Flow Measurement
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Do ProSoft AFC Flow Computers support annubar-type flow sensors?
No, the annubar is a different kind of differential pressure sensor; It is essentially a multiple pitot tube, which requires a different kind of calculation than an orifice plate....
Lire la suiteDownloading a new .AFC project file to an AFC flow computer module.
You cannot download a new .AFC file while any of the meter runs are enabled, or illegal data values will be reported by AFC manager.First you must disable all meter runs. This can be done either using the AFC manager, or the easier way is through the ladder logic. Once the meter ...
Lire la suiteDo ProSoft AFC flow computer solutions support energy calculations according to the ISO-6976 standards?
ProSoft AFC flow computer modules implement the Bernoulli equation for measurement of fluid flow through concentric square-edged orifices. The Coefficient of Discharge in this equation is calculated by an appropriate Standard, which may, by option selection, be chosen as either A...
Lire la suiteHow do I configure a vortex, ultrasonic or coriolis type meter in my AFC module?
For Vortex, Ultrasonic or Coriolis meters, the selection depends on the output generated bythe meter. If the meter provides a pulse train representing the volume increment, the AFC meter should beconfigured as Linear with Primary Input selected as Pulse Count. If t...
Lire la suiteIs it possible to configure an AFC flow computer solutions to use the ISO 6976 computation standard?
The short answer is, "No, it cannot." The reason it cannot is this:ISO 6976 is the ISO standard for calculating compressibilities and energy content of natural gases. It is similar to the older (pre-1992) edition of AGA 8 (compressibilities) and the current ...
Lire la suiteFor what purposes would I use the Multiple Meter Streams options on my MVIxx-AFC Flow Computer?
The Multiple Meter Streams options can be used to more efficiently compute flows through a single meter at a physical site that has different fluids flowing through the meter at different times. Since each Stream will have it's own meter configurati...
Lire la suiteHow do I include or calculate a natural gas specific gravity value?
If there is no analysis available, the user must supply in the meter configuration a suitable default relative density (= specific gravity), the density of the gas relative to air at the reference conditions.</?xml:namespace>If there is an analysis available (such...
Lire la suiteWhere are the on-board jumper positions defined for my MVI module?
On bottom of the circuit board for any MVI products, you' ll find three jumper banks: COM1, COM2, and Setup.Each jumper position is labeled 232, 422 and 485....
Lire la suiteDo ProSoft AFC Flow Computer solutions support "ASME MFc-6M", "API-11" and/or "API-12" calculation standards for measuring lubricating oils?
The API-11 and API-12 calculations are available in ProSoft AFC Flow Computers, beginning with version 2.05. MPMS Ch 12 specifies, essentially, the necessary factors and calculational sequence for measuring liquids, and the general method of measurement using ...
Lire la suiteWhat AGA specification version is used for Flow Calculations in the ProSoft MVIxx-AFC modules?
The AGA Specifications include Part 1 "General Equations and Uncertainty Guidelines", dated 1990; Part 2 "Specification and Installation Requirements", dated 2000; Part 3 "Natural Gas Applications", dated 1992; and Part 4 "Background,...
Lire la suiteWhen converting from a 2100-AGA to an AFC flow module, why are there different flow values between the 2 modules?
The attached document describes the differences in the calculations when using AGA 3....
Lire la suiteUsing AFC modules with corrected (net) flow as in input
The AFC is not designed to receive a corrected flow input.However if the AFC is being used only for its accumulation and archive capabilities, then rather than the process temperature and pressure inputs, provide the meter's reference conditions as the AFC's temperature and press...
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