(Urgent) What type of flow meter can be used to measure hydrofluoric acid?
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May I ask what type of flow meter can be used to measure hydrofluoric acid? The flow rate is very low, ranging from 2.5 L/h to 3.5 L/h. The temperature is 70–80°C, and the pressure is at atmospheric level. It would be great if you could provide the manufacturer name as well as the material and model of the flow meter. Thank you all
The flow rate is very low; it seems that glass tube rotors cannot withstand HF acid. Consider using a small, contactless type such as an electromagnetic flowmeter. The material of the electrodes needs to be determined by consulting the manufacturer based on the properties of HF acid – materials like Hastelloy or tantalum should work. This post was last edited by hwindforce on 2009-2-24 at 22:07
I checked, and this flow-rate glass rotor is suitable for use. It seems that it needs some modification in order to be used for measuring hydrofluoric acid. Even domestic electronic flow meters, even those of the 2DN type, are not capable of measuring such flow rates. Cost is also a factor to consider... so it’s quite difficult
We have always used differential pressure transmitters made of Monel; foreign brands such as Emerson and Honeywell can also be considered. Electromagnetic flowmeters were also tried, but the results were not satisfactory. Various solutions were attempted, yet ultimately a Monel differential pressure transmitter proved to be the better choice.