OMNI 4000/7000 Series

Overview

The OMNI 4000/7000 flow computer series is a trusted solution for pipeline and custody transfer systems. It combines decades of metering experience and delivers primary liquid and/or gas US customary and metric calculations in a single program.

The Series parallels the popular OMNI 3000/6000, providing the same reliability and project lifecycle performance, and is ideal for pipeline systems and critical infrastructure projects where cyber-security and programming control are core requirements.

Engineering & Design

Every OMNI built in the last 25 years is factory-programmed and user-configurable, with program testing prior to factory release that exceeds project-oriented customized programmable devices. Only OMNI provides secure factory programming, testing, and verification; only field configuration is required to install, operate, and maintain the flow computer.

With full programming traceability from factory to operation, the OMNI 4000/7000 is the only flow computer to have received the European MID/WELMEC WG7.2 issue 6 extension D approval, meaning programming modifications and upgrades after factory release are controlled and traceable in accordance with metrology regulations. OMNI is an assurance partner for your Management of Change.

Key Features

• Primary liquid and gas calculations in one program
• US customary and metric units
• For pipeline and custody transfer systems
• Cyber-security focused design
• Factory-programmed, user-configurable
• Secure factory programming, testing, verification
• MID/WELMEC WG7.2 issue 6 extension D approval
• Full programming traceability
• 25 years of OMNI reliability
• Management of Change assurance

Applications

• Pipeline flow measurement
• Custody transfer metering
• Critical infrastructure projects
• Liquid and gas metering stations
• Regulated metering applications

Specifications

Custody transfer metering demands certified measurement, and the OMNI 4000/7000 flow computer provides it, which is why Seven Star LLC supplies the OMNI 4000/7000 flow computer for pipeline projects.

For custody transfer, the OMNI 4000/7000 flow computer is a widely approved instrument. Seven Star LLC supplies it factory programmed, with project documentation.

The OMNI 4000/7000 flow computer calculates the flow of the gas and the liquid with the AGA and the API standards from the raw transmitter values. The unit is mounted in the panel and the inputs are wired to the pressure, the temperature and the differential transmitters of the metering skid. The calculated values are stored in the audit trail and are output to the SCADA over the serial link.

OMNI 4000 vs OMNI 7000: Slots, I/O Modules and Communication Ports

Both models run the same firmware and support six meter runs, each of which can be set independently for liquid or gas. The hardware difference is capacity: the OMNI 4000 motherboard has 4 I/O module slots and 4 back-panel terminal blocks, the OMNI 7000 has 10 of each, and the 7000 chassis is 413 mm deep behind the panel against 241 mm for the 4000. Both share a 210 × 121 mm panel cutout, a 4.3 inch 800 × 480 colour display and a 25-key keypad.

Process signals enter through combo modules. Types A, B, E and E/D accept 4-20 mA, 1-5 V and four-wire 100 Ω RTD inputs together with flow pulses or densitometer frequency, and provide one or two 4-20 mA outputs. Only the E module offers Level A pulse fidelity and double-chronometry proving. Analog inputs have 14-bit resolution and an accuracy of ±0.025% of reading ±2 counts from -10 to +55 °C. HART modules provide 4 networks each, and a digital multiplexer module adds 10 channels for prover, sampler and status signals.

Every unit includes a dual Ethernet module with two 10/100 ports, and a second can be added for four physical ports, each allowing eight simultaneous connections. Serial modules carry two ports selectable as RS-232 or RS-485, and up to ten serial ports are possible. Supported protocols are Modbus, Modbus/TCP, LPD, Syslog, Telnet, TCP and UDP, with SSL switchable per virtual connection. Front-panel USB ports are used for configuration and for firmware updates from a memory stick. Power is 90 to 264 VAC or 22 to 26 VDC.

OMNI 4000/7000 Supported Calculations and Metrology Certifications

OMNI lists the following certifications: NMi evaluation, the Measuring Instruments Directive 2004/22/EC, the EMC Directive 2004/108/EC, OIML R117-1 (2007 edition), WELMEC 7.2 (2015 edition) Chapter P with Extensions L, T, S, D and I5, and WELMEC 8.8. Environmental classes are M3 for vibration and E2 for heavy industrial electrical environments under OIML R117-1:2007. The units are configurable but not programmable on site, which protects the approved code, and only licensed firmware files can be loaded. Software sealing can set every communication port to read-only.

