David, Do you perhaps information about the Balzers I mentioned acoule of posts before ? I hav also an absolute pressure meter in the rack, but don't know what transducer I need... I will look tomorrow for the type number.
eric -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of David Forbes Sent: zondag 15 januari 2012 0:43 To: [email protected] Subject: Re: [neonixie-l] Homemade Nixie tubes project: Help with vacuum technology needed On 1/14/12 6:30 AM, jb-electronics wrote: > Hi, > >> Vacuum gauges are made by Varian. There's a panel meter and a little >> metal gizmo with an octal base like an old vacuum tube. Look on ebay. > > thanks, I did. The actual gauges are quite pricy, maybe I can use a > more ordinary pressure sensor and build a gauge of my own. > > Thanks again, > Jens > An ordinary pressure sensor is useless for below 10 mbar, since the resolution is poor. The fancy ones use an ionization sensor to get an accurate reading at very low pressure. And I made a mistake - it's not Varian you want, but Hastings. Google for 'hastings vacuum' and you'll find lots of meters and sensors. The meters are $150-250 and the sensors are $50-100. But they work well. The other brand of vacuum gauge that we use is Pfeiffer/Balzers, but they are really expensive. They go down to the microtorr level, though. -- David Forbes, Tucson AZ -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
