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DPD Free Chlorine / Total Chlorine Analyzer

Applications ● Drinking water: Chlorination process of waterworks and outlets, pipe networks, pipe network ends ● Sewage: Municipal sewage, industrial wastewater, disinfection process of hospital wastewater treatment ● Industry: Industrial circulating cooling water, etc. Total) Chlorine measurement.

Chlorine in water can exist in the form of residual chlorine (ClO-, HClO, Cl2, etc.) and combined chlorine (chloramine, which refers to the compound of chlorine and ammonia in water, including NH2Cl, NHCl2 and NHCl3, and other chlorine derivatives). Adjust the pH value of the water sample to an appropriate range, and the residual chlorine can make the DPD turn purple. Analyzing the change of this color can obtain the residual chlorine content. By adjusting the reagent, the DPD2000 can also measure the total chlorine concentration.

● Continuous measurement or interval measurement

● Automatic chromaticity and turbidity compensation ● The sampling, mixing, and colorimetric processes are fully sealed, fully automatic operation, and the measurement cycle is short ● The unique stirring system allows the samples to be fully mixed and the measurement accuracy is high ● The precise peristaltic pump control technology makes The reagent consumption is greatly reduced ● Simple operation, low maintenance, unattended in daily use ● Self-diagnostic function, such as alarm for lack of reagents, alarm for broken samples, etc.

Measuring performance range: 0.02 ~ 5.00mg / L (residual or total chlorine)
Resolution: 0. 0 2 ~ 1. 0 0 mg L, 0. 0 0 1 mg / L 1. 0 0 ~ 5. 0 0 mg / L, 0. 0 1 mg / L
Measurement accuracy: 1.00 ~ 5.00mg / L: ± 5% of reading or ± 0.03mg / L, whichever is greater
0.02 ~ 1.00mg / L: ± 5% of reading or ± 0.005mg / L Take the maximum minimum detection limit: 0.02mg / L
Measurement time: 2.5min
Calibration: factory calibration, no need for on-site calibration display: LCD display, Chinese operation menu Data storage: automatic storage function, power-off data protection On-site setting: completed by the transmitter button

Output analog output: isolated 0/4 ~ 20mA, maximum load 750Ω, fault current output current optional relay output: 3 programmable relays, which can be set as alarm function and timing function Relay capacity: 2A, 250VAC
Digital interface: MODBUS RS232 / RS485, Profibus DP optional

AC power supply: 85 ~ 265VAC, 50Hz / 60Hz

Physical performance structure: overall backplane panel size: 1100X350mm
Connection size: water inlet: 1/4 'water outlet: 1/2'

Environmental performance protection level: IP65
Working environment: temperature 1 ℃ ~ 40 ℃, humidity 0 ~ 90%
Sample flow: 150 ~ 500mL / min
Sample pressure range: 0.2 ~ 2bar