SKU: SENS-0334
📋 GST Invoice Available

FirstRate FST-100-YL106 Smart Residual Chlorine Sensor, 0-20mg/L, RS485 Modbus & 4-20mA Output

₹45,189.00 (Inclusive of all taxes)
Out of Stock

The FirstRate FST-100-YL106 is a smart residual chlorine sensor designed for continuous online monitoring in water treatment systems. It provides dual 4-20mA analog and RS485 Modbus-RTU digital outputs for seamless integration with PLCs, SCADA, and industrial data loggers, ensuring precise measurement of chlorine levels from 0 to 20 mg/L.

Features

  • High-precision residual chlorine measurement with 0.01 mg/L resolution.
  • Dual output: 4-20mA analog signal and RS485 Modbus-RTU digital communication.
  • Robust IP68-rated housing constructed from PC plastic and stainless steel.
  • Wide operating temperature range of 0 to 60°C and withstands pressures up to 3 bar.
  • Supports versatile drop-in or pipe socket installation for water treatment systems.

Out of stock

Description

The FST-100-YL106 employs an amperometric sensing principle for the accurate, continuous detection of free residual chlorine in aqueous solutions. Its integrated temperature sensor provides automatic compensation to maintain measurement accuracy (±0.2°C) across varying environmental conditions, making it suitable for harsh water treatment environments.

Engineered for industrial reliability, the sensor’s PC and stainless steel construction, combined with an IP68 ingress protection rating, ensures long-term operation in high-humidity and pressurized applications such as drinking water disinfection, reverse osmosis pre-treatment, and industrial process water monitoring. The dual-output capability allows for flexible system integration, supporting both legacy 4-20mA control loops and modern RS485-based Modbus RTU networks for centralized data acquisition.

Key Features

  • Smart amperometric sensor for precise residual chlorine (Cl2) concentration measurement.
  • High-resolution detection down to 0.01 mg/L for sensitive monitoring.
  • Dual-channel output: 4-20mA analog current loop and RS485 Modbus-RTU protocol.
  • IP68 waterproof and dustproof rating with durable PC and stainless steel housing.
  • Integrated high-accuracy temperature sensor for automatic measurement compensation.
  • Designed for continuous online operation in pressures up to 3 bar (43.5 psi).
  • Wide operating temperature range from 0°C to 60°C for versatile deployment.
  • Compatible with standard industrial power supplies from 12-24V DC.

Applications

  • Continuous residual chlorine monitoring in municipal drinking water disinfection plants.
  • Process water quality control in industrial cooling towers and boiler feed systems.
  • Pre-treatment monitoring for reverse osmosis (RO) and membrane filtration systems.
  • Swimming pool and spa water quality management and automated chemical dosing.
  • Effluent and wastewater treatment plant discharge compliance monitoring.

Technical Specifications

Manufacturer Part NumberFST-100-YL106
Measurement Range0 to 20 mg/L (ppm)
Resolution0.01 mg/L
Output Signals4-20mA, RS485 (Modbus-RTU)
Supply Voltage12-24V DC
Operating Temperature0°C to 60°C
Pressure Rating0-3 bar
Housing MaterialPC + Stainless Steel
Ingress ProtectionIP68
Communication ProtocolModbus-RTU

Frequently Asked Questions

What is the power supply requirement for the FST-100-YL106 sensor?

The sensor operates on a wide-range DC power supply from 12 to 24 volts. This standard industrial voltage range ensures compatibility with most PLC power rails and centralized DC power systems in water treatment facilities.

How do I communicate with this sensor for data logging?

The sensor provides dual communication options. You can use the standard 4-20mA analog output for simple connection to analog input modules. For digital data acquisition and network integration, use the RS485 interface with the Modbus-RTU protocol, which allows multiple sensors to be daisy-chained on a single bus.

Is this sensor suitable for submersion or high-pressure piping?

Yes. With its IP68 waterproof rating, the sensor is fully protected against continuous submersion. Its housing is rated to withstand fluid pressures up to 3 bar (approximately 43.5 psi), making it suitable for direct installation in pressurized water lines, tanks, and process vessels.

What is the installation method for this chlorine sensor?

The FST-100-YL106 supports versatile installation. It can be deployed as a drop-in sensor for tanks or reservoirs, or it can be mounted into a standard pipe socket (typically 3/4" or 1" NPT) for inline monitoring, allowing for flexible integration into existing water infrastructure.

Package Includes

  • 1 x FirstRate FST-100-YL106 Smart Residual Chlorine Sensor

Additional Information

Weight 0.411 kg
Dimensions 28 × 9 × 9 cm