78
Doc. Ref. XGC-320-100119
V100 (2019-11)
Coefficients for voltage segment range of 7.9102 to 9 volts
K
0
K
0
= -2.05
K
1
K
1
= +1.02
K
2
K
2
= -5.106048E-02
K
3
K
3
= +4.554342E-06
Example: Measured analog output voltage is: V
1
= 5.6243 V.
Since analog output in this example is 5.6243 V, use the
Coefficients from the fourth table shown in the previous page:
K
0
= -3.01, K
1
= +5.495931E-02,
K
2
= -2.652588E-05, K
3
= +4.526774E-09
Use equation from the previous page;
P = K
0
+ K
1
(454.67*V
1
)+ K
2
(454.67*V
1
)
2
+ K
3
(454.67*V
1
)
3
P = Pressure = 5.00 Torr
The following pressure vs. voltage table is derived from
equations and coefficients listed above.