FCL residual chlorine analyzer
● Monitoring of drinking water disinfectant concentration ● Automatic chlorine control in swimming pools ● Electricity, hospitals, etc.
The residual chlorine electrode is a Clark-type current sensor, which is manufactured using microelectronic technology and is used to measure the concentration of hypochlorous acid (HOCl) in water. This sensor consists of three small electrochemical-type electrodes, one working electrode (WE), one counter electrode (CE) and one reference electrode (RE). The method for measuring the concentration of hypochlorous acid (HOCl) in water is based on measuring the current generated by the working electrode due to changes in the concentration of hypochlorous acid. The working electrode WE separates the electrode surface from the analysis solution by photopolymerizing a special organic film. The temperature sensor is integrated inside the sensor for temperature compensation, which improves the reliability of temperature measurement results.
Residual chlorine sensor measurement conditions: The sensor must be used in agitated solutions (measurement accuracy is not high at this time) or in water flowing through the pipeline system. Insufficient hydration time or power on before contacting the solution will affect the sensor's measured value.
● Does not require the use of chemical reagents, saving costs;
● No need for calibration and less maintenance work;
● No need to change electrolyte and membrane, accurate measurement.
Measurement performance <br /> Range: 0-2mg / L, 0-5mg / L
Resolution: 0.01mg / L
Indication error: 0.02mg / L or ± 2%
Calibration: The instrument has been calibrated at the factory, and it can also be calibrated on site. Display: 192 × 64 pixels display, which can display concentration measurement values, current time, historical data and other data storage: automatic storage function, power-off data protection, can store, Query 10-year historical data
Output <br /> Analog output: isolated 4 ~ 20mA, maximum load 750Ω, fault state output current optional digital output: RS485 / RS232 MODBUS RTU / MODBUS ASCII / custom relay output: 3 programmable relays, can be set as alarm Function and timing function Relay capacity: 2A, 220VAC
Digital interface: MODBUS RS232 / RS485, Profibus DP Optional on-site setting: completed by the transmitter button
Power supply <br /> AC power supply: 85 ~ 265VAC, 50Hz / 60Hz
Maximum power consumption: 15W
Fuse: 2 A / 220VAC
Physical properties <br /> Material: Transmitter: PC + ABS; Sensor: PVC
Weight: transmitter: 1.5Kg; sensor: 0.5Kg
Transmitter size: 270 × 205 × 100mm
Mounting back plate size: 400 × 550mm
Cable: shielded cable Conductivity: ≥ 50μs / cm
Environmental performance <br /> Protection level: IP65 (transmitter) IP68 (sensor)
Ambient temperature: Transmitter: -20 ℃ ~ 60 ℃ Sensor: 0 ℃ ~ 50 ℃
Medium temperature: 0 ℃ ~ 50 ℃
Flow rate: typical flow rate, 0.5L / min, pipe diameter 8mm
Conductivity: ≥ 50us / cm
PH: 5 ~ 9, the residual chlorine electrode probe will be damaged when the pH is very low