Amperometric Total Chlorine Analyzer 



What It Does For You

The Foxcroft FX-CL-T amperometric total chlorine analyzer gives you a hassle free, lower cost way to measure total chlorine residual.

Its continuous measurement and output is best suited for monitoring and process control in drinking water, wastewater effluent, sea water and pool water.

Stability, no need for pH sensor calibration and no chemicals to replace makes the analyzer a good choice for unmanned booster stations or anywhere that hands off operation is needed.

Total Chlorine Probe

The membrane covered three electrode amperometric sensor measures the sum of free and combined chlorine (chloramines) and organically bound chlorine.

It cannot distinguish between different species of chloramine.

3-electrode circuitry eliminates zero point drifting for more stable readings.

No zero point calibration is necessary.

Easy to Operate and Maintain

With no moving parts or potassium iodide to replace it has lower maintenance and ownership cost compared to reagent based systems.

Simple operation and maintenance of the system can be performed by your operators without paying for start up assistance and allows you to avoid costly service contracts.

Reduced pH Effects

The effect of pH on residual measurements is less than many standard sensors. The sensor operates within a range of 4-9pH.



Standard Features

The analyzer comes pre-assembled with everything needed on a 12" x 24" PVC panel.

User friendly interface and glass touch screen make it simple to commission, calibrate and use for typical operators.

Choice of sensor operating ranges: 0.05 - 0.5, -2, -5, -10 and  -20mg/l (ppm).

For convenience the 4-20mA output is automatically scaled when the operating range is set.

(2) 1A SPDT relays for high and low chlorine

All inputs and outputs are protected against over voltage.

The polycarbonate enclosure features a UV stabilized clear door to protect the touchscreen whether mounted indoors or outdoors. The cover panel swings out for easy field wiring access.

Options include temperature measurement and output, no flow alarm and data logging.


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Works in Most Common pH Ranges

The acidified electrolyte within the sensor's membrane cap enables the sensor to be less affected by pH fluctuations and work in the pH ranges maintained by most drinking water and wastewater treatment facilities without buffering the water sample with an acid.

Chlorine ionizes as a function of pH, meaning that as pH rises, less active chlorine is available and measurable by the sensor. At lower pH levels more chlorine is present in the form of hypochlorous acid and measurable by the sensor.

See the sensor response to various pH levels in the chart to the right.

Total chlorine cannot be compensated for pH by using a pH sensor and algorithm due to the speed and complexity of chemical reactions between chlorine, nitrogen forms including ammonia, pH, temperature, dissolved solids and ionic strength.

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Consider Carefully for Wastewater

The process solution must not contain oils and greases or detergents and cleaning agents.

Use in clear tertiary treatment effluent is possible.

For most wastewater applications or potable water with elevated levels of iron, manganese, suspended solids or hydrogen sulfide we recommend the bare electrode model FX-CLv2 which is more tolerant of poor water quality.

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