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Idiomas disponibles
MANOMETER U
Description
Crystal manometer with U form and a key of step on the top of one way.
It has a support. The scale is 50-0-50 with 1mm divisions.
Detail of the key of step
Theory
Manometer is an instrument useful to measure the pressure in fluids, it is
often used to measure the difference between two pressures taking as
reference the local pressure.
Pressure is defined as the press per unit of area that makes a liquid or gas
on a surface. Pressure can be measured as atmosphere (atm), newton per
metre, pascal (Pa).
Manual de instrucciones- Instruction manual
1 atm= 101.325 Pa = 760 mm Hg.
We have to consider that the majority of manometer measure the
difference between a liquid and the atmospheric pressure, thus we have to
add the result to the atmospheric pressure to achieve our result.
This is because the manometer has two columns, one is connected to our
gas that we want to measure the pressure and the other is opened. In both
cases there is a calibration to help us in the process.
In the figure, P1 is the pressure that a gas makes over the water because
this one is connected, the other column is P1 this is the atmospheric
pressure, the difference Ah between the two columns is that we have to
add to the atmospheric pressure to measure the pressure of the left
column.
The unit of this manometer is the meter of water column. Meter of water
column is the unit of pressure equal to the pressure that is exerted by a
column of water on earth gravity. It symbol is mca and is a multiple of
mmca.
1mca=100cmca=1000mmca
1mca=9896,65 Pa
1 atm= 10,33 mca
QLB007
Versión-Version 1/2017
4
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