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KM9106 Operators Manual
61
B. NOx CALCULATIONS
ONLY an NO Sensor fitted.
working in ppm: NOx referenced to NO
The user can select the assumed NO
2
percentage and the O
2
normalised level
then: NOx in ppm = NO in ppm multiplied by (1 + assumed NO
2
percentage)
in this setup NOx can only be displayed as NOx = NO
then normalising:
NO in ppmn = NO in ppm multiplied by (21 minus the O
2norm
setting)
and then divided by (21 minus the actual O
2
reading)
For a worked example assume:
NO is 1000ppm
NO
2
is 5% of NO
O
2norm
is set to 3%
actual O2 is zero
NOx in ppm = 1000 x (1 +5/100) =1000 x1.05 = 1050 ppm
NO ppm n = 1000 x (21 - 3)/(21-0) = 1000 x 18 / 21 = 857 ppm n
NOx ppm n = 1050 x 18 / 21 = 900 ppm n
or
NOx ppm n = 857 x 1.05 = 900 ppm n
working in mg/m
3
: NOx referenced to NO or NO
2
The user can select the assumed NO
2
percentage, the O
2
reference level and whether
the NOx reading is referenced to NO or NO
2
referenced to NO
NO in mg/m
3
= NO in ppm multiplied by 1.34
NOx in mg/m
3
= NO in mg/m
3
multiplied by (1 + assumed NO
2
percentage)
- 1.1 Handset Features 1
- Commonly used keys 1
- 1.2 Analyser Layout 2
- 1.4 Analyser Connections 4
- 2. SAFETY WARNING 5
- 3. FIRST TIME USE 5
- 4. NORMAL START UP SEQUENCE 7
- 4.4 Sampling the Flue Gas 11
- KM9106 Operators Manual 12
- 4.9 HC104 Module 13
- 5. USING THE KEYPAD 14
- CONTRAST 16
- 6. USER SELECTABLE SETTING 17
- 7. PRINTING INFORMATION 31
- DATA LOGGED 0123 38
- 8.2 Batteries 38
- 8.4.1 Setting Up Your PC 42
- 9. CONTINUOUS MONITORING 44
- 10. Main Purge 45
- 11. MAINTENANCE 48
- 12. PROBLEM SOLVING 51
- 13. ANNUAL RE-CALIBRATION 52
- 14. HOW TO GET EXPERT HELP 53
- 15. PRODUCT SPECIFICATION 54
- APPENDICES 57
- B. NOx CALCULATIONS 61
- ONLY an NO 63
- D. CALCULATION OF FUEL DATA 66
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