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Instruction Manual
Convection gauge analog output for selected gases
7.3.3
If you intend to use one or two of the convection gauge analog outputs for gases other than N
also apply corrections to the analog output. Use the following tables to determine pressure from voltage for
gases other than nitrogen or air.
7.3.3.1
Log-Linear CG analog output correction factors
When using the Log-Linear convection gauge analog output mode (Log-Linear 1 - 8 V, 1 V/decade) for gases
other than N
/, use the following look-up table and information to convert the analog output to pressure. The
2
look-up table has been derived from the equation provided in
True
Pressure
(Torr)
N
Ar
2
1.00E-4
1.000
1.000
2.00E-4
1.301
1.301
5.00E-4
1.699
1.699
1.00E-3
2.000
1.845
2.00E-3
2.301
2.146
5.00E-3
2.699
2.519
1.00E-2
3.000
2.820
2.00E-2
3.301
3.117
5.00E-2
3.699
3.511
1.00E-1
4.000
3.808
2.00E-1
4.301
4.100
5.00E-1
4.699
4.494
1.00E+0
5.000
4.778
2.00E+0
5.301
5.057
5.00E+0
5.699
5.389
1.00E+1
6.000
5.602
2.00E+1
6.301
5.763
5.00E+1
6.699
5.895
1.00E+2
7.000
5.946
2.00E+2
7.301
5.991
3.00E+2
7.477
6.053
4.00E+2
7.602
6.130
5.00E+2
7.699
6.207
6.00E+2
7.778
6.274
7.00E+2
7.845
6.338
7.60E+2
7.881
6.375
8.00E+2
7.903
6.400
9.00E+2
7.954
6.455
1.00E+3
8.000
6.512
InstruTech
Analog Output for Log-Linear CG 1-8 V
He
O
CO
2
2
1.000
1.000
1.000
1.301
1.301
1.301
1.699
1.699
1.699
1.903
2.000
2.041
2.204
2.301
2.362
2.602
2.699
2.643
2.908
2.987
3.041
3.207
3.297
3.346
3.607
3.692
3.740
3.914
3.988
4.029
4.217
4.288
4.322
4.638
4.687
4.689
4.973
4.987
4.978
5.346
5.288
5.233
6.130
5.697
5.524
6.013
5.696
6.348
5.819
6.890
5.915
7.320
5.966
7.470
6.090
7.580
6.228
7.686
6.350
7.781
6.458
7.863
6.561
7.934
6.664
7.974
6.732
7.999
6.774
6.900
7.045
Values listed under each gas type are in volts (Vdc).
section
6.3.
KR
Freon12
Freon22
1.000
1.000
1.000
1.301
1.301
1.301
1.477
1.699
1.699
1.602
2.176
2.176
2.000
2.491
2.491
2.362
2.881
2.845
2.681
3.167
3.130
2.978
3.476
3.435
3.371
3.860
3.839
3.670
4.155
4.134
3.960
4.439
4.418
4.336
4.786
4.774
4.602
5.021
5.017
4.845
5.210
5.220
5.107
5.389
5.418
5.250
5.471
5.530
5.360
5.521
5.571
5.410
5.579
5.617
5.438
5.670
5.691
5.521
5.777
5.808
5.555
5.838
5.876
5.595
5.883
5.925
5.624
5.918
5.964
5.647
5.947
5.998
5.667
5.974
6.029
5.677
5.989
6.045
5.685
5.998
6.057
5.698
6.021
6.079
5.706
6.045
6.104
IGM402 Hornet
/ Air, you must
2
D
Ne
CH
2
4
1.000
1.000
1.000
1.301
1.301
1.301
1.699
1.699
1.699
2.114
1.845
2.230
2.380
2.176
2.519
2.778
2.544
2.886
3.083
2.851
3.185
3.386
3.149
3.483
3.778
3.542
3.888
4.083
3.845
4.201
4.398
4.149
4.498
4.837
4.555
4.893
5.190
4.872
5.204
5.616
5.201
5.522
7.391
5.719
5.877
6.332
6.446
7.766
7.550
7.925
Page 55
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