937A Multi-Sensor System
C.1
Appendix C: 937A Sensor
Output vs. Pressure Curves
Output V
o
lta
g
e
(V
olts)
Pressure (Torr)
Buffered Analog Output Cold Cathode
(Series 421 and 423)
When using the graphs, remember that the pressure scale is
always logarithmic, and the voltage scale is linear for all sensors
except the capacitance manometer. Equal increments of distance
along a logarithmic scale does not correspond to equal pressure
or voltage changes.
10
-11
10
-10
10
-9
10
-8
10
-7
10
-6
10
-5
10
-4
10
-3
10
-2
10
9
8
7
6
5
4
3
2
1
0
