I have GC-7890B -TCD -FID . I want to maintain the flow of gas sample to be same as calibration gas flow . Are there any option in GC to give same flow of sample and calibration gas or shall i use flow meter at the outlet of GC .
Can you provide a few more details on the instrument and what you are trying to do?
The gas flow while calibrating the GC from calibration gas should be same as gas flow of my sample gas .
How to control the flow of gas sample and calibration gas to be constant flow ?
Usually i used to use flow meter at GC outlet to montoir the sample and calibration gas flow .
You should be able to control the flow of the GC by using the "constant flow mode" in the method, which you can find under the column section if you're using chemstation. If you know what flow you need throughout the run, then the GC will adjust the pressure to keep the flow constant.
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