Controller / User Interface | 4-17
Calibration Trigger
Use this to select how auto-calibration is triggered.
Calibration Trigger options include:
• Timer
Enables the Auto-Calibration timer. The system will automatically
Zero and/or Span the analyzer.
• Input1 and Input2
Auto-Calibration will be initiated by a user-supplied contact clo-
sure.
• Off
Disables Auto-Calibration. The system will not automatically Zero
or Span the analyzer regardless of what the automatic calibration
mode function is set to. The analyzer can still be manually calibrat-
ed using the Start zero calibration, Start span calibration or Start
zero+span calibration functions on the Calibration screen.
Mode
Use this to set up the type of Auto-Calibration function that will be
performed during normal analyzer operation.
Mode options include:
• Zero + Span
For its regular sequence of operation, the analyzer will perform a
Zero, followed by a Span, and then return to Measure mode.
• Span only
For its regular sequence of operation, the analyzer will perform a
Span and then return to Measure mode.
• Zero only
For its regular sequence of operation, the analyzer will perform a
Zero and then return to Measure mode.
This function is not available for applications with multi-species span
capability (i.e., when “Select span fluid” function is available on the
Calibration screen). In this case, Auto cal – if enabled (ON) – will
perform a zero calibration only. Span calibration must be done manu-
ally as described under “Manually Starting a Span Function” on page
4-21.
NOTE
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