Gas chlorinators use a rotameter to meter chlorine in what units?

Gas chlorinators use a rotameter to meter chlorine in what units?

• A. Kilograms per hour
• B. Pounds per day
• C. Grams per minute
• D. Pounds per hour

Answer: (B)

Gas chlorinators use a rotameter that is calibrated to read chlorine flow in pounds per day because dosing is typically specified and controlled as a daily mass amount. The rotameter’s internal scale is set so the operator can directly read how many pounds of chlorine will be fed over a 24-hour period, making it straightforward to meet a target daily dose for disinfection. This mass-per-day reading aligns with how plant dosing plans are written and how chemical usage is tracked and managed. In practice, a rotameter measures gas flow, but the device is calibrated for chlorine gas density under standard conditions so the reading corresponds to pounds (mass) per day rather than a volume rate like kilograms per hour, grams per minute, or pounds per hour. This setup simplifies ensuring the correct total chlorine applied each day, regardless of short-term fluctuations in flow.

Gas chlorinators use a rotameter that is calibrated to read chlorine flow in pounds per day because dosing is typically specified and controlled as a daily mass amount. The rotameter’s internal scale is set so the operator can directly read how many pounds of chlorine will be fed over a 24-hour period, making it straightforward to meet a target daily dose for disinfection. This mass-per-day reading aligns with how plant dosing plans are written and how chemical usage is tracked and managed.

In practice, a rotameter measures gas flow, but the device is calibrated for chlorine gas density under standard conditions so the reading corresponds to pounds (mass) per day rather than a volume rate like kilograms per hour, grams per minute, or pounds per hour. This setup simplifies ensuring the correct total chlorine applied each day, regardless of short-term fluctuations in flow.