Prosoft MVI46-AFC 氣體和液體流量計(jì)算機(jī)模塊

MVI46-AFC流量計(jì)算機(jī)模塊執(zhí)行碳?xì)浠衔餃y(cè)量使用當(dāng)前公認(rèn)的行業(yè)測(cè)量標(biāo)準(zhǔn)的氣體和液體。該模塊由羅克韋爾自動(dòng)化機(jī)箱的單插槽解決方案組成。為了獲得用于計(jì)算的過(guò)程輸入，模塊使用過(guò)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(jì)算流量、累計(jì)體積和累積質(zhì)量。計(jì)算的結(jié)果將傳回?cái)?shù)據(jù)庫(kù)用于應(yīng)用程序梯形邏輯或傳輸至SCADA主機(jī)的處理器。

模塊有兩個(gè)用于Modbus通信的通信端口輕松訪(fǎng)問(wèn)遠(yuǎn)程Modbus設(shè)備。該模塊作為Modbus從機(jī)工作或主設(shè)備。
內(nèi)部Modbus數(shù)據(jù)庫(kù)可以由Modbus主設(shè)備和處理器訪(fǎng)問(wèn)（使用Modbus網(wǎng)關(guān)功能）。AFC管理器軟件可用于方便的儀表配置和維護(hù)應(yīng)用程序監(jiān)視。

以下部分提供了一個(gè)示例應(yīng)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(dòng)化機(jī)架和值從處理器傳輸?shù)侥K（模塊支持浮點(diǎn)、縮放整數(shù)或4至20 mA格式）。對(duì)于脈沖計(jì)應(yīng)用，脈沖計(jì)數(shù)和脈沖頻率值為
通常通過(guò)機(jī)架中的高速計(jì)數(shù)器模塊傳輸。模塊根據(jù)傳輸?shù)闹祱?zhí)行流量計(jì)算通過(guò)背板。計(jì)算結(jié)果可以讀取到處理器或從連接到其中一個(gè)通信設(shè)備的遠(yuǎn)程Modbus主設(shè)備輪詢(xún)港口。
下圖顯示了孔板流量計(jì)的應(yīng)用示例天然氣產(chǎn)品：為了符合新的測(cè)量標(biāo)準(zhǔn)，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(gè)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(gè)獨(dú)立的產(chǎn)品組，一個(gè)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(jì)通道“油水乳化液”，您應(yīng)該在升級(jí)固件之前決定新產(chǎn)品組（輕型或重型），每個(gè)此類(lèi)渠道應(yīng)分配。此任務(wù)將在升級(jí)過(guò)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(jí)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(xiàng)目之間轉(zhuǎn)換時(shí)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)