ROCTEST FOP, Инструкция по эксплуатации, Страница: 24 / 29

E10160-200722 FOP
Page 21
From these results, the pressure in psi can be calculated back using the equation
described in the previous section and the FOP gauge factor.

Calibration factor determination
psi nm . . : . F . G 192 5 10 192 5 6025192
2 2
    


Cavity length variation
17152.0
– 18190.5 = –1038.5 nm

Pressure calculation
psi .
psi nm .
nm .
0 200
192 5
5 1038



4.3 Determination of the Gauge Factor
Finally, it can be shown that the Gauge Factor can be determined from the Calibration
Factor by the following equations:
1
10
   
Y
. F . C ZZZZ
1
10000





















. F . C
LOG INTEGER Y
Where C.F. is the Calibration Factor given in nm/psi. The values in the above example
can be used to calculate Y = 2 and ZZZZ = 5192. Note that the Calibration Factor is
determined in factory using a precisely calibrated pressure system.