Equipment Overview - Omni 4000 Series Installation Manual

1.4

Equipment Overview

OMNI 4000s and 7000s are microprocessor-based flow computers that perform liquid and gas
flow calculations in accordance with the methods listed in Section 1.3 Calculations.
The flow computer connects to field transmitters in single and multiple meter run applications
to monitor:
•
Liquid and gas flow measurements in the pipeline.
•
Custody transfer applications.
The flow computer calculates flow values and displays additional data and measurement
information, which can be transmitted over communication channels and printed, as needed.
In addition, audit trail logs are available for registering changes to measurement parameters and
firmware updates. The audit trail can be printed directly from the front panel of the flow computer
or viewed with the OMNICONNECT software when connected to a computer.
All input/output (I/O) modules are quality tested and temperature trimmed to optimize analog
inputs before the flow computer is shipped.
On-site, OMNI 4000/7000 flow computers are configurable, but not programmable. We do this to
prevent the modification of WELMEC-approved software code, which could render an existing
EC-evaluation certification invalid.
With an OMNI flow computer, the factory-programmed software does not need modification in the
field. This preserves the integrity of existing certifications and provides assurance that software
and firmware have been validated and cannot be modified.
Every OMNI 4000/7000 flow computer has the following components and features:
Hardware
•
7201 central processing unit (CPU)
•
4.3-inch (10.922 cm) Color LCD with 800
x 480 resolution
•
USB Mini-B port on the front panel for
configuring the flow computer
•
USB-A Host port on the front panel for
updating the OMNI CPU firmware using a
memory stick
•
USB Mini-B port on the CPU for
configuration or updating the OMNI CPU
firmware using OMNICONNECT
•
Dual Ethernet (DE) module with:
−
2 onboard RJ-45 100 Mbps Ethernet
jacks
−
10 Mbps using the back panel
•
Expandable to allow for 2 DE modules (4
physical Ethernet ports for a total of 32
virtual connections).
1-6
OMNI 4000/7000 Installation Guide – Rev H
The OMNI 4000/7000 Series
•
Expandable to allow for up to 10 Serial
ports with different combinations of DE
and S cards. Must purchase separately.
•
Digital I/O Multiplexer (DM) module with
10 independent channels
•
Digital I/O channels that support up to 3
externally installed Digital Terminals
(DTs), which can be used in sequence.
Each DT contains 16 I/O points. DTs are
optional purchase items.
•
2 local printers, which can be connected
to any serial port