Kurt J. Lesker 100014434, Operation And Maintenance Manual

Page: 30 / 38

30 Series 902 Piezo
Logarithmic 5
The following graph shows the correlation of logarithmic analog output to
pressure on a 1 to 5 volt scale. This is the output the user will see if the
Analog Output Format – DAC value is LOG5 . To receive analog output for
LOG5, the converter must have a 5 volt scale. The logarithmic output is
P (Torr) = 10
(V-2)
.
902 Logarithmic Analog Output
(1 - 5 Volt Scale)
0
1
2
3
4
5
0.1 1.0 10.0 100.0 1000.0
Pressure (Torr)
Voltage