D U N I W A Y S T O C K R O O M C O R P .
W W W . D U N I W A Y . C O M
19 of 28
O. Other Gases
If you need to measure the pressure of gases other than air or nitrogen, refer to the following table:
(This data is for the AIR setting of the 906A)
Figure 9: Indicated pressure on Model 906A display, torr
True
Pressure
Indicated Pressure
torr
Argon
CO2
Deuterium Freon 12 Freon 22 Helium Krypton Methane Neon
Oxygen
0
0
0
0
0
0
0
0
0
0
0
0.0001
0.0001
0.0001
0.0001
0.0001
0.0001
0.0000
0.0000
0.0002
0.0001
0.0001
0.0002
0.0001
0.0002
0.0002
0.0003
0.0002
0.0002
0.0002
0.0003
0.0001
0.0002
0.0005
0.0003
0.0006
0.0006
0.0008
0.0007
0.0004
0.0003
0.0008
0.0003
0.0005
0.001
0.0007
0.0011
0.0019
0.0015
0.0014
0.0008
0.0005
0.0018
0.0007
0.0010
0.002
0.0013
0.0023
0.0024
0.0030
0.0029
0.0016
0.0010
0.0032
0.0014
0.0020
0.005
0.0033
0.0055
0.0060
0.0075
0.0068
0.0040
0.0023
0.0077
0.0035
0.0049
0.01
0.0065
0.0109
0.0120
0.0147
0.0135
0.0080
0.0046
0.0152
0.0070
0.0097
0.02
0.014
0.022
0.024
0.030
0.027
0.016
0.009
0.031
0.014
0.020
0.05
0.033
0.055
0.060
0.073
0.069
0.041
0.024
0.077
0.035
0.049
0.1
0.064
0.107
0.120
0.142
0.136
0.082
0.046
0.158
0.070
0.097
0.2
0.126
0.208
0.247
0.270
0.259
0.163
0.085
0.310
0.140
0.192
0.5
0.307
0.494
0.673
0.599
0.582
0.427
0.214
0.764
0.353
0.477
1
0.59
0.93
1.51
1.03
1.01
0.92
0.39
1.56
0.73
0.95
2
1.12
1.67
4.02
1.59
1.62
2.16
0.68
3.23
1.60
1.90
5
2.36
3.24
261
2.38
2.54
13.2
1.25
13.3
5.10
4.85
10
3.86
4.84
2.86
3.29
1.74
28.6
21.5
10.1
20
5.67
6.39
3.21
3.61
2.23
359
584
22.4
50
7.72
8.00
3.68
4.02
2.50
845
85.7
100
8.71
9.02
4.56
4.78
2.66
226
200
9.65
12.0
5.81
6.23
3.07
303
300
11.1
16.8
6.69
7.31
3.49
383
500
15.9
29.4
8.06
8.98
4.10
603
700
21.9
48.8
9.20
10.4
4.60
861
760
23.9
56.0
9.52
10.8
4.63
943
900
29.2
88.2
10.2
11.7
1000
33.8
129
10.8
12.4
For example, if you are measuring the pressure in a system that is backfilled with argon, and the
Model 906A display shows an indicated pressure of 23.9 torr, the true pressure is 760 torr. If the
indicated pressure is 14 mtorr (0.014 torr), the true pressure is 20 mtorr (0.02 torr).
These data were compiled from a variety of sources, and are believed to be reliable, however Ter-
ranova Scientific, Inc.takes no responsibility for errors in the data. If your application is critical,
we suggest you use the services of an independent laboratory to calibrate the gauge and Model
906A controller to your specific application.
TELEPHONE: 650-969-8811 TOLL-FREE (U.S. only): 800-446-8811 FAX: 650-965-0764 EMAIL: [email protected]
www.duniway.com
