Specifications 1. The large LCD display.

2. Can restore factory settings.

5. Photoelectric isolation 4-20mA current output.

Online Residual Chlorine Controller ARCL200 Application ARCL200 used for drinking water treatment plant, drinking water, tap water, swimming pool, cooling circulating water, water treatment engineering, etc.   Main features: 1. The large LCD display. 2. Can restore factory settings. 3. Manual/automatic PH compensation function and temperature compensation function. 4. Communication function (optional) : has the RS - 485 communication interface (MODBUS protocol part compatible). 5. Photoelectric isolation 4-20mA current output. 6. Hysteresis quantity any setting function, avoid switch relay frequent action. 7. Watchdog functions: ensure that instrument won't crash.   Technical indicators 1. The range of measurement: hypochlorous acid (HOCL) : 0-10.00 mg/L, residual chlorine: 0-20.00 mg/L, PH value: 0-14 PH, temperature: 0 ~60°C 2. Resolution: 0.001 mg/L, 0.01 mg/L, 0.01 ,0.1°C, pH 3. Precision: better than the plus or minus 1% or + /- 0.01 mg/L, plus or minus 1% or +/ - 0.01 mg/L, +/- 0.02 pH, +/- 0.5°C 4. Manual/automatic PH compensation function (0-14) and temperature compensation function (0 ~ 60°C). 5. Control interface: two groups of ON/OFF relay contact, divided into high and low alarm signal photoelectric isolation output. 6. Signal isolation output:4-20mA 7. The electric apparatus: relay lag quantity any setting, relay load and a 220 VAC 8. Working conditions: environmental temperature is 0 ~ 60°C, relative humidity 90% or less 9. The output load: load < 500 Ω (0-10 ma), load < 750 Ω (4-20mA) 10.Working voltage: 220 VAC plus or minus 10%, 50/60 hz 11. Dimensions: 96 x 96 x 115 mm 12. Open hole size: 91 x 91 mm