Teledyne 200EU-NOy Option Manual Addendum Marine Battery User Manual


 
Model 200EU-NOy Option Manual Addendum
3.0 The M501Y NOy Converter
3.1 Principle of Operation
The API Model 200EU with NOy Option is designed to measure