Introduction
The authenticity of atmospheric and vacuum pressure is evident since period of Galileo and hypotheses and experiments related to those subjects was considered in ancient times. This period of 17th century was crucial for the vacuum science as for many other scientific fields. Many researchers worked on the same theory including, Otto von Guericke, Robert Boyle and Blaise Pascal (Calcatelli 2013).
The rising demands on accuracy in result require constant calibration. According to Rucki, Barisic & Varga (2010) , metrological properties of the measuring tools, is significant. Sometimes it appears difficult to calibrate parameters of pressure gauge, because its gauging array depends upon the sensitivity. The higher is the level of sensitivity, the shorter is the measuring assortment, and vice versa. However, there are additional advantages of measurement as construction of gauge, economical maintenance. Inexpensive and self-cleaning of the gauged area with the out flowing air in open jet.
The functional principles could be based upon the pressure or velocity. The pressure observed in the gauge is back pressure. The most commonly utilized are the back-pressure described here. The working construction pressure gauge depends on shutoff of the flap of nozzle. The pressure in the determining chamber relies on the slot widths between the head of the gauging nozzle and the surface area of the gauge. Thus, the dimensions of measured specific can be suggested by the variants of the back-pressure (Rucki, Barisic, & Varga 2010).
In our experiment, we used the bourdon gauge by considering a dead weight calibrator, which comprises of a piston and cylinder connected to two pressure measuring devices, a Bourdon gauge and electronic pressure transducer. The pressure applied by the piston can be varied by adding different masses.
The report provides methodology and results mentioned in section 2 and 3 respectively followed by the discussion in section 4.Finally we take home the knowledge by concluding in section 5.
References
Rucki, M. , Barisic, B. & Varga, G. (2010). ‘Air gauges as a part of the dimensional inspection systems’, Measurement, Vol. 43,pp. 83-91.
Calcatelli, A. (2013). ‘The development of vacuum measurements down to extremely high vacuum – XHV’, Measurement, Vol. 46, pp.1029-1039.
