Proline Promass 83E/F/O Description of Device Functions - FMC ...
Proline Promass 83E/F/O Description of Device Functions - FMC ...
Proline Promass 83E/F/O Description of Device Functions - FMC ...
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9 Block BASIC FUNCTION <strong>Device</strong> <strong>Functions</strong> <strong>Proline</strong> <strong>Promass</strong> 83<br />
Function description<br />
BASIC FUNCTION PROCESS PARAMETER REFERENCE PARAMETER<br />
VALUE REFERENCE<br />
TEMPERATURE<br />
(6464)<br />
! Note!<br />
This function is not available unless the CALCULATED REFERENCE DENSITY setting<br />
was selected in the CORRECTED VOLUME CALCULATION function (6460).<br />
Entering the reference temperature for calculating the corrected volume flow, the<br />
corrected volume and the reference density.<br />
User input:<br />
5-digit floating-point number<br />
Factory setting:<br />
20.000 °C<br />
The reference density is calculated as follows:<br />
N = · (1 + t + t 2 ) ; where t = t - t N<br />
N = Reference density<br />
currently measured fluid density (measuring value <strong>Promass</strong>)<br />
t = Actual measured temperature <strong>of</strong> fluid (measuring value <strong>Promass</strong>)<br />
t N = Reference temperature for calculating the reference<br />
density (e.g. 20 °C)<br />
= Volumetric expansion coefficient <strong>of</strong> the fluid,<br />
Unit = [1/K]; K = Kelvin<br />
= Square volumetric expansion coefficient <strong>of</strong> the fluid, unit = [1/K 2 ]<br />
Page 128 • MN0M023<br />
Issue/Rev. 0.2 (12/12)