Please advise on the selection of chlorine flow meters
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Has anyone used flow meters on chlorine pipelines? What model do you use? How is it working? Dry chlorine, DN65 pipeline – I’m not sure if the flow meter requires an inner lining
What is the water content of your chlorine? Is an accurate measurement necessary? What is the flow rate? If accurate measurement isn’t required and the water content is low, stainless steel material will suffice; target flow meters, vortex flow meters, orifice plates, or rotameters can all be used. For accurate measurement, a thermal mass flow meter is necessary.
I am a manufacturer of flow meters. The pressure and temperature levels are usually not high. In some cases, the rotor is driven by the flow rate. If there is no moisture present, 304 material is sufficient; however, if moisture is present, corrosion will be severe. There are those with moisture, as well as those using lined rotors and those using HC vortex flowmeters.
This is dry chlorine gas, which normally contains no moisture. We are considering using a mass flow meter; the pressure is around 0.8 MPa and the temperature is approximately 30°C. I’m not sure if there are any other options that can achieve an accuracy of within 0.5%
0.5%, for gases? That’s absurd – the precision requirement is way too high. How about Brooks? Gas? Laboratory?
I think it’s best to use a mass flow meter. . . An anti-corrosion lining is necessary. You said it deals with dry chlorine, but in reality it’s likely to contain liquid as well; unless the system is equipped with various filtering and absorption devices from the start, or the entire system has to stop operating once water gets in (for example, due to catalyst poisoning), otherwise anti-corrosion measures are essential
Any suggestions for corrosion prevention? How about using a measuring tube with HC? Are there any other good suggestions?
0.5% for gases – this is already a precision at the measurement level; it’s just a matter of mass or ultrasound. HC is not resistant to corrosion by humid chlorine; it’s not clear whether titanium is resistant or not.
HC doesn’t work either? It seems that the investment in mass flow meters is quite high. I wonder if there are flow meters with good linings available? Could any expert recommend one?
The main issue is that this diameter is rather problematic; for DN50 or 80, our vortex flow meters can achieve a precision of 0.3. I’ve checked the quality of imported products, and even some well-known brands do not offer meters in this diameter
How to prevent corrosion in vortex flowmeters? Lining? ?