Instruction manual

120-00004 REV A 10/6/2011 4000 DIGITAL MANUAL PAGE 14
3.3 Calibration Procedure
Analyzer must be zeroed prior to calibration (sec 2.1).
1. For all gases, except Chlorine or other chemisorbable types, fill the 5
liter sample bag with calibration gas, and attach it to the external inlet
fitting. This is best done by attaching a short length (2 inch) of 5/16 inch
(7.9 mm) O.D. flexible tubing to the sample bag nipple, then attaching
the tubing to a 2 inch (51 mm) length of ¼ inch (6.4 mm) O.D. rigid
tubing contained within a gas fitting nut securely fastened to the inlet
fitting.
2. Set the FUNCTION switch to SAMPLE.
3. Allow 2 to 3 minutes for the reading to stabilize, and by using the
SPAN/CAL control, set the display to match the calibration gas
concentration being used.
4. Remove the sample bag from the analyzer and allow the display to
stabilize.
5. The analyzer is now calibrated and set up for operation.
NOTE: If you require additional information on Calibration
procedures, please contact the Service Department at 1-800-458-
6153 ext 121 or e-mail [e-mail]