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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<strong>Device</strong> <strong>Functions</strong> <strong>Proline</strong> <strong>Promass</strong> 83<br />
9 Block BASIC FUNCTION<br />
Function description<br />
BASIC FUNCTION PROCESS PARAMETER ADJUSTMENT<br />
DENSITY ADJUST<br />
(6487)<br />
With this function a density adjustment can be carried out on site.<br />
The density adjustment values will thus be recalculated and stored. This ensures that the<br />
values dependent on density calculations (e.g. volume flow) are as accurate as possible.<br />
! Note!<br />
Before carrying this out, please refer to the Operating Instructions <strong>Proline</strong> <strong>Promass</strong> 83,<br />
BA 059D/06/en for a detailed description <strong>of</strong> the procedure for density adjustment.<br />
Two types <strong>of</strong> adjustment are possible:<br />
1-point density adjustment (with one fluid)<br />
This type <strong>of</strong> density adjustment is necessary under the following conditions:<br />
• The sensor does not accurately measure the density which the operator expects based<br />
on laboratory trials.<br />
• The characteristics <strong>of</strong> the fluid are outside the measuring points set at the factory or<br />
reference conditions under which the flowmeter has been calibrated.<br />
• The plant is used solely for measuring a fluid whose density is to be determined very<br />
accurately under constant conditions.<br />
2-point density adjustment (with two fluids)<br />
This type <strong>of</strong> adjustment must always be carried out when the measuring tubes are<br />
changed mechanically, e.g. due to:<br />
• Deposits<br />
• Abrasion<br />
• Corrosion<br />
In such instances, the measuring tube resonance frequency is influenced in such a way<br />
that it is no longer compatible with the calibration data determined at the factory.<br />
The 2-point density adjustment takes these mechanically-based changes into account and<br />
calculates new, adjusted calibration data.<br />
Options:<br />
CANCEL<br />
MEASURE FLUID 1<br />
MEASURE FLUID 2<br />
DENSITY ADJUSTMENT<br />
Factory setting:<br />
CANCEL<br />
RESTORE ORIGINAL<br />
(6488)<br />
With this function the original density coefficient determined at the factory are restored.<br />
Options:<br />
NO<br />
YES<br />
Factory setting:<br />
NO<br />
Issue/Rev. 0.2 (12/12) MN0M023 • Page 131