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Control Unit
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CONTROL UNIT with flow control and adjustment system


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ETATRON D.S. S.P.A.
Rome, Italy
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Control and regulating system for free chlorine and pH, made of the eSELECT-M2 controller, block valves, connection for tube 10x14 mm, water filter with washable net cartridge 150 microns, methacrylate probe holder with proximity switch and adjustment flow system, manual sampling,  free inorganic and organic chlorine probe, (0 – 20) ppm measuring range, probe show low pH dependence (pH working range 4-12 pH), chlorine measuring is not affected by isocyanuric acid, surfactants/flocculants presence, the probe is automatically temperature compensated, 0,7 mt probe cable, pH electrode with plastic body with cable 1 mt (Tmax=60° C Pmax=6 bar) working range 0÷14 pH, 3 buffer solution 55ml bottles  (pH 4, 7, and 9), 2 manual pump wiring connections are available in the central box trunking. The unit required a constant flow rate between 30 and  40l/h and does not exceed the maximum operating pressure of 1 bar (free discharge at probe holder outlet) while water temperature cannot overcome  45°C. The probe has integrated temperature compensation. Suitable for software EtaCloud connection; optional accessory: connectivity kit.  Panel dimensions 400 x 600 x 0.80 mm 
 

Model PH-CL-F P
Measures pH(Rx)-pH(Rx) ; pH(Rx)-CL ; pH(Rx)-CD pH or Redox (programmable from the user)
Range pH 0…14,00 Redox (mV) -1000…+1400 Chlorine (ppm) 0…2 / 0…10 / 0…200 Temperature (C°) 0…100 Conductivity 0…20mS (2)
Display Graphic backlighted 128x64
User Interface Keyboard 4 keys
Relay 5 A - 230 V, free contact
Box 120x200x90,5 in ABS, protection degree IP65
Hysteresis Programmable on the setpoint value
Delay Programmable with setpoint value to close or open the relay contact
Outputs n.2 4-20 mA, signals programmable from the user 500 ohm maximum load impedence, with galvanic separation
Auxiliary output Relay connected with timer function
Power supply 100,,,230 V – 50/60 Hz – 6W
RS485/Ethernet Modbus protocol with Etacloud software, for the remote control via PC, smartphone or tablet



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