3.3. Human-machine interface (HMI)
Figure 3.4: Example of interactive display/operation panel
The actual interface to the human operator, the human-machine interface (HMI), essentially
consists of an interactive display behind a glass window, also called operation panel, and two status
LEDs that indicate the status of the device.
During normal operation the GasLab Q2 can be operated completely via the operation panel, which
is equipped with 7 touch fields, as it allows direct reading of the measured and target values as well
as control and settings. A screen keyboard is displayed if necessary. Various languages are possible.
In addition, the HMI area consists of electronic circuits on circuit boards which are invisible to the
operator. These share the cylinder of the instrumentation area with the measuremen components
and handle the control, display and archiving of measurement data.
The glass window can be closed using a screw-on cover, the sand guard. See figures 3.5 and 5.1.
Operation and control are not only possible directly at the instrument, but also remotely via network
and with the corresponding PC software.
The software is described in more detail in chapters
7 GasLab Q2 Displays (Operate the Device) and
8 Configuration and analysis software enSuite
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