Low Maintenance Lower Cost
This highly integrated chlorine sensor performs a total of five measurements with only four electrodes

and much of the same circuitry; the cost of the sensor is dramatically less than several discrete sensors.
This new chlorine sensor platform enables the measurement of five parameters a total of only four electrodes and a temperature sensor. This lowers the cost, improves the reliability and accuracy of the sensor by using the same electrodes and much of the same circuitry for multiple measurements (Patent Pending).
A single temperature sensor is used for temperature compensation of chlorine, conductivity and pH.
Long Life pH Sensor
A major problem with conventional Combination pH Sensors is the loss of concentration of the electrolyte gel. This is an acute problem for drinking water applications
Up to One Year Without Calibration
Since there are no membranes or electrolyte to replace, a significant maintenance requirement is eliminated. There are no buffer solutions or reagents required for operation.
Integrated Conductivity Sensor
An integrated conductivity sensor means that in many applications additional conductivity monitors are unnecessary.
Rapid Response ORP™
This method of ORP measurement resists poisioning with organics and responds much to faster to disturbances. By sequentially measuring ORP (for 5 seconds), a potential is impressed on the measuring electrode
Wide pH & Temperature Range
Most of the “reagentless” amperometric chlorine sensors use a membrane and electrolyte to control the reactions at these electrodes. These systems usually require elaborate pressure and flow control.
Direct Connection to a PLC
Designed for thedirect connection to a PLC or other OEM equipment, a 4-20 mA output for both chlorine and pH are included. Addition of Modbus over RS485 is also underway. The system operates on 24VDC power.
Noise Immunity
HSI has patented a method of using one of the chlorine electrodes as an isolated floating ground. This virtually eliminates the pH circuit from the effects of ground loops due to stray currents that are frequently present in many process systems.