Data Recording Device - Teledyne 200A Instruction Manual

Teledyne API Model 200A NO
7.8.2.2 Selection of NO Span Gas Standards
The NIST-SRM's provide references against which all calibration gas mixtures must be
compared (Section 2.0.7, Q.A. Handbook). The procedure requires the comparison of the
concentration of a commercial, working calibration standard to an NIST-SRM. This is described
in Subsection 7.1 of Section 2.0.7, Q.A. Handbook. Subsections 7.1.4 and 7.1.5 describe the
verification and reanalysis of cylinder gases.
Care must be taken to assure that no oxygen is allowed in the NO tank, regulator, or sample
lines. If oxygen is present, it reacts with NO to produce NO
in NO concentration measurement.
It is good practice to request a NO
Generally the maximum NO
The NO impurity in the NO standard can be measured by the M200A. A procedure is given in
2
the TAD for NO
7.8.2.3 Use of NO
The steps required to compare the concentration of a commercial working calibration standard to
an NIST-SRM are described in Subsection 7.3.3 of Section 2.0.7, Q.A. Handbook. See
Subsection 7.3.6 for the re-analysis of permeation tubes.

7.8.3 Data Recording Device

Either a strip chart recorder, data acquisition system or digital data acquisition system should be
used to record the data from the M200A's 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.
Analyzer Instruction Manual, 02246, Rev. F1
X
analysis from the supplier of the NO calibration gas.
x
impurity that should be allowed is 1% of the NO concentration.
2
measurement.
2
Permeation Tubes As Standards
2
which can lead to significant errors
2
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