Can I mount my micron gauge onto the vacuum pump?
It is not recommended to do so as you are reading what the pump is doing and not what the pump is doing to the system (see DV-29). It is suggested that you tee off on the suction side of the system and mount the gauge there.
question for vacuum pump and vacuum gauge
IMPORTANT- Always check the oil level with the vacuum pump running
Why do I need to check the oil level when the pump is running?
How low of a vacuum should we pull on a system?
Can I mount my micron gauge onto the vacuum pump?
I am able to pull a vacuum on my system, but when I blank-off, the micron gauge rises rapidly.