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Teledyne API M100E Analyzer Operation Manual EPA Protocol Calibration
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9.1.2. DATA RECORDING DEVICE
Either a strip chart recorder, data acquisition system, digital data acquisition system should be used to record the
data from the Mode; M100E RS-232 port or analog outputs. If analog readings are being used, the response of
that system should be checked against a NIST referenced voltage source or meter. Data recording device
should be capable of bi-polar operation so that negative readings can be recorded.
9.1.3. RECOMMENDED STANDARDS FOR ESTABLISHING TRACEABILITY
To assure data of desired quality, two considerations are essential: (1) the measurement process must be in
statistical control at the time of the measurement and (2) the systematic errors, when combined with the random
variation in the measurement process, must result in a suitably small uncertainty.
Evidence of good quality data includes documentation of the quality control checks and the independent audits
of the measurement process by recording data on specific forms or on a quality control chart and by using
materials, instruments, and measurement procedures that can be traced to appropriate standards of reference.
To establish traceability, data must be obtained routinely by repeat measurements of standard reference
samples (primary, secondary, and/or working standards). More specifically, working calibration standards must
be traceable to standards of higher accuracy, such as those listed in Table 8-1.
Cylinders of
working gas traceabl
e to NIST-SRM's (called EPA Protocol Calibration Gas) are also commercially
available (from sources such as Scott Specialty Gases, etc.).
9.1.4. EPA CALIBRATION USING PERMEATION TUBES
Teledyne API does not recommend the use of permeation tubes as a source of span gas for EPA protocol
calibration operations.
9.1.5. CALIBRATION FREQUENCY
To ensure accurate measurements of the SO
2
concentrations, calibrate the analyzer at the time of installation,
and re-calibrate it:
No later than three months after the most recent calibration or performance audit to indicate an acceptable
analyzer calibration.
An interruption of more than a few days in analyzer operation.
Any repairs which might affect its calibration.
Physical relocation of the analyzer.
Any other indication (including excessive zero or span drift) of possible significant inaccuracy of the
analyzer.
Following any of the activities listed above, the zero and span should be checked to determine if a calibration is
necessary. If the analyzer zero and span drifts exceed locally established calibration units or the calibration limits
in Section 2.0.9, Subsection 9.1.3 (Q.A. Handbook), a calibration should be performed.
04515F DCN6048