Yokogawa Extractive Oxygen Gas Analyzer TDLS220 - Manual (Page 64)

<7 ROUTINE MAINTENANCE> 7-11
IM 11Y01B02-01E-A 4th Edition September 11, 2012-00
7.4 Validation and Calibration
There are several methods that can be used to validate and/or calibrate the TDLS220 TDL analyzer.
Generally, we recommend routine validation of the analyzer either on-line (if appropriately set-up) or off-
line.
Actual calibration should only be performed if certain performance criteria have not been met during the
validations and should only be performed by appropriately qualified personnel.
The options for Validation and Calibration are:
7.4.1 Off-Line Manual/Automatic Checking/Validation
Validate Off-Line (or Cal Check)
Manual (Zero - Span)
Manual introduction of zero or span gas and follow manual
procedure via user interface
Calibrate Off-Line
Manual (Zero – Span)
Manual or automatic introduction of Zero and Span gases for
validation or calibration (when equipped with appropriate hard-
ware, valves, etc.)
MANUAL OFFLINE VALIDATIONS
Enter into the Advanced Menu, Calibrate &
Validate section, Off-Line Validations.
Choose Check gas 1, 2 or 3 and select
Manual Validation.