FirstRate FST100-EC106 Electrical Conductivity Sensor, Range: 0-5000uS/cm, RS485 Modbus, 4-20mA, Stainless Steel, IP68, 5m Cable

Name: FirstRate FST100-EC106 Electrical Conductivity Sensor, Range: 0-5000uS/cm, RS485 Modbus, 4-20mA, Stainless Steel, IP68, 5m Cable
Brand: FirstRate
SKU: SENS-0329
Price: 26569.00 INR
Availability: OutOfStock

₹26,569.00 (Inclusive of all taxes)

Out of Stock

The FirstRate FST100-EC106 is a high-precision electrical conductivity sensor with dual RS485 Modbus RTU and 4-20mA analog outputs, designed for seamless integration into industrial PLCs, DCS, and data acquisition systems. It provides accurate online measurement from 0 to 5000 µS/cm with automatic temperature compensation via an integrated Pt1000 sensor.

Features

Dual Output: RS485 Modbus RTU and 4-20mA analog signal for flexible industrial integration.
High Accuracy: ±1.5% FS conductivity measurement with ±0.3°C temperature compensation.
Robust Construction: IP68-rated stainless steel housing with 3/4″ NPT pressure port for submerged or inline mounting.
Wide Compatibility: 12-24V DC power supply and 5-meter direct lead cable for versatile installation.
Fast & Stable Response: Utilizes dual high-impedance differential amplifiers for reliable, quick readings.

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Description

The FST100-EC106 sensor employs a high-precision electrode cell to measure the electrical conductivity of a solution, which correlates directly with its ion concentration. An integrated Pt1000 temperature sensor provides automatic compensation, ensuring readings remain accurate across the 0 to 65°C operating range. The sensor’s stainless steel body and IP68 rating guarantee long-term reliability in demanding environments, including fully submerged applications or pressurized pipelines.

Signal conditioning is handled internally, providing both a digital RS485 interface using the Modbus RTU protocol for networked systems and a standard 4-20mA analog output for direct connection to controllers and meters. This dual-output design offers maximum flexibility for water quality monitoring, process control, and environmental data logging.

Key Features

Dual RS485 Modbus and 4-20mA outputs for universal industrial compatibility.
Automatic Temperature Compensation (ATC) with a high-accuracy Pt1000 sensor.
IP68 waterproof rating ensures reliable operation in fully submerged conditions.
Constructed from durable 316 stainless steel for corrosion resistance.
Low power consumption (0.2W typical) for energy-efficient continuous monitoring.
Features a 3/4" NPT threaded port for secure, pressure-rated pipe or tank installation.
Includes a 5-meter shielded cable with direct leads for simplified wiring.
Wide operating voltage range of 12-24V DC for flexible power sourcing.

Applications

Continuous water quality monitoring in municipal drinking water and wastewater treatment plants.
Conductivity control in industrial processes such as cooling towers, boiler feedwater, and chemical dosing.
Aquaculture and hydroponic systems for monitoring nutrient solution strength and salinity.
Environmental monitoring of rivers, lakes, and seawater for research and compliance.
Precision agriculture for monitoring soil salinity and irrigation water quality.

Technical Specifications

Model Number	FST100-EC106
Conductivity Range	0 - 5000 µS/cm
Accuracy	±1.5% Full Scale (FS)
Temperature Accuracy	±0.3°C
Output Signals	RS485 (Modbus RTU), 4-20mA
Supply Voltage	12 - 24 V DC
Power Consumption	~0.2 W
Operating Temperature	0 to 65 °C
Pressure Port	3/4" NPT Thread
Electrical Connection	Direct Lead Cable (5 m)
Housing Material	Stainless Steel
Ingress Protection	IP68

Frequently Asked Questions

What are the output signals of the FST100-EC106 sensor?

The sensor provides two simultaneous output signals: a digital RS485 interface using the Modbus RTU protocol for direct integration with PLCs and SCADA systems, and a standard 4-20mA analog current loop output for simple connection to meters and controllers. This dual-output design offers maximum installation flexibility.

How is the sensor installed and what are its mounting options?

The sensor features a 3/4" NPT male thread for direct installation into a corresponding port on a pipe or tank wall. Its IP68 rating allows for full submersion. The included 5-meter cable with stripped leads can be connected directly to terminal blocks or wired into a junction box for the power and signal connections.

Does this sensor require calibration and how is it performed?

Yes, periodic calibration is recommended for maintaining high accuracy. Calibration is performed using standard conductivity solutions of known value. The process typically involves connecting to the sensor via its RS485 Modbus interface using configuration software to enter calibration mode and input the reference values.

What is the purpose of the integrated temperature sensor?

The integrated Pt1000 temperature sensor provides Automatic Temperature Compensation (ATC). Since the electrical conductivity of a solution is highly temperature-dependent, the sensor continuously measures temperature and applies a compensation algorithm to correct the conductivity reading, ensuring accurate results across the 0-65°C operating range.