High pressure is always dangerous. Only personnel with good experience and
knowledge of high pressure liquid, air and nitrogen operations are allowed to work with
the module. Read carefully all these instructions and familiarize yourself with local safe-
ty instructions for high pressure operations before starting the use.
When using gas, the system must not contain any liquid, especially if you do not know
how they may react under pressure. Use of clean air or nitrogen is recommended as
gaseous pressure media. Liquid pressure media should be preferred when using mod-
ules with a pressure range of 60 bar (30000 psi) or more.
If you use nitrogen, minimize the leak to the atmosphere and take care of sufficient ven-
tilation. Close the valve of the nitrogen cylinder, when the system is not in use. Increase
in the percentage of nitrogen in the ambient air may cause unconsciousness and death
without warning. Read carefully the safety instructions for nitrogen and make sure that
the other people in the same space are aware of the danger.
Use of liquid pressure medium is recommended with pressure measurement modules
at higher pressure range. Use water or suitable hydraulic oil. Check that the used liquid
is not aggressive against the materials used in the transducer or tubing. When using
liquid, minimize the amount of air in the system. So you can minimize the amount of
spilled liquid in case of leakage.
Do not use the same tubing with different liquids or gases.
Check what the local regulations say about construction
and use of pressurized vessels. The regulations normally
control construction and use of systems where the prod-
uct of the pressure and volume exceeds a certain limit.
The volume of this system depends on the instrument
connected to it.
High pressure gas is dangerous because it can break the
container and the flying splinters may cause injury. Also
small leaks of gas may be dangerous because the high
velocity of the leaking gas jet enables penetration through
skin. If a gas bubble gets into the blood circulation, it can
cause death. The leak jet is particularly penetrative, if
some liquid is coming with the gas.
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