Experimental Physics and
Industrial Control System

Bernhard Kuner <[email protected]> · Mon, 04 Apr 2005 11:34:02 +0200

Hello All,
here at Bessy we use a ai record to read the 0..10V vacuum pressure
signal and convert it to the logarythmic value of the vacuum pressure.
This is usefull to show bargraphs of the vacuum and most people are just
interested in vacuum good or bad . A following calc-record converts it
to EGUs for numeric display. The logarythmic value is also the archived
one because once (long ago, can't remember the details) we had run into
the problem that an archive client tried to represent the vacuum of 1.23
* 10^-8 with a float number. This was the true but undesired value of
0.00000 :-)
Bernhard Kuner

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System