Dear Mohd,

1100C is hard stuff.

You may have a look at the link:

https://www.indiamart.com/jupiterintegrated/air-velocity.html

Model: MODEL CTV 100

Sorry, it is an air velocity meter, not mass flow. But up to 1000C is specified.

But you may share on what kind of material you are dealing with; gas or liquid?

With respect to the temperature I fear that you have to look for a non-contact type of measuring principle.

I'm dealing with hot gas. I think 1000 C is good enough. I put 1100 C just to be safer when dealing with instrument, heat usually kills them. From air velocity we can calculate mass flow rate, so this can be considered. I'll try and contact them. Thanks Dr Martens