Trace Oxygen Analyzer | Operation | |
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4.2 Using the Data Entry and Function Buttons
Data Entry Buttons: The __ arrow buttons select options from the menu currently being displayed on the VFD screen. The selected option blinks.
When the selected option includes a modifiable item, the __ arrow buttons can be used to increment or decrement that modifiable item.
The Enter button is used to accept any new entries on the VFD screen. The Escape button is used to abort any new entries on the VFD screen that are not yet accepted by use of the Enter button.
Figure 4-1 shows the hierarchy of functions available to the operator via the function buttons. The six function buttons on the analyzer are:
•Analyze. This is the normal operating mode. The analyzer monitors the oxygen content of the sample, displays the percent of oxygen, and warns of any alarm conditions.
•System. The system function consists of seven sub functions that regulate the internal operations of the analyzer:
•Track or hold values during calibration
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•Password assignment
•Self
•Checking software version
•Logging out.
•Show Negative
•Zero. Used to set up a zero calibration.
•Span. Used to set up a span calibration.
•Alarms. Used to set the alarm setpoints and determine whether each alarm will be active or defeated, HI or LO acting, latching, and/or failsafe.
•Range. Used to set up three analysis ranges that can be switched automatically with
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