Capabilities; Functionality; Figure 1-1 Typical G4 Ex Installation - ABB XSeries G4 6200 User Manual

1.1.1 Capabilities

The G4 EX is packaged in a small, explosion-proof cast aluminum enclosure
which accommodates the processor board, termination board and display. The
power supply, charging source and radio communication applications must be
housed in separate accommodations. See Figure 1–1.
For the G4 EX, the integral multivariable transducer (EXIMV) is a separate unit
with no internal electronics and is attached to the bottom of the enclosure via a
threaded neck. This contains the wiring for the connection to the electronics that
are located in the enclosure.
The G4 EX defaults to the retention of daily and log period records for 40 days
and the retention of 200 events. These defaults can be extended, limited only by
the file storage spaces on the device.
The G4 EX may be used in conjunction with a laptop that is running PCCU32
software. PCCU32 is required for initial setup and setup of the advanced features.
The G4 EX maintains a history of alarms as well as average differential pressure
(DP), average static pressure (SP), average flowing temperature (Tf),
accumulated volume, energy and an average extension.
The G4 EX can be programmed to calculate flow rates and volumes in
accordance with AGA-3, AGA-7 or ISO-5167.
Supercompressibility calculations can be performed in accordance with either NX-
19, AGA-8 or ISO 12213-2.

1.1.2 Functionality

Functions of the G4 EX reflect a design that is practical, straightforward and
efficient. It is simple to use and easy to learn. This functionality allows for saving
time that is usually allotted for calculations and report preparation. This flow
computer allows the user to perform the following with a minimum of effort,
maximum speed and greater accuracy.
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Figure 1–1 Typical G4 EX installation
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