ProSoft Technology PTQ-AFC - Manual (Page 95)

PTQ-AFC ♦ Modicon Quantum Platform Quick Start
Liquid and Gas Flow Computer for Hydrocarbon Products User Manual
ProSoft Technology, Inc. Page 95 of 259
June 23, 2011
6.10.3 Net Accumulator Calculation
The Net Accumulator Calculation depends on the product group (gas or liquid).
For gas applications, the Net Accumulator is calculated as follows:
For liquid applications (all except Emulsion), the Net Accumulator is calculated as
follows:
For liquid applications (Oil-Water Emulsion), the net accumulator is calculated as
follows, using API ch 20.1:
6.10.4 Frequently Asked Questions
I need the accumulators to be reset upon period end. Which accumulator
should my application use? Resettable Accumulator or Archive
Accumulator?
You can use either one. The Archive Accumulators are reset every time a new
archive is created and you configure whether the archive should be created upon
period end and/or upon events.
There are some applications that may require the archives to be generated upon
period end and upon event while the accumulators should be reset only upon
period end. For these applications, you should consider the Resettable
Accumulator (configured to be reset upon period end only) because the Archive
Accumulators will also be reset when an event occurs.