COSA Xentaur Hygrocontrol Type 86 Ex - Manual (Page 25)

Table 3: Display at 100% RH over Ice at different Temperatures
75,5 0,37 0,49 - 30
79,0 0,64 0,81 - 25
81,7 1,03 1,26 - 20
86,9 1,66 1,91 - 15
90,6 2,60 2,87 - 10
95,3 4,02 4,22 - 5
100 6,11 6,11 0
M (%RH) PSE (mbar) PSF (mbar) Temperatur (°C)
PSF = Saturated Vapor Pressure over Chilled Water
PSE = Saturated Vapor Pressure over Ice
M
= Rel. Humidity displayed by HYGROMESS Instruments.
4.7 Measurements under Pressure or Vaccuum
All probes can be used at pressures of 0,9 to 1,3 bar. Only special probes
with a glas feed-through (which predicts SS - 316 tube material) may be
used under pressures of 0,03 to 30 bar. As rel. Humidity is directly
proportional to the pressure (f.E.: increase of pressure by factor 2 also
increases rel. Humidity by factor 2, when temperature and content of water
remain constant!) you shoud take care of a place with constant pressure
values, when mounting the probe. Be aware that pressure may change,
when diameters of tubes change - and air streams may be turbulent at
these places.
HYGROCONTROL Manual for Type 86 Ex Page
24