:: KD ENGINEERING :: CUSTODY METERING APPLICATION ::

OVERVIEW

Provide highly integrated solutions for custody transfer measurement applications for the oil & gas industry;

Thanks to ZenOn® very powerful platform to build application solution that are platform independent with a modern network technology with distributed client-server structure and very sophisticated circular redundancy. And most of all more than 250 different driver connections that allow connection to all kind of standards in the Oil & Gas industry.

PLATFORM INDEPENDENT

Universal, secure system family (Windows® CE/2000/XP/Server 2003/VISTA including 64 bit versions/WWW)

A project needs to be created only once. Afterward, it runs on all platforms, whether CE terminal, PC or WEB solution.

Very easy to transport projects all over your different Zenon’s stations.

NETWORK TECHNOLOGY

Modern network technology with distributed client-server structure

The client always acquires all data through the network from the server. Server and client synchronize projects automatically.

If the project is changed on the server, the client automatically collects all current data online without having to end the Runtime..

CONNECTIVITY
More than 250 different driver connections:
	No time is lost when new machinery or modules are integrated.

	Spontaneous data traffic: Considerably reduces the strain on the communications channel.

	Real-time stamp including status value in the control: exact data recording.

	OPC Client: communicates with any OPCDA server
	SQL: for data exchange with ODBC-compatible SQL databases

	SNMP: used for monitoring network components such as routers, switches, hubs, PCs, PLCs

	Modbus RTU: serial or TCP/IP connection to the Modbus IDA protocol Act as a gateway like ‘Modbus gateway’ for example.

	Zenon OPC server: Zenon offering all its online variables status to the OPC layer to be accessible from any OPC client application

	DNP3, IEC 60870, Bacnet

CIRCULAR REDUNDANCY

Sophisticated redundancy that has stood the test through years of industrial use and power plant management

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CUSTODY METERING APPLICATION

	Interfaced with the DCS as per the latest protocol through serial port/ Ethernet.

	Redundant interfacing with the DCS for diagnostic alarms.
	System diagnostics, metering overview, totals, reports, trending, alarm history and summary, gas quality and also a continuous monitoring of meter diagnostics ( swirl, asymmetry ) ultrasonic foot print and ratio, velocity of sound verification and performance monitoring.

	Gas calculations in accordance with international standards such as API/AGA 10/ ISO as well as customer Specific logic.

	Inbuilt embedded communication drivers with integrated protocol analyzers.

	Graphical display page with System diagnostics containing device information for each connected device.

	Graphical display page with an overview of the metering data. It contains relevant information as retrieved from the flow computers.

	Display pages with totals for Mass, Volume and Energy. As obtained from the flow computers.

	Record and display Real time and historical trending pages, Alarm History & summary.

	Have a Gas Quality page with actual gas composition from the gas chromatograph.

	Display appropriate pages with continuously monitored ultrasonic meter diagnostics, Ultrasonic footprint & ratio, velocity of sound verification and performance monitoring.

	Totalization of individual stream data into overall station flow and flow rate totals.

	Check the validity of the stream flow computers.
	Determine the foot print based on the ratio of the VOS for each path for each ultrasonic meter and present this footprint graphically.

	Obtain diagnostic information, including status information and wave form data from the ultrasonic meters, and present these diagnostic data on a display page for the operators.

	Provide an HMI and present all retrieved and calculated date from the flow computer, ultrasonic meters and internally calculated data. A number of graphic mimic pages of the process contained in menu-structure are presented to the operator.

	Provide real-time and historical trending for all major signals in the system, including the velocity of sound for the ultrasonic meters, and other parameters.

	Provide an alarm manager for real-time alarms. alarms are derived from primary input signals as well as calculated figures. Alarms are printed on the station alarm printer and stored on the hard disk. Alarms messages and return to normal messages, as well as acknowledgements are to be reported. Alarms are suppressed when a metering line is closed.

	Validation of the meter cross section (Z) of the master meters and check meters.

	The appropriate gas composition is sent to the appropriate flow computers, after verification of the analysis in accordance with ISO6976 energy calculation on the diagnostics computer.

	The operator is able manually select either in –use gas composition or a keypad value in case of GC failure.
	Communication with the OMNI flow computer using the Modbus /Serial protocol to obtain transmitter values. flow totals , alarms, hourly data, daily data, accumulative totals per stream, and station totals. The DPM is acting as Modbus master (RTU) devices , while the flow computer act as Modbus (RTU) slave. Fiscal data is retrieved from the “Duty” stream, while adapt fir deviation checking is retrieved from the “standby” stream.

	Communication with each ultrasonic meter to obtain diagnostic and performance data, and to display all related data.
	Communication with the Gas Chromatograph to obtain gas composition data, including H2S. The gas composition data is downloaded, after validation, to the appropriate connected flow computer set. The GC data is derived from the controller is also available for transmission to the central DCS over the serial Link.

	Calculation of the velocity of sound based on the gas composition and the pressure and temperature of each meter run in accordance with the AGA -10 and monitor differences between the calculated value and the VOS per path of each connected ultrasonic meter.