High temperature, large diameter flow rate
Thread Content
For 900-degree air at 20-inch pipelines, what gauge should be used?
Actually, using an orifice plate flow meter + transmitter is the most cost-effective option
The temperature is really too high. The pipe diameter is also relatively large; high-pressure nozzles should work fine, as well as Venturi tubes. It depends on whether the installation location is convenient. However, be sure to pay attention to the material of the throttling device used, and check whether the temperature and pressure curves meet the required pressure standards.
If the installation conditions permit, it is still better to use an orifice plate with a differential pressure transmitter. But with such high temperatures, it is essential to ensure that the voltage tolerance requirements are met.
The use of orifice plates is not recommended; the pipe diameter in question is too large, which means that the orifice plates and flanges will be overly bulky, making maintenance very difficult. Moreover, flanges and orifice plates with large openings are likely to be expensive as well. Orifice plates should not be used for pipes with a diameter of DN200 or larger； The suggestion for the 2nd floor is good – using Anubaa and similar types of instruments. However, since the temperature is high, it’s recommended to use split-type instruments; also, you need to have the manufacturer do a thorough calculation for you ； I’m not sure if ultrasound is an option; I can ask for advice ； As long as the temperature requirements are met, it should be a good choice ； The above are my humble opinions; I hope they will be helpful to the original poster! :)
Anouba ah! However, a separate plan must be developed for the instrument installation diagram, and the transmitter must be installed remotely; it cannot be integrated.
The A+K balanced flow meter can be used; it has low pressure loss. The lead time for ordering is relatively long, at 16 weeks.
A uniform-flow tube type flow meter is preferable, as it offers good cost-performance for measuring flow rates in large-diameter pipes
The pipeline is lined with refractory material. For orifice plates: When asked Emerson, they replied that there is no suitable material for this purpose. Anuba: Emerson can only guarantee a temperature of up to 816 degrees (Incoloy 800H). Wiliba: They simply said it’s not possible to handle such high temperatures
Insertion-type Delta Bar flow meter, with a temperature resistance of around 1200 degrees, made of Hastelloy material.