This instrument utilizes the DPD colorimetric method to detect residual chlorine concentration. It offers precise measurement, cost-effectiveness, and low maintenance, making it suitable for residual chlorine monitoring in chlorination disinfection processes and drinking water distribution networks. With a 30-day continuous reagent supply enabling unattended operation, it significantly reduces operational and maintenance costs. Ideal for residual chlorine measurement in tap water, circulating cooling water, wastewater treatment chlorination processes, and municipal water pipeline networks.

>>Features‌‌
▪ Wide power input, 7-inch touchscreen design.
▪ DPD colorimetric method for more accurate and stable measurements.
▪ Adjustable measurement cycle.
▪ Automatic measurement and cleaning.
▪ External signal input to control measurement start/stop.
▪ Selectable automatic or manual mode.
▪ 4-20mA and RS485 outputs, relay control.
▪ Data storage with USB export support.

>>Technical Parameter

‌Measurement Principle‌	DPD colorimetric method
‌Measurement Range‌	0-5 mg/L (ppm)
Resolution‌	0.001 mg/L (ppm)
‌Accuracy‌	±5%
‌Cycle Time‌	Adjustable from 5-9999 min (factory default: 5 min)
‌Display‌	7-inch color LCD touchscreen
‌Power Supply‌	110-240VAC, 50/60Hz; or 24VDC, 20W
‌Analog Output‌	4-20mA output, Max. 750Ω
‌Digital Communication‌	RS485 Modbus RTU
‌Alarm Output‌	2 sets of contacts: (1) Sampling signal control (2) Hi/Lo alarm points with hysteresis setting, 5A/250VAC, 5A/30VDC
‌Data Storage‌	Historical trends and 2-year data storage, supports USB export
‌Operating Conditions‌	Temperature: 0-50°C; Humidity: 10-95%, non-condensing
‌Protection Rating‌	IP65
‌Dimensions‌	350×450×200mm
Weight‌	11.0kg
‌Flow Requirements‌	Recommended flow rate: 300-500 mL/min; Pressure: 1 bar

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products details

Online Colorimetry DPD FCL Residual Chlorine Analyzer Wall Mounted

Online Water Quality Monitor

Multi Parameter Water Quality Monitor

PH ORP Meter

Conductivity Meter

Dissolved Oxygen Meter

Ion-selective Meter

Residual Chlorine Meter

Turbidity Analyzer

TSS Analyzer

COD Analyzer

Optical Water Quality Sensor

Ultrasonic Meter

Water Quality Monitoring Accessories

Online Water Quality Monitor

Drinking Water Monitoring

Industrial Wastewater Monitoring

Aquaculture water Quality Monitoring

Boiler Water Monitoring

Multi Parameter Water Quality Monitor

PH ORP Meter

PH ORP Transmitter And Sensor

Portable PH ORP Meter

Desktop PH ORP Meter

Conductivity Meter

Conductivity Transmitter And Sensor

Portable Conductivity Meter

Desktop Conductivity Meter

Dissolved Oxygen Meter

Dissolved Oxygen Transmitter And Sensor

Portable Dissolved Oxygen Meter

Desktop Dissolved Oxygen Meter