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EPA Protocol Calibration Teledyne API - T100 UV Fluorescence SO2 Analyzer
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Single range selection. Refer to Section 5.4.3.1 of this manual. If the instrument will
be used on more than one range, it should be calibrated separately on each
applicable range.
Automatic temperature/pressure compensation should be enabled. Refer to Section
5.5.
Alternate units: ensure that the ppb unit
s
are selected for EPA monitoring. Refer to
Section 5.4.4.
The analyzer should be calibrated on th
e same range used for monitoring. If the AUTO
range mode is selected, the highest of the ranges will result in the most accurate
calibration, and should be used.
10.4.1. PRECISION CALIBRATION
To perform a precision calibration, the instrument set up; input sources of zero air and
sample gas and; procedures should conform to those described in Section 9.2 for
analyzers with no
valve options or IZS valve option installed and Section 9.5 for
analyzers with IZS options
installed with the following exception:
10.4.2. PRECISION CHECK
A periodic check is used to assess the data for precision. A one-point precision check
must be carried out at least once every 2 weeks on each analyzer at an SO
2
concentration
between 0.08 and 0.10 ppm. The analyzer must be operated in its normal sampling
mode, and the precision test gas must pass through all filters, scrubbers, conditioners,
and other components used during normal ambient sampling. The standards from which
precision check test concentrations are obtained must be traceable to NIST-SRM. Those
standards used for calibration or auditing may be used.
To perform a precision check, the instrument setup; sources of zero air and sample gas
and procedures should conform to those described in Section 9.1.1 for analyzers with no
valve options or IZS valve option i
nstalled and Section 9.6 for analyzers with Z/S or IZS
options in
stalled with the following exception:
Connect the analyzer to a precision gas that has an SO
2
concentration between 0.08 and
0.10 ppm. If a precision check is made in conjunction with a zero/span check, it must be
made prior to any zero or span adjustments.
Record this value. Information from the check procedure is used to assess the precision
of the monitoring data; refer to 40 CFR 58 for procedures for calculating and reporting
precision.
06807C DCN6650