E.W.S. presents a new filter/softener water treatment controller: SFS8000We are a leading company in the water treatment microprocessor manufacturing industry. Our products are devices specially designed for the water treatment industry.E.W.S. presents a new cooling tower water treatment controller: CTS8000E.W.S. presents a new ultrafiltration water treatment controller: UFS8000Water treatment products | E.W.S | water treatment controllers - accessoires - chemical testkits


Wall-mounted cooling tower controller with conductivity meter and level switch for the control of an inlet valve

AS3035 cooling tower controller a wall-mounted cooling tower controller with conductivity meter and level switch for the control of an inlet valve


The AS3035 (wall-mounted) cooling tower controller is designed for fully automatic monitoring and controlling of cooling tower systems. By means of an optional plug-in card IF2030, the control options can be further extended with one programmable input and two programmable outputs. Via plug-in card IF2030 an inlet valve can be controlled to add water to the system. The inlet valve is controlled by a level switch that can also be connected to the plug-in card. The controller is equipped with a conductivity meter.


  • User operated programming using double row of illuminated LCD display.
  • Display text in English, French, German, Italian, Spanish, Swedish, Danish or Dutch.
  • Simple control utilizing easy to follow symbols.
  • Built-in audio signal for 9 programmable signal indicators.
  • Adaption to user specific requirements by means of options programmable on site.
  • Simple operation by means of a few clear operating symbols.
  • Locking of programming possible by use of a code number.
  • Flushing depending on water meter, conductivity and both water meter and conductivity.
  • Input of service telephone number.
  • Extensive status report facility using information button.
  • 2 inputs (fixed function) : water meter and dosing tank 1 empty.
  • 2 programmable inputs : block flushing, dosing tank 2 empty, stop.
  • 1 optional programmable input (IF circuit board) : level switch in tank, stop
  • Inputs programmable active open or closed.
  • 1 connection for conductivity sensor (cell constant programmable from 0,01 to 10,00 cm-1).
  • Manual temperature compensation.
  • 2 relay outputs with fixed function : flush valve (powered), dosing output (dry contact).
  • 1 programmable relay output (dry contact): shot dosing, alarm
  • 2 optional programmable relay outputs (dry contact): flush valve, shot dosing, alarm, flow pulse. (IF circuit board).
  • Output relay programmable active under current or not under current.
  • Secure from power failure as all data is stored long-term without battery.
  • Efficient micro controller with watchdog, illegal operation code and cycle monitoring.
  • Safeguarded from EMC by galvanic separation between microcontroller and in- and output circuits and also by additional interference suppression filter.
  • Available for wall mounting.
  • Available (input /output) : 24/24VAC, 115/115VAC, 230/230VAC, 115/24VAC, 230/24VAC
Manuals United Kingdom France Germany The Netherlands Italy Spain Sweden Denmark
Product briefUnited Kingdom       
Application notesUnited KingdomGermanyThe Netherlands     
Exchanging EPROM     
EMC problems     


Embedded software

Hex file(s) for updating the controller



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