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Deadweight tester
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<h2 id="formula">Formula</h2> <p>The formula on which the design of a DWT is based basically is expressed as follows : </p> <table><tbody><tr><td><i>p</i></td><td>=</td><td><i>F</i> / <i>A</i></td><td>[Pa]</td></tr></tbody></table> <p>where : </p> <table><tbody><tr><td><i>p</i></td><td>:</td><td>reference pressure</td><td>[Pa]</td></tr><tr><td><i>F</i></td><td>:</td><td>force applied on piston</td><td>[N]</td></tr><tr><td><i>A</i></td><td>:</td><td>effective area PCU</td><td>[m2]</td></tr></tbody></table> <p><a class="footnote-ref" id="fnref:1" href="#fn:1"><sup>1</sup></a> </p> <h2 id="piston-cylinder-design">Piston cylinder design</h2> <p>In general there are three different kind of DWT's divided by the medium which is measured and the lubricant which is used for its measuring element : </p> <ol><li>gas operated gas lubricated PCU's</li> <li>gas operated oil lubricated PCU's</li> <li>oil operated oil lubricated PCU's</li></ol> <h2 id="see-also">See also</h2> Wikimedia Commons has media related to Deadweight testers. <ul><li><a href="/facts/Blaise_Pascal/Huy5LenL">Blaise Pascal</a> <ul><li><a href="/facts/Pascal_(unit)/Am1To2Qm">Pascal (unit)</a></li></ul></li> <li><a href="/facts/Calibration/xkqmdeVl">Calibration</a></li> <li><a href="/facts/Force_gauge/yLotN5zR">Force gauge</a></li> <li><a href="/facts/Piezometer/H3Hz3UHe">Piezometer</a></li> <li><a href="/facts/Pressure_measurement/fJrvoTDU">Pressure measurement</a></li> <li><a href="/facts/Pressure_sensor/ccQINerP">Pressure sensor</a></li> <li><a href="/facts/Vacuum_engineering/eBFM3oWa">Vacuum engineering</a></li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>Fluke Corporation. "Pressurements PressCal Deadweight Tester Software" (PDF). Retrieved 21 November 2019. <a href="https://dam-assets.fluke.com/s3fs-public/PressCalumeng0000.pdf" target="_blank">https://dam-assets.fluke.com/s3fs-public/PressCalumeng0000.pdf</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> </ol>