Conversion Efficiency (Ce) Check; Table 4-4. Calibration Data Quality Evaluation - Teledyne T200 User Manual

Table 4-4. Calibration Data Quality Evaluation

FUNCTION
NO SLOPE
NOx SLOPE
NO Norm Offset
NOx Norm Offset

CONVERSION EFFICIENCY (CE) CHECK

This section describes how to determine the NO2 à NO converter's efficiency using a
GPT method where the actual concentration of ozone is not a factor in the accuracy of the
calculation.
• This procedure is based on the Code of Federal Regulations, Title 40, Chapter I,
subchapter C, Part 50, Appendix F.
In the following example a reference point of 450 ppb NO gas will be used. This is
•
only an example. Any other reference points within measurement range of the
instrument may be used.
For this procedure use a calibrated O
•
Note
PART 1: PREPARATION
1. Leak check machine to ensure that there are no leaks in the analyzer.
2. Calibrate the instrument at the same NO span gas value as being used in this method.
For this example we use 450 ppb NO span gas
•
102 Teledyne API T200 NO/NO
MINIMUM VALUE OPTIMUM VALUE
0.700
0.700
-20.0 mV
-20.0 mV
generator, such as a Teledyne API's T700.
3
There must be a minimum of 10% more NO than O
Example, if the O concentration used is 400 ppb, then the
3
NO concentration used must be 440 ppb or more.
/NO Analyzer with NumaView™ Software
2 x
MAXIMUM VALUE
1.000 1.300
1.000 1.300
0.0 mV 150.0 mV
0.0 mV 150.0 mV
produced.
3
083730200A DCN7962