Teledyne 100E, Instruction Manual

Page: 153 / 258

Model 100E Instruction Manual EPA Protocol Calibration
045150102 Rev XB1 151
The analyzer should be calibrated on the same range 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.
8.4.1.
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 7.2 for analyzer’s
with no valve options or with an IZS valve option installed and Section 7.5 for analyzer’s
with Z/S options installed with the following exception:
8.4.2.
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 set up; sources of zero air and sample gas and
procedures should conform to those described in Section 7.3 for analyzer’s with no valve
options or with an IZS valve option installed and Section 7.6 for analyzer’s with Z/S options
installed 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; see 40 CFR 58 for procedures for calculating and reporting precision.
8.5. Dynamic Multipoint Span Calibration
Dynamic calibration involves introducing gas samples of known concentrations to an
instrument in order to record the instruments performance at a predetermined sensitivity
and to derive a calibration relationship. A minimum of three reference points and one zero
point uniformly spaced covering 0 to 90 percent of the operating range are recommended
to define this relationship.
The analyzer's recorded response is compared with the known concentration to derive the
calibration relationship.
To perform a precision check, the instrument set up, sources of zero air and sample gas
should conform to those described in Section 7.2.