Precision Check; Auditing Procedure - Teledyne 300E Instruction Manual

Model 300E Carbon Monoxide Analyzer
Instruction Manual

8.1.5. Precision Check

A Precision Check must be carried out at least every 2 weeks and consists of a
single CO concentration between 8 and 10 ppm of CO gas. The check should be
long enough for the M300E to achieve a stable response. Precision Check data
should be used to determine the quality of the CO monitoring data.

8.1.6. Auditing Procedure

An audit is an independent assessment of the accuracy of data. Independence is
achieved by having the audit made by an operator other than the one conducting
the routine field measurements and by using audit standards and equipment
different from those routinely used in monitoring. The audit should be a true
assessment of the measurement process under normal operations without any
special preparation or adjustment of the system. Routine quality control checks
conducted by the operator are necessary for obtaining and reporting good quality
data, but they are not considered part of the auditing procedure. Audits are
recommended once per quarter, but frequency may be determined by applicable
regulations and end use of the data.
Refer to The Q. A. Handbook Volume II, Section 2.6.6
detailed description.
8.1.6.1. Calibration Audit
A calibration audit consists of challenging the M300E with known concentrations of
CO. The difference between the known concentration and the analyzer response is
obtained, and an estimate of the analyzer's accuracy is determined.
The recommended audit schedule depends on the purpose for which the monitoring
data are being collected. For example, Appendix A, 40 CFR 58
analyzer in State and Local Air Monitoring Networks (SLAMS) be audited at least
once a year. Each agency must audit 25% of the reference or equivalent analyzers
each quarter. If an agency operates less than four reference or equivalent
analyzers, it must randomly select analyzers for re-auditing so that one analyzer
will be audited each calendar quarter and so that each analyzer will be audited at
least once a year.
Appendix B, 40 CFR 58
deterioration) reference or equivalent analyzer be audited at least once a sampling
quarter. Results of these audits are used to estimate the accuracy of ambient air
data.
P/N 04288 REV: A
4
requires that each PSD (prevention of significant
EPA Protocol Calibration
5
(Reference 5) for a more
3
requires that each
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