Liquid calculations include API MPMS Chapter 11.1 for crude oil, refined products and lubricating oil, the 1952 historical tables 5/6, 23/24 and 53/54, ASTM D1555 and D1555M for aromatics, API MPMS 11.2.4 (GPA TP27) for LPG and NGL, and OIML R22 for alcohol. Gas calculations include API MPMS 14.3 (AGA-3) 2012, ISO 5167:2003, AGA-7 2006, AGA-8 1994 by detail or gross methods, SGERG 1988, ISO 12213-3 2006, ISO 6976 (1995), GPA 2172 (2009), AGA-5 (2009) and AGA-10 for speed of sound.

Why Seven Star LLC

Seven Star LLC supplies the OMNI 4000/7000 flow computer for metering projects across the Gulf, with verified specifications and technical support. Our team assists with configuration planning and integration with custody transfer systems.

We support pipeline operators and metering contractors with reliable B2B supply of flow computers throughout the GCC.

Installation & Operation

The flow computer is factory-programmed with the measurement algorithms and project configuration, and the installation team performs only field configuration of the I/O and communication parameters. The MID/WELMEC approval governs the programming control and traceability required for regulated metering.

Operation centres on the secure programming environment, where changes are tracked and documented for Management of Change processes. The cyber-security features protect the measurement from unauthorized access, supporting critical infrastructure requirements.

Supply Chain & Sourcing

Seven Star LLC supplies the OMNI 4000/7000 flow computer with the factory programming and project documentation required for regulated metering applications.

Our team supports the technical evaluation of the MID/WELMEC approvals for your custody transfer project.

The flow computer front panel provides the operator interface for configuration review and diagnostics, and the communication ports connect to the SCADA and metering network.

For regulated applications, the programming traceability and the MID/WELMEC approval support the audit trail required by custody transfer contracts, and the Management of Change process is supported by the factory-controlled configuration.

The OMNI platform documentation covers the metering standards and the configuration records, and the factory programming protects the measurement integrity required by custody transfer agreements.

The OMNI 4000/7000 supports the communication protocols used in pipeline telemetry, and the secure programming environment protects the metrology configuration.

Request a Quote for OMNI 4000/7000 Series

For the OMNI 4000/7000 flow computer or any related control and instrumentation requirement, contact the Seven Star LLC team. Submit a formal inquiry through our RFQ page with your configuration and application details, and our specialists will respond with a detailed commercial proposal and the official OMNI documentation.

Specifying an OMNI 4000/7000 for a Metering Skid

The 4000 and 7000 share the same firmware approach and differ mainly in chassis size and I/O capacity: the 4000 is the compact unit for smaller stations, while the 7000 accepts more I/O modules for multi-stream stations with provers and station totals. Before requesting a quotation it helps to define:

• Product and application: crude, refined products, LPG or natural gas, and whether the program must cover liquid, gas or both.
• Meter types and stream count: turbine, ultrasonic, Coriolis, positive displacement or orifice, and how many runs each unit must handle.
• Proving: bidirectional, unidirectional or small-volume prover, or master-meter proving.
• Calculation standards: the API MPMS, AGA or ISO methods the metering contract calls for.
• I/O and communications: pulse inputs, 4–20 mA and HART transmitters, digital I/O for valves and samplers, and serial or Ethernet links to the SCADA and DCS.

Integration with Plant Systems

OMNI flow computers act as Modbus slaves to supervisory systems, so batch reports, totals, alarms and live flow data can be read by the DCS, SCADA or a metering supervisory computer. Configuration is carried out with the manufacturer’s PC configuration software rather than by writing code, which keeps the certified calculation program untouched and simplifies audit. Security settings, password levels and audit trail records should be agreed with the metering engineer and, where applicable, the fiscal authority before commissioning.

Commissioning and Maintenance

• Verify every configured constant, such as K-factors, meter factors, base conditions and density or composition inputs, against the approved metering data sheet.
• Run an independent calculation check with a known set of inputs before the station goes into custody service.
• Test transmitter inputs with a calibrator at several points and check the flow computer reading, not only the transmitter display.
• Keep a controlled archive of the configuration file after each change; this is the fastest way to recover after a hardware replacement.
• Check the backup battery and archive memory during routine visits so batch and audit records are not lost on power failure.

Custody Transfer in Oman and the GCC

Flow computers of this class sit at the heart of crude export lines, refinery product dispatch, pipeline interconnections between operators, gas sales to power and desalination plants, and truck and marine loading. In these duties the flow computer’s reports are the commercial record, so hardware continuity and correct configuration matter as much as the meters themselves.

Supply and Support from Seven Star LLC

Share your metering data sheet or the part number of an installed unit and we will propose a matching OMNI 4000 or 7000 configuration, including I/O modules and spares, supplied as genuine equipment with manufacturer documentation.

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