Select a gauge with a pipe diameter of DN200, a pipeline pressure of 2~7 kPa, and a medium of 65% HCl hydrogen chloride gas (which may contain water vapor)!
Thread Content
Select a gauge with a pipe diameter of DN200, a pipeline pressure of 2~7 kPa, and a medium of 65% HCl hydrogen chloride gas (which may contain water vapor)! It is required to minimize diameter reduction (a slight reduction can still be considered); the gas is highly corrosive, so all process pipelines are lined with PTFE. Are there any instruments that can be used under the same operating conditions? The instruments also need to be lined with PTFE or other corrosion-resistant materials. It’s best if the instrument comes with the manufacturer’s name. The instruments under consideration include rotor type, wedge type, target type, positive displacement type, orifice plate type (seems to not be suitable for sufficient pressure), and thermal type (problems with water content). . . Everyone is welcome to add, discuss, and offer suggestions! @Everyone
I need a flow meter. The process pipelines are large in size and operate at low pressure; the medium is a corrosive gas that may contain water. Everyone is welcome to discuss this!
Cologne, PTFE-lined rotameter
Mass flow meter, Anubis. The pipeline is installed vertically. From a process perspective, a liquid collection tank can be added below.
Use a vertical pipe with a rotameter
First, it is necessary to determine whether it is trade handover, inter-unit metering, or process control monitoring. Next, consider accuracy, reliability, and cost.
A metal rotameter lined with 4F could be considered, but the accuracy will not be very high, and water vapor adhering to the float can have an impact. (Only for vertical pipes) Orifice flow meters can use small holes at the bottom for measurement, but the accuracy of such measurements is not very high. (Using anti-corrosion materials is very expensive.) I don’t have any practical experience with other options in this regard, so I dare not comment!
For rotameters, one should consider using PTFE lining to prevent corrosion. Manufacturers: Cologne, Yokogawa
The pressure used for flow calculation is too low, so the float cannot rise; aside from rotameters, are there any other fluorocarbon-coated instruments that work well when high precision isn’t required?
It would be best if the poster could provide the traffic range as well as the maximum amount of necking that can be tolerated in millimeters