Mechanical laboratory methods; the testing of instruments and machines in the mechanical engineering laboratory and in practice (1922)
Smallwood, Julian Chase · New York, D. Van Nostrand company · leaf 72
cending scales should be used separately on the diagram,the former applied to the mean height of cde, Fig. 32, since thepencil is rising on that line; and the latter to the mean height ofabc since there the pressure falls. But when the back pressureline is horizontal in large part, as it almost… … Pressure Fig. 35. Fig. 36. Correction of Indicator Diagrams. It is then necessary to reconstruct the diagram to get correctresults. A method of doing this is as follows. Calibrationdata are obtained as previously described, and plotted as shownby Fig. 35. The range of pressure P for the calibration…
Mechanical engineering
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