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POOL AND SPA CONTROLLERS

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CONTROLLER MODEL SELECTION

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AUTOMATED POOL TREATMENT

Water treatment in swimming pools and spas is designed to protect the health and comfort of swimmers and bathers.  The primary objective is to prevent the growth of germs and bacteria by maintaining a safe level of sanitizer (chlorine or bromine and/or ozone).  Most dangerous are E. coli in pools and A. Pseudomonas in spas.  They both can cause fatal diseases.

Numerous studies by health departments in many countries have shown that the Oxidation-Reduction Potential (ORP or Redox) generated by the sanitizer is the most reliable indicator of both sanitizer activity and sterilization of germs and bacteria - far superior to conventional test kit measurements.

Key parameters that can maintained automatically with CHEMTROL® controllers are listed below.

ORP CONTROL

With chemical automation, the ORP level of the sanitizer in the water can be constantly monitored with an electronic sensor.  The simple and inexpensive CHEMTROL® CH230 ORP Digital Controller maintains the proper ORP level automatically by addition of small amounts of sanitizer when (and only when) it is needed to maintain safe sanitation.

pH CONTROL

The activity of the sanitizer is strongly affected by the acid/base balance in the water, which is measured as pH.  The CHEMTROL® CH250 and CHEMTROL® PC2000 ORP/pH Controllers also monitor the pH of the water simultaneously with an electronic sensor and add the proper amounts of acid or base when needed.

FREE CHLORINE CONTROL

The new PPM Sensors allow direct measurement of free chlorine concentration in ppm (parts per million) or mg/l (milligrams/liter). This more expensive sensor measures actual free chlorine concentration instead of free chlorine activity as measured by the ORP sensor. It is available with the CHEMTROL® CH255 and CHEMTROL® CH265 Digital controllers and with CHEMTROL® PC controllers (see below).

TDS CONTROL

High levels of Total Dissolved Solids (TDS) also reduce the effectiveness of the sanitizer and produce eye and skin irritation.  The dissolved solids also increase the ionic conductivity of the water.  The CHEMTROL® PC3000 and CHEMTROL® PC5000 Programmable Controllers therefore monitor the conductivity of the water with an electronic sensor and automatically dumps required amounts and replaces it with fresh water when needed. This is also an option with the CHEMTROL® PC2100 and CHEMTROL® PC2000 controllers.

FILTRATION PROGRAMMING

Proper filtration is also required to maintain clean and clear water.  The CHEMTROL® PC6000 and CHEMTROL® PC7000 Integrated Controllers monitor the pressure in and out of the filters with electronic sensors and backwashes automatically when needed.

REMOTE OPERATION

Finally, modern technology allows remote monitoring of controllers through telephone lines or the internet with the CHEMCOM® Communications Program. This includes remote operation, data logging, data downloading and customer support.

MODEL SELECTION

CHEMTROL® offers the largest selection of controllers for automated water treatment of swimming pools and spas with a choice of controllers adapted to each installation.  All controllers are based on the most advanced and reliable electronic technology with over 50,000 units installed worldwide since 1976.  For advise on model selection, call our Sales Department at 800-621-2279.

As shown below, CHEMTROL® offers the most advanced line of electronic controllers for monitoring and control of water chemistry in pools and spas.

INTEGRATED CONTROLLERS
  • The CHEMTROL® 7000 Integrated Controller features the new PPM sensor for Free Chlorine and duplex operation by remote computer. It is the most advanced and most complete command center for automated water treatment in swimming pools, spas, cooling towers and industrial water treatment. It monitors and controls the chlorine concentration in in PPM (parts per million), an oxidizer in mV of ORP and the pH of the water. It includes water balance control, heater control and remote operation by computer or telephone. It also includes pump and filter programming capability with automated sequential filter backwash cycles.
  • The CHEMTROL® 6000 Integrated Controller monitors and controls the sanitizer concentration either in ORP or in PPM (parts per million) and the pH of the water.  It includes water balance control, heater control and remote operation by computer or telephone. It also includes pump and filter programming capability with automated sequential filter backwash cycles.
PROGRAMMABLE CONTROLLERS
  • The CHEMTROL® 5000 Programmable Controller features the new PPM sensor for Free Chlorine. It monitors and controls the chlorine concentration in in PPM (parts per million), an oxidizer in mV of ORP and the pH of the water. It includes optional water balance control, heater control and remote operation by computer or telephone.
  • The CHEMTROL® 4000 Filter Controller includes pump and filter programming capability with automated sequential filter backwash cycles. Also included is heater control with fireman safety and energy saver program and remote computer operation with true duplex Windows software.
  • The CHEMTROL® 3000 Programmable Controller monitors and controls the sanitizer concentration either in ORP or in PPM (parts per million) and the pH of the water. It includes optional water balance control, heater control and remote operation by computer or telephone.
  • The CHEMTROL® 2100 Programmable Controller monitors and controls the sanitizer concentration either in ORP or in PPM (parts per million) and the pH of the water.  It includes optional free chlorine control, heater control and remote operation by computer or telephone.
  • The CHEMTROL® 2000 Programmable Controller monitors and controls the sanitizer concentration either in ORP or in PPM (parts per million) and the pH of the water.  It includes optional heater control and remote operation by computer or telephone.
DIGITAL CONTROLLERS
  • The CHEMTROL® 265 PPM/pH Digital Controller features the proprietary new sensor for Free Chlorine. It monitors and controls Free Chlorine and pH with proportional feed control, adjustable overfeed and out-of-range alarms and 4-20 mA outputs.
  • The CHEMTROL® 255 PPM/pH Digital Controller features the proprietary new sensor for Free Chlorine. It monitors and controls Free Chlorine and pH with proportional feed control and adjustable overfeed and out-of-range alarms.
  • The CHEMTROL® 250 ORP/pH Digital Controller monitors and controls the ORP of the sanitizer and the pH of the water with proportional feed control and adjustable overfeed and out-of-range alarms.
  • The CHEMTROL® 240 pH Digital Controller monitors and controls the pH of the water. It includes proportional feed control and adjustable overfeed and out-of-range alarms.
  • The CHEMTROL® 230 ORP Digital Controller monitors and controls the ORP of the sanitizer for use with neutral-type sanitizers. It includes proportional feed control and adjustable overfeed and out-of-range alarms.

For more detailed information on model selection, visit our Product Line page.

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