Calibration
References
Thermo Fisher Scientific
Model 48
i
Instruction Manual
4-9
12.
Use
to move the cursor and
to increment or
decrement the digit values until they match the concentration being
introduced to the instrument. Press
.
The instrument will perform a series of calculations and save the new
parameters.
13.
Press
to back up a step in the Service Mode menu.
14.
Select Coefficients and press
.
The instrument will automatically calculate the new coefficients and
save the new parameters.
15.
Repeat Steps 1 through 12 for Hi Multi-Point Cal.
1.
Section 12 of EPA-454/R-98-004,
Quality Assurance Handbook for Air
Pollution Measurement Systems
, Volume II, Part 1, August 1998,
available at www.epa.gov/ttn/amtic/qabook.html, and 40 CFR 50,
Appendix C “Measurement Principle and Calibration Procedure for the
Measurement of Carbon Monoxide in the Atmosphere (Non-
Dispersive Infrared Photometry)”.
Section 12 also provides information on “Calibration of Primary and
Secondary Standards for Flow Measurements”.
Specific information on certification of concentration standards is given
in EPA-600/R93/224,
EPA Traceability Protocol for Assay and
Certification of Gaseous Calibration Standards
, 1993 Available from
www.NTIS.gov (PB94130424).
References
