The Q46H Chlorine Monitor (Analyzer, Transmitter) system uses a polarographic membraned sensor to measure chlorine directly, without the need for chemical reagents. When needed, automatic pH compensation may be added for increased free chlorine measurement accuracy. Systems are available to provide outputs for chlorine, pH, and temperature to allow easy Contact Time (CT) calculations.
Q46H systems are economical to purchase, easy to maintain, and provide long term accuracy and reliability for your chlorine monitoring needs.
SENSOR & FLOWCELL OPTIONS.
Two types of chlorine sensors are available, one designed for flowcell installation and one for submersion applications. Free chlorine monitoring should always be done using a flowcell system. Good control of sample flow and pressure is important for accurate measurement, and the standard constant-head flowcell should be used for most applications. A sealed flowcell and a low-volume flowcell are also available for special applications. Consult your ATI representative for application assistance.
Submersible combined chlorine sensors can sometimes be used for measuring total chlorine in wastewater effluent. Wastewater effluents containing more than 1 PPM of ammonia often result in a chlorine residual that is more than 90% monochloramine. Direct measurement with a submersible sensor can provide a dependable monitor without all the sampling and chemicals associated with total chlorine measurement.
Chlorine sensors, especially free chlorine, require up to 8 hours of stabilization time when first installed or after membrane change. ATI offers a battery powered “polarizer” that can be used to stabilize a spare sensor so it is ready to run within a few minutes of installation. Polarizers simply plug into the sensor connector and require no adjustments.
Free or Combined Chlorine. Q46 Monitors are factory set for either Free or Combined Chlorine measurement, but can easily be converted from one to the other in the field.
Flexible Operating Range. Monitors may be programmed for display ranges of 0-2, 0-20, or 0-200 PPM, and a 0-200 PPB range is available for chlorine breakthrough applications.
Economical Operation. Reagent-less operation and lowparts cost makes the Q46 your best choice for chlorine monitoring applications in potable water, wastewater,cooling water, or high purity water systems.
AC or DC Power Options. Units are available for operation from AC power (100-240 VAC) or from low voltage DC supplies (12-24 VDC).
Automatic pH Compensation. For free chlorine monitoring under widely varying pH conditions, automatic pH compensation may be added to maintain the highest measurement accuracy at pH levels up to 9.5.
Dual Chlorine/pH Monitoring. Even when pH correction is not required, adding a pH sensor to the system converts the monitor to a dual analyzer, providing 4-20 mA outputs for both chlorine and pH.
Three Analog Output Options.A third analog output may be added to provide outputs for chlorine, pH, and temperature.
Ideal for applications where CT calculations are desired.
PID Output. When chlorine control is desired, one 4-20 mA outputs may be configured for PID control of chlorine free equipment.
Relay Outputs. Monitors provide 3 standard SPDT relay outputs. Three additional low-power SPST relays may be added if needed for special applications.
Digital Communications. Q46 monitors are available with digital outputs. Options include Profibus-DP, Modbus, or Ethernet.
Key Words: Free Chlorine, Chlorine Residual, pH compensation, dual analyzer