Calibration Frequency; Other Quality Assurance Procedures - Teledyne 200E Instruction Manual

Model 200E Instruction Manual
Second, turn on and adjust the O
decrease the NO concentration to about 10% of full scale. This will be equivalent to 80% of
the URL of the NO channel. After the analyzer responses stabilize, record the resultant NO,
2
NO , and NO concentrations.
X 2
NO CONVERTER EFFICIENCY
2
if the NO reading should drop to less than 96% of its starting value during this step, it
X
indicates the NO converter is in need of troubleshooting or replacement. See Chapter 11
2
for further details.
While maintaining all other conditions, adjust the ozone generator to obtain several other
concentrations of NO
Record the NO, NO , and NO
X
Calculate the resulting NO
[
Where [NO] is the NO concentration before the GPT ozone is turned on, and [NO]
ORIG
the NO remaining after GPT.
Plot the NO concentration output by the instrument on the y-axis against the generated
2
NO [NO ] on the x-axis. The plot should be a straight line within the ± 2% linearity
2 2 OUT
criteria given for the NO
that the converter needs replacing. See Section 7.1.7 on NO

8.4. Calibration Frequency

To ensure accurate measurements of the NO, NO
analyzer at the time of installation, and re-calibrate it:
• No later than three months after the most recent calibration or performance audit
which indicated analyzer calibration to be acceptable.
• 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 the
calibration limits in Section 12 of the Q.A. Handbook

8.5. Other Quality Assurance Procedures

Precision is determined by a one-point check at least once every two weeks. Accuracy is
determined by a three-point audit once each quarter.
044100102 Rev A
generator in the calibrator to produce sufficient O
3
evenly spaced between the 80% URL point and the zero point.
2
concentrations for each additional point.
2
concentrations as follows:
2
= [NO
] ]
NO
2
OUT ORIG
and NO channels. If the plot is not linear the most likely cause is
x
*
F
NO
- [NO +
]
REM
converter efficiency.
2
, and NO concentrations, calibrate the
X 2
6
, a calibration should be performed.
EPA Protocol Calibration
[
]
NO
2
IMP
F
T
to
3
Eq 8-9
is
REM
135