: Sealed with ABS engineering plastic and epoxy resin for corrosion resistance and permanent installation in soil.
  • Wide Operating Voltage: Supports 12-24V DC power input, compatible with standard field instrumentation and solar-powered systems.
  • Fast Response Time: Delivers updated sensor readings in ≤1 second for real-time monitoring and control.

Out of stock

Description

The FST100-2006A sensor employs a combination of sensing principles: a precision thermistor for temperature, frequency-domain reflectometry (FDR) for volumetric water content, and a conductive cell for soil salinity via EC measurement. Its signal is conditioned onboard and transmitted via a robust RS485 digital bus, ensuring high noise immunity and reliable data transmission over extended cable runs in electrically noisy agricultural or industrial environments.

Constructed with an ABS plastic body and epoxy-resin sealed sensing head, the sensor is designed for direct, permanent burial. It operates reliably across an extreme temperature range from -40°C to 85°C, making it suitable for year-round monitoring in diverse climates. The integrated 1-meter cable provides direct connection to junction boxes or transmitters.

Key Features

  • Integrated three-in-one measurement of critical soil health parameters.
  • High-accuracy EC measurement with ±3% FS (0-10 mS/cm) and ±5% FS (10-20 mS/cm) accuracy.
  • Durable, waterproof construction (implicit IP68-grade sealing) for harsh, buried applications.
  • Low-power design suitable for remote, solar-powered monitoring stations.
  • Fast data refresh rate supports real-time decision-making for automated irrigation systems.
  • Stable performance with minimal drift, ensuring long-term measurement reliability.
  • Wide compatibility with industry-standard RS485 Modbus RTU protocol.
  • Optimized performance-to-cost ratio for large-scale deployment in precision agriculture.

Applications

  • Precision irrigation scheduling and water management in large-scale agriculture.
  • Soil salinity monitoring for fertility management and prevention of crop stress.
  • Environmental research and climate station networks for soil condition data logging.
  • Automated greenhouse and nursery management systems for optimal plant growth.
  • Golf course and turf management for maintaining soil health and moisture levels.

Technical Specifications

Model NumberFST100-2006A
Measurement ParametersSoil Temperature, Moisture, Electrical Conductivity (EC)
Moisture Range0 to 100% RH
EC Range0 to 20 mS/cm
EC Accuracy±3% FS (0-10 mS/cm), ±5% FS (10-20 mS/cm)
Temperature Range-40°C to 85°C
Operating Temperature-40°C to 80°C
Supply Voltage12 to 24V DC
Output InterfaceRS485 (Modbus RTU)
Response Time≤1 second
ConnectorIntegrated 1-meter direct-out cable
Housing MaterialABS Engineering Plastic, Epoxy Resin Seal
Dimensions (approx.)21 cm x 10 cm x 5 cm
Weight (approx.)0.175 kg

Frequently Asked Questions

What is the power supply requirement for the FST100-2006A sensor?

The sensor operates on a 12 to 24V DC power supply, which is standard for industrial and field instrumentation. This wide input range provides flexibility for use with regulated power adapters, battery banks, or solar-powered systems commonly found in remote monitoring applications.

How do I communicate with this sensor and what protocol does it use?

Communication is via an RS485 digital interface. It typically uses the Modbus RTU protocol over the RS485 bus. You will need an RS485 to USB or RS485 to UART converter to connect it to a computer or microcontroller, and then query the device using standard Modbus register commands as defined in its datasheet.

Can this sensor be buried directly in the soil, and how deep?

Yes, the sensor is specifically designed for direct burial. Its housing is sealed with epoxy resin and ABS plastic to be waterproof and corrosion-resistant. The entire sensing section should be inserted fully into the soil at the desired depth, ensuring good soil contact for accurate moisture and EC readings.

What is the accuracy of the electrical conductivity (EC) measurement?

The EC measurement accuracy is ±3% of Full Scale (FS) within the 0 to 10 mS/cm range, and ±5% FS within the 10 to 20 mS/cm range. For precise salinity management, it is recommended to perform a periodic calibration check against a standard solution, especially in critical agricultural applications.

Package Includes

  • 1 x FirstRate FST100-2006A Soil Temperature, Moisture & Conductivity Sensor
  • 1 x Integrated 1-meter output cable

Additional Information

Weight 0.175 kg
Dimensions 21 × 10 × 5 cm

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