In a disinfection unit, the chlorine flow rate is set by?

The chlorine flow rate in a disinfection unit is primarily set by the rotameter. A rotameter is a device that measures the flow rate of liquids and gases in a precise manner. It consists of a tapered tube and a float that rises and falls within the tube, allowing operators to visually see the flow rate indicated on a scale. This measurement is crucial for maintaining the proper concentration of chlorine for effective disinfection.

Setting the chlorine flow rate accurately ensures that the system delivers the correct amount of chlorine needed to achieve the desired disinfectant level in the water. If the flow rate is too high or too low, it can lead to insufficient disinfection or excess chlorine, both of which can pose health risks.

The cylinder valve controls the overall release of chlorine from the cylinder but does not directly measure the flow rate. The water flow rate at the injector influences how chlorinated water interacts with the incoming water, but it does not determine the chlorine flow rate itself. The emergency shut-off valve is designed to halt the flow of chlorine in case of an emergency and is not involved in setting or measuring the flow rate under normal operating conditions.