Ig + Cg1 Analog Output Correction Factors - Convection Gauge Range - Instrutech The Hornet IGM402 User Manual

Instruction Manual
7.3.2.2

IG + CG1 analog output correction factors - Convection gauge range

When using the IG + CG1 analog output mode (Log-Linear 0.5 - 7 V, 0.5 V/decade) for gases other than N
use the following look-up table and information to convert the analog output to pressure when operating in the
convection gauge pressure measurement range. The look-up table has been derived from equation listed in
section 6.2.
Analog output IG + CG1 mode when in the pressure range of overpressure shutdown value to 1,000 Torr
True
Pressure
(Torr) N Ar
2
1.00E-3 4.000 3.923
2.00E-3 4.151 4.073
5.00E-3 4.349 4.259
1.00E-2 4.500 4.410
2.00E-2 4.651 4.559
5.00E-2 4.849 4.755
1.00E-1 5.000 4.904
2.00E-1 5.151 5.050
5.00E-1 5.349 5.247
1.00E+0 5.500 5.389
2.00E+0 5.651 5.528
5.00E+0 5.849 5.695
1.00E+1 6.000 5.801
2.00E+1 6.151 5.882
5.00E+1 6.349 5.947
1.00E+2 6.500 5.973
2.00E+2 6.651 5.995
3.00E+2 6.739 6.027
4.00E+2 6.801 6.065
5.00E+2 6.849 6.103
6.00E+2 6.889 6.137
7.00E+2 6.923 6.169
7.60E+2 6.940 6.187
8.00E+2 6.952 6.200
9.00E+2 6.977 6.227
1.00E+3 7.000 6.256
Example:
The gas in use is O . Voltage output is 5.144 volts.
2
True pressure of O is 2.0E-01 Torr
2
InstruTech
He O CO
2 2
3.952 4.000 4.021 3.801
4.102 4.151 4.181 4.000
4.301 4.349 4.322 4.181
4.454 4.493 4.521 4.341
4.603 4.648 4.673 4.489
4.804 4.846 4.870 4.686
4.957 4.994 5.015 4.835
5.109 5.144 5.161 4.980
5.319 5.343 5.345 5.168
5.487 5.493 5.489 5.301
5.673 5.644 5.616 5.423
6.065 5.849 5.762 5.554
6.006 5.848 5.625
6.174 5.909 5.680
6.445 5.957 5.705
6.660 5.983 5.719
6.735 6.045 5.761
6.790 6.114 5.778
6.843 6.175 5.798
6.891 6.229 5.812
6.932 6.281 5.824
6.967 6.332 5.834
6.987 6.366 5.838
6.999 6.387 5.842
6.450 5.849
6.523 5.853
Values listed under each gas type are in volts (Vdc).
KR Freon12 Freon22
4.088 4.088
4.246 4.246
4.440 4.423
4.584 4.565
4.738 4.717
4.930 4.919
5.078 5.067
5.220 5.209
5.393 5.387
5.511 5.509
5.605 5.610
5.695 5.709
5.736 5.765
5.761 5.785
5.789 5.809
5.835 5.846
5.889 5.904
5.919 5.938
5.941 5.963
5.959 5.982
5.974 5.999
5.987 6.015
5.995 6.023
5.999 6.028
6.011 6.040
6.023 6.052
IGM402 Hornet
D Ne CH
2 4
4.057 3.923 4.115
4.190 4.088 4.259
4.389 4.272 4.443
4.541 4.426 4.592
4.693 4.575 4.741
4.889 4.771 4.944
5.041 4.923 5.101
5.199 5.075 5.249
5.418 5.278 5.446
5.595 5.436 5.602
5.808 5.601 5.761
6.695 5.860 5.938
6.166 6.223
6.883 6.775
6.963
/ Air,
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