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V100 (2019-11)
Doc. Ref. XGC-320-100119
47
NONLIN 9V; Non-Linear Analog Output, S-Curve
The NONLIN 9V setting selected from the ANALOG TYPE menu
produces a non-linear analog output signal of 0 to 9 V (dc) for 0
to 1000 Torr of N
2
, roughly in the shape of an "S" curve, as
shown below.
Selecting the NONLIN 9V setting from the Ideal Vacuum
Products XGC-320 ANALOG TYPE menu duplicates the analog
outputs (S-Curve) of the Granville-Phillips Convectron® gauge
controller series 375, 475 and the original 1/4 DN 275 Analog
Convectron Gauge Controllers.
The equations and table shown in section 7.8 contain the lookup
data for converting the NONLIN 9V output voltage into pressure
values for nitrogen and various other gases.