EBME Forums Forums Maintenance Test Equipment About Fluke VT650 gas flow analyzer

This is an analyzer of my friend. He bought it 5 years ago and it has been working fine. The firmware version is 1.01.
Now this host has a problem. The problem is that the pressure cannot be returned to zero. In simple terms, it cannot be used.

I disassembled the host. Since it is beyond the manufacturer's warranty period, if I want to repair it now (I mean looking for FLUKE service), I need to pay additional service fees.

I disassembled it in the hope that friends who buy the same type of host will be cautious in purchasing, because the quality is not reliable.
In addition, I have not been able to find the entrance to VT650 calibration. If you have the same interest, please contact me. Thank you.