Hi I have recently bought testo 417.
I have set it up as I believe it should be.
I require the readings in l/s and so I have set it to do so.
I am using the testo funnel cone so I have set the F.Fact on.
However when I take the reading it is roughly half the l/s than the calibrated Airflow LCA301 that I’m using at the moment.
I must add, the testo 417 has a calibration certificate.
Am I missing something?