Useful notes
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True pressure in heights over sea level at an atmospheric
pressure related to sea level as published by meteorological
services
Height over sea
level (meter)
Atmospheric
pressure (kPa)
Max. measuring
range at 20°C (kPa)
0 101.3 -99.0
500 95.5 -93.2
1000 89.9 - 87.6
1500 84.6 - 82.3
2000 79.5 -77.2
2500 74.5 -72.2
3000 70.1 -67.8
6.1.3 Boiling retardation:
Wate
r needs a nucleation site to boil. As our Tensiometers have
polished surfaces and a gas-free filling the so called boiling
retardation occurs – the Tensiometer keeps on measuring beyond
the boiling point. To achieve this the T5(x) must have an absolutely
bubble free filling.
Some T5x can go down to -250 kPa before they run dry, occasionally
even a range of -450 kPa is achievable. As this is exceptional there
is no guarantee for this measuring range.
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