Teledyne API Model 200A NOX Analyzer Instruction Manual, 02246, Rev. G, DCN 5247

Table 7-7-12: Activity Matrix for Calibration Procedure

Equipment/
Supplies Acceptance Limits Frequency And Method
Of Measurement Action If Requirements
Are Not Met
Calibration
gases
Sec. 2.0.7, Subsec. 7.1
(Q.A. Handbook)
Assayed against an
NIST-SRM quarterly,
Sec. 2.0.7 (Q.A.
Handbook)
Working gas standard is
unstable, and/or
measurement method is
out of control; take
corrective action such as
obtaining new calibration
gas.
Dilution gas Zero air, free of
contaminants; TAD2 and
Sec. 2.0.7, Subsec. 7.1
(Q.A. Handbook)
See TAD2 Return to supplier or take
appropriate action with
generation system
Multi-point
calibration
(GPT)
1. tR < 2 minutes PR >
2.75 ppm/min
2. Use calibration
procedure in Subsec.
2.4 (Q.A Handbook);
also TAD2 and Federal
Register
3. Converter efficiency >
96%
Method
1. Subsec. 8.4.2
(this manual)
2. Subsec. 8.5 (this
manual), TAD2,
Federal Register and
Table 8-8-3; see
Subsec. 8.2 for
frequency
3. Subsec. 8.6 (this
manual) and Table 8-
8-6 and Table 8-8-7
1. Adjust flow conditions
and/or reaction chamber
volume to meet
suggested limits
2. Repeat the calibration
3. Replace or service the
converter

7.8.2 Calibration Gas and Zero Air Sources

7.8.2.1 Production Of Zero Air

Devices that condition ambient air by drying and removal of pollutants are available on the

commercial market such as the Teledyne API Model 701 Zero Air Generator. We recommend

this type of device for generating zero air. Detailed procedures for generating zero air are in

TAD2.

7-14

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