PC technology is now widely accepted as the standard architecture for all process control and monitoring systems. The introduction of Integrator, brings this technology to the world of flow metering. Integrator, utilises a suite of object-based software functions configured to provide flow measurement calculations, processes and controls.
Each application is configured by ‘linking’ a series of pre-tested and approved function blocks. Typical function blocks are those handling ISO 5167 routine, measured density routine, calculated density routine, AGA 8 routine, transmitter inputs, ranging and alarms, etc. The configuration process allows the engineer to insert a function block into the application and by using the graphical ‘linking’ process, link the output of any function block to the input of another.
On completion of the configuration the engineer compiles the application ready for use. The compiled application is furnished with an OPC Server and an OPC Client. The OPC Client ‘collects’ the application I/O data from the appropriate OPC Server and ‘feeds’ this data into the calculation. The OPC Server is used to make the calculated data and alarms available to the MSC or other OPC Clients. This interface also allows the OPC Clients to write values to the Integrator.
The Application Builder is a graphical tool used to configure the flowcomputer applications. Each function block is tested as a single entity before being released for use in the system library. The engineer simply has to “drag and drop” function blocks from the library to insert these in the application. The function blocks are connected by “clicking and dragging” an output of any function block and “patching” this to the selected input of the target function block. The application can be compiled at any time throughout the development and tasks can be verified using the debugging facility, which permits the application to run with live or fixed value process data. In debugging mode all data transfer from block to block is displayed on the Application Builder screen.
Function Block Library
The Integrator function block library provides an extensive range of calculation and data handling functions, a selection of which are listed below;
AGA3, AGA5, ISO 5167
Density/Compressibility Calculations
AGA8, IAPWS-IF97 steam density, Costald, API2540, NX19, S-Gerg, Peng-Robinson, PTZ
Composition and Energy
ISO 6976, Mass fractions
Proprietary Calculations
Instromet QSonic,
Daniel SeniorSonic,
McCrometer V-Cone,
Sarasota Densitometer,
Solartron Densitometer
Averaging and Linearisation
12 Point calibration curve,
Flow-weighted Averaging,
Time-weighted Averaging,
Variable Averaging
Period Totals, Batch Totals,
Maintenance Totals,
Non-resettable Totals
Meter Proving
Pulse Interpolation,
Meter K Factor Calculations,
Meter Factor Calculations
I/O Data Handling
Analogue Input Scaling, Analogue Output Scaling, DP Auto Range Switching, Status Input, Counter Input, Alarm Output, PID control, Override selection
