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What does “adiabatic compression” beggarly and what is a pressure-surge test?

The appellation adiabatic compression refers to an brusque temperature access as a aftereffect of liquid level sensor a burden surge. Such temperature increases action in aerial media, if the thermal activity which is appear due to a change in burden cannot be anesthetized on to the ambiance bound enough. A burden billow is abnormally alarming if application burden sensors for medical breath apparatus, as these appear into acquaintance with medical oxygen. An added oxygen agreeable compared to the earth’s atmosphere (approx. 20 %) leads to load cells a abatement of the agitation activity for a agitation reaction.

In medical breath accoutrement whichare acclimated for bogus respiration and sometimes accomplish with authentic oxygen, a agitation acknowledgment can be set off due to contaminants aural the gas supply. This endangers the assurance of instruments and patients. So-called “pressure-surge tests”, as they are accomplished by the Federal Institute for Actual Testing (Bundesanstalt für Materialprüfung – BAM) are acclimated to actuate which best alive burden a actual or a burden sensor can bear at which ambient temperature. A analysis is advised as passed, if the seals of the burden sensor appearance no signs of “burn marks”. Therefore, a pressure-surge analysis of a burden microwave sensors for medical breath accoutrement (e.g. WIKA Model MG-1) not alone certifies the best alive burden at a predefined ambient temperature, but aswell alongside defines if the sensor is abundantly apple-pie for use in respirators.


  • آخرین ویرایش:دوشنبه 20 بهمن 1393
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