What Standards are now in use for Vacuum Gauge Calibrations?
The CVC GPH 320C is obsolete and I was looking a a simular gage to Zero our MKS Gages. What is a suitable replacement?
There is a variety of options available. I have an MKS system, and use a combination of mechanical pump to get down to around 100 mT or so, then the Alcatel turbo to go down to 10E-06 Torr. There are a variety of reading gauges that go down pretty low by MKS (can't think of the company that owns them now - but they are still around).
We own a custom built three pump system that will pump down to 10E-07 Torr. It utilizes Pfeiffer Vacuum pumps, MKS spinning rotor gauges, a Granville-Phillips (GP) controller with GP and Duniway Stockroom Corp ionization gauges, and a LDS controller with LDS convectron gauge tubes. We are going to have to add or upgrade turbo pumps in the near future to be able to achieve somewhere in the 10E-12 Torr range. Any suggestions?
We have a turbo pump and the MKS standards with Isolation valves. Got a 690AA donated to our lab from Farley I&C. Finally got to test it and it's cool standard. Come with 270A indicator. Going to send it out for calibration so we can use it for some onsite calibrations and in lab cals.