Chlorine is an ideal disinfectant. But while proper residual chlorine levels ensure that water is safe, too much can cause environmental harm and harm organoleptic properties. That’s why it’s important that the chemical be accurately monitored.

The Model Q46H/79PR Total Chlorine Measurement System from Analytical Technology, A Badger Meter Brand, is a highly versatile online monitoring system designed for the continuous measurement of total chlorine in solution. It is well suited for potable water systems, water reuse systems, cooling towers and for monitoring wastewater treatment effluents. According to Bill Popp, North America sales manager, water quality for Analytical Technology, the basic sensing element used in the total chlorine monitor is a three-electrode amperometric membrane sensor that measures chlorine directly. The chlorine measurement does not alter the sample or add any chemicals to the sample stream, so the water flow can return to the system if desired.

“This direct measuring system does not require the addition of chemical reagents to measure total chlorine,” he says. “That means that the unit can be deployed for months without having to change anything. Reagents typically need to be maintained on a monthly basis.”

In addition to total chlorine measurement, the Q46/79PR is also available with an optional pH input which provides a two-parameter monitoring system. It can be supplied complete with sample flow controls mounted to a PVC back plate ready to mount. Simply connect the power, water sample, and analog/relay outputs and you’re ready to go. Systems are available with or without a flow switch for remote indication of loss of sample.

“Its simplicity in design means less investment in replacement parts, and because it takes less manpower to operate, the overall operating cost is very manageable,” says Popp. “The fact that we were able to add features like a pH input to its basic functionality makes it all the more valuable in water and wastewater applications.”

Popp added that while Analytical Technology has offered chlorine monitoring systems for years, technological advancement has necessitated multiple upgrades to the legacy system.

“We’ve evolved from an analog to a digital world, and our chlorine measurement system certainly reflects that,” he says. “Every upgrade we’ve made has been customer driven. That’s why even though this is our most popular product, it will always evolve.” 800-959-0299; www.analyticaltechnology.com