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 Fri Jul 27 14:28:36 2012, steve, Update, VAC, cold cathode gauges 
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 Mon Jul 30 15:49:16 2012, steve, Update, VAC, cc1 switched
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Tue Jul 31 08:01:22 2012, steve, Update, VAC, cc1 switched
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Mon Aug 6 10:53:32 2012, steve, Update, VAC, status: vauum normal
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Message ID: 7051
Entry time: Mon Jul 30 15:49:16 2012
In reply to: 7044
Reply to this: 7056
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| Author: |
steve |
| Type: |
Update |
| Category: |
VAC |
| Subject: |
cc1 switched |
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| Quote: |
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Our cold cathode 423 gauges are 10 years old. They get insulated by age and show no ionization current. We should replace them at the next vent. I'm buying 4 at $317ea
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We have two CC1 gauges at the pump spool. One is in vertical position and the spare is in horizontal. Today I switched the cable from vertical to horizontal CC1
This one is reading higher pressure. It is an old dirty gauge. It may trigger the RGA protection when it's reading goes above 1e-5 torr
The real pressure is 2e-6 torr |
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