Conversion Of Hydrogen-Vapor-Pressure Gauge Readings To Temperature - HELIX CTI-CRYOGENICS CRYO-TORR 100 Installation, Operation And Servicing Instructions

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en-CRYOGENICS
HELIX TECHNOLOGY CORPORATION
Appendix D
Conversion of
Hydrogen-Vapor-Pressure Gauge
Readings to Temperature
Use the data given below
to
convert a reading of the
optional hydrogen-vapor-pressure gauge (in psia)
to
the
temperature of the second-stage cold station (in degrees
Kelvin). The hydrogen-vapor-pressure gauge should not
be used to measure temperatures higher than 26K.
26
24
22
20
K 18
12
TEMPERATURE VS. HYDROGEN-VAPOR
PRESSURE
10L--L __
k - - L __
L - - L _ _ L - - L _ _
~~~i-~~~~L-~~L
o
4 8 12 16 20 24 28 32 36 40 44 48 52 56 60
PSIA
PSIA
K
PSIA
K
0
Less than
12 15
20.5
1 13.9 18 21.1
2 15.2
21
21.7
3
16.0 24 22.2
4
16.7 27 22.6
5 17.2 30 23.1
6 17.7 35 23.7
7
18.1 40 24.3
8 18.5
45
24.8
10
19.2 50 25.3
12 19.7 55 25.8
D-l/D-2