39
The indicator for each solenoid will be grey if the solenoid is off, and green if the solenoid is
energized.
4.4.3.5 Relays
The Relays section shows the current status of the analyzer’s four solid state relays. Solid state
relays can be used for status enunciation if connected to a remote device such as a DCS. If the
indicator for a given relay is grey, that indicates that the relay is in the inactive state. If the
indicator is green, that indicates that the relay is active. Relays can be configured to either be
active ON or active OFF, depending on the user requirements. Configuration of relay behaviour is
set in the Outputs page.
4.4.3.6 Communication Indicators
The last two sections are indicators that show the status of the communication between the
analyzer’s TDLAS control module and the IO board, as well as between the IO board and the
controller board. If these indicators are green, the communication is normal. If one or both of
these indicators are red, there is a communication fault and the analyzer will not be able to
function normally.
4.4.4 Global Page
The Global page allows the user to view and edit a variety of parameters that impact the overall
configuration and operation of the analyzer. The Global page is shown in Figure 36.
Figure 28: Global Page
Items on the Global page can be edited as long as the user is logged in to Update mode. There are
several sections on the Global page.
4.4.4.1 Site Identification
The three fields in the Site Identification field are used to provide unique identifiers for the
AccuLase-GPA™. The Serial Number field is set at the factory and should not be changed under
any circumstances, as this serial number allows the factory to review the analyzer’s hardware
configuration should service be required. The Tag and Location fields can be set by the user as per
their site-specific requirements.
4.4.4.2 IO Board
The IO board section shows the firmware revision and database revision for the AccuLase-GPA™
IO board. These parameters are useful for troubleshooting purposes. They are not user editable.
4.4.4.3 Analysis
The Analysis section contains several user configurable parameters that affect the analyses
carried out by the AccuLase-GPA™. These parameters are described in Table 10.
