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Hence the column header is not the true density at the measurement temperature. That means that the column header is the actual value read off the hydrometer the correction is in the base density values and not in the observed density.
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The tables have a built in correction for hydrometer readings at temperatures other than the calibration temperature.
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This is the interpretation we now arrive at: By following the table down until the measurement temperature is found, the base density is then read from the appropriate column. My correspondent on this problem has found a possible solution so any comments on this would be appreciated. I am now scouring the standard for any indication of what an acceptable deviation between tables and calculation is. Note that an inline density meter for fiscal duty will measure to 0. These are not small errors, not by my reckoning anyway, and always lower than the table values. Right, not much difference until you get to psi or so. The problem here is agreement between the temperature only calculation and the tables but it is certainly worth me double checking, the obvious being missed is common glitch. So I try to find out where the problem is and maybe try to fix it.īy the way, the freeware is Bcalc from Shell, it is a bunker fuel blending program. The values I got however out of my routine were identical to yours. So I looked further and I came across one piece of freeware and one shareware that can 53h the calculation and produce the exact values of table 53B. I have been queried as to why my calculation results disagree with the 53b tables: So i looked around the internet and the 1st application I found was yours. I publish a density calculation spreadsheet see link below. I have had the following problem raised that someone may be able to help with. Promoting, selling, recruiting, coursework and thesis posting is forbidden. Click Here to join Eng-Tips and talk with other members!Ĭlose this window and log in. The Eng-Tips staff will check this out and take appropriate asttm.
#ASTM TABLE 54B DOWNLOAD FREE#
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