I would like to ask everyone, which type of flow meter is more suitable for measuring chlorine gas flow?
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I would like to ask everyone, which type of flow meter is more suitable for measuring chlorine gas flow? Looking forward to your reply, thank you!
For simple process metering, vortex flowmeters are recommended. For chlorine measurement, a special option is available that involves silver plating the vortex element to protect it from chlorine corrosion. The Yokogawa Electric DY series has this option. Additionally, metal rotameters made of fluoroplastic lining can be used. For trade measurement, a mass flow meter can be used, but it requires frequent calibration.
Why do mass flowmeters need to be calibrated frequently?
As someone who has had bad experiences with chlorine measurement, I recommend avoiding flow meters that contain any components inside the tube; instead, consider straight-through types such as differential pressure flow meters and mass flow meters. Previously, because chlorine contained nitrogen trichloride, the vortex flow meters and rotors would get clogged after just two days of use; later on, wedge flow meters and mass flow meters were used instead
Thank you all, but I still don’t know which one is better :)
The fourth floor is the correct answer; what’s there to be confused about? Chlorine is dirty and costly; for simplicity, go with a rotor type – it’s easy to use. Just choose one with a PTFE lining, and don’t forget to include a damper. Chlorine cleaning is used, and there is no vibration in the pipes; the installation distance meets the requirements, so vortex flow meters are chosen – either those with silver plating or those that are fully HC-type. For chlorine cleaning, external trade metering, and precise measurement, choose Mass Flow – it ensures accuracy, though at a higher cost. Use HC or tantalum as the material for liquid contact.
Regarding the wedge-shaped element mentioned on floor 7… I thought about it for a moment… How dirty would the chlorine gas have to be to require the use of a wedge-shaped element? If it’s that dirty, it will be impossible to obtain accurate measurements using such an element. Orifice plates and wedge-shaped differential pressure flow meters can be used to measure chlorine gas without any problems; if necessary, backwashing can also be employed. But I just think that a metal rotor is enough to solve the problem; a differential pressure flow meter seems a bit excessive… The orifice plates used for measuring chlorine aren’t cheap either……
A lot has been said upstairs; it mainly depends on your actual manufacturing capabilities to make the choice.