Calibration Check Procedures; Zero / Span Check Set-Up; Table 3-2. Zero/Span Check Set Up - Thermo Scientific Mercury Freedom 80i Manual

Calibration

Calibration Check Procedures

Calibration Check
Procedures

Zero / Span Check Set-up

3-4 Mercury System Manual
The system calibration check requires the calibration gas to go through all
system components. The calibration check must be done daily with either
0
Hg or HgCl . Since the system uses a converter, if elemental Hg is used,
2
you must do weekly system integrity checks.
The 80i automatic calibration check requires the following pre-conditions:
Analyzer Service Mode must be OFF.
Analyzer must control the Calibrator.
Refer to Table 3–2 for setting up the Zero/Span Check (from the Main
Menu, select Calibration > Auto Zero/Span Check).
Table 3–2. Zero/Span Check Set Up
Parameter
Instrument Zero Duration
Min
Instrument Span
Duration Min
Instrument Zero Cal
Reset
Instrument Span Cal
Reset
Instrument Hg Span Conc
Sys Zero Durat Min
Sys Span Durat Min
Sys Zero Cal Reset
Sys Span Cal Reset
Sys Span Conc
Setting
Duration of Analyzer Zero - typically 5 to 6 minutes
Duration of Analyzer Span - typically 5 to 6 minutes
Automatically update the Analyzer Background factor at the end of
Zero Duration step
Automatically update the Analyzer Coefficient at the end of Span
Duration step
Target value for Instrument Span. Update this value for Linearity
Check.
Duration of Sys Zero - typically 10 to 15 minutes
Duration of Sys Span - typically 10 to 15 minutes
Automatically update the Sys Background factor
Automatically update the System Hg(0) / Hg(t) coeff
Target value for Sys Span. Update this value for Linearity Check.
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