Cooltrol Data K Conductive Blowdown Units

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Herco Wassertechnik GmbH

Neckar, Germany

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The conductive sensor-equipped, pre-assembled blowdown unit is used to automatically regulate the amount of salt in the circulating water in humidifier and cooling circuits. Blowdown, turning on the circulation pump, and managing up to three dosing pumps (one volume-controlled for the hardness stabilizer and two time-controlled with a monthly timer for biocide 1 and 2) are among the features of the control system. The included micro SD card (4 GB) allows for data logging in compliance with the 42nd BImSchV.

                                                            Controller
                                                            Cooltrol data
                                                        
                                                            Cabel length
                                                            2 m
                                                        
                                                            Reference temperature
                                                            25 °C
                                                        
                                                            Output blowdown valve
                                                            Mains voltage, max. 4 A
                                                        
                                                            Output volume-prop. dosing
                                                            open collector
                                                        
                                                            Output time-prop. dosing 1/2
                                                            floating, max. 250 V AC / 3 A
                                                        
                                                            Warning output
                                                            floating, max. 250 V AC / 3 A
                                                        
                                                            Fault output
                                                            floating, max. 250 V AC / 3 A
                                                        
                                                            Protection class
                                                            IP 65
                                                        
                                                            Operating signal
                                                            floating, max. 250 V AC / 3 A
                                                        
                                                            Current output
                                                            4 - 20 or 0 - 20 mA active
                                                        
                                                            Conditions of use
                                                            The unit may only be used to control or measure conductivity in open cooling circuits and humidifiers and for dosing biocides in water-bearing systems.
                                                        
                                                            Operating pressure
                                                            0.2 – 6.0 bar
                                                        
                                                            Operating temperature
                                                            0 – 40 °C

Utilization of Conductive Blowdown Units
For managing concentration cycles in open cooling circuits or air humidifiers, as well as managing up to three dosing pumps (one volume-controlled hardness stabilizer pump and two time-controlled biocide 1 and 2 pumps with a monthly timer).

Advantages of Conductive Blowdown Units
One of the four functions—circulation pump, volume- or time-proportional dosing, blowdown—is being operated by an operating message.
The display changes color to indicate warning or fault signals, making them instantly visible.
When the blowdown valve (motorized ball valve) is de-energized, it closes, preventing the system from running empty in the case of a power outage.
Micro SD card data is easily readable

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