Prosoft MVI46-AFC 氣體和液體流量計算機模塊

MVI46-AFC流量計算機模塊執(zhí)行碳氫化合物測量使用當前公認的行業(yè)測量標準的氣體和液體。該模塊由羅克韋爾自動化機箱的單插槽解決方案組成。為了獲得用于計算的過程輸入，模塊使用過程數(shù)據(jù)由模擬和脈沖I/O模塊采集。處理器將此數(shù)據(jù)傳輸?shù)?/strong>AFC模塊，然后計算流量、累計體積和累積質(zhì)量。計算的結(jié)果將傳回數(shù)據(jù)庫用于應用程序梯形邏輯或傳輸至SCADA主機的處理器。

模塊有兩個用于Modbus通信的通信端口輕松訪問遠程Modbus設備。該模塊作為Modbus從機工作或主設備。
內(nèi)部Modbus數(shù)據(jù)庫可以由Modbus主設備和處理器訪問（使用Modbus網(wǎng)關功能）。AFC管理器軟件可用于方便的儀表配置和維護應用程序監(jiān)視。

以下部分提供了一個示例應用程序，其中輸入數(shù)據(jù)從變送器傳輸?shù)絉ockwell上的模擬輸入卡自動化機架和值從處理器傳輸?shù)侥K（模塊支持浮點、縮放整數(shù)或4至20 mA格式）。對于脈沖計應用，脈沖計數(shù)和脈沖頻率值為
通常通過機架中的高速計數(shù)器模塊傳輸。模塊根據(jù)傳輸?shù)闹祱?zhí)行流量計算通過背板。計算結(jié)果可以讀取到處理器或從連接到其中一個通信設備的遠程Modbus主設備輪詢港口。
下圖顯示了孔板流量計的應用示例天然氣產(chǎn)品：為了符合新的測量標準，AFC版本2.05已介紹了幾種新的液體產(chǎn)品組。特別是，這兩個非精煉版本2.04的液體產(chǎn)品組，涵蓋了原油和液化天然氣分別被分為兩個獨立的產(chǎn)品組，一個適用于較高密度范圍的原油，另一種適用于較低密度范圍的原油NGLs。如果您的模塊配置了“原油、天然氣或液化天然氣”的流量計通道“油水乳化液”，您應該在升級固件之前決定新產(chǎn)品組（輕型或重型），每個此類渠道應分配。此任務將在升級過程中執(zhí)行，并將保存所有其他配置和歷史記錄，包括累加器值和存檔，而不是在升級后更改產(chǎn)品組重置儀表配置并刪除所有歷史記錄。米為“氣體”或“精制產(chǎn)品”配置的通道不受影響。AFC經(jīng)理在項目之間轉(zhuǎn)換時表現(xiàn)出相同的行為版本2.04（或更早版本）和2.05（或更高版本）

The mvi46-afc flow computer module perbs hydrocarbon measurements using currently recognized industry measurement standards for gases and liquids. The module consists of a single slot solution of Rockwell Automation chassis. In order to obtain the process b for calculation, the module uses the process data collected by the analog and pulse I / O module. The processor transmits this data to the AFC module, and then calculates the flow, cumulative volume and cumulative mass. The results of the calculation will be sent back to the database for application ladder logic or to the processor of the SCADA host.

The module has two communication ports for Modbus communication to easily access remote MODBUS devices. The module works as a MODBUS slave or master.The internal MODBUS database can be accessed by the Modbus master and processor (using the Modbus gateway function). The AFC manager software can be used for convenient instrument configuration and maintenance application monitoring.

The following section provides a sample application in which b data is transferred from the transmitter to the analog b card on Rockwell. The automation rack and values are transferred from the processor to the module (the module supports floating point, scaled integer, or 4 to 20 mA bat). For pulse meter applications, the pulse count and pulse frequency values are

It is usually transmitted through the high-speed counter module in the rack. The module perbs flow calculation through the backplane according to the transmitted value. The calculation results can be read to the processor or polled from a remote MODBUS master connected to one of the communication devices.

The following figure shows the application example of orifice flowmeter natural gas products: in order to meet the new measurement standards, AFC version 2.05 has introduced several new liquid product groups. In particular, the two non refined version 2.04 liquid product groups cover crude oil and liquefied natural gas. They are divided into two independent product groups, one for crude oil in the higher density range and the other for crude oil NGLS in the lower density range. If your module is configured with the flowmeter channel "oil-water emulsion" of "crude oil, natural gas or liquefied natural gas", You should decide on a new product group (light or heavy) before upgrading the firmware, and each such channel should be assigned. This task will be perbed during the upgrade process and will save all other configurations and history, including accumulator values and archives, rather than changing the product group after the upgrade, resetting the instrument configuration and deleting all history. The meter is "gas" or "refined product" Configured channels are not affected. AFC managers show the same behavior when switching between projects, versions 2.04 (or earlier) and 2.05 (or later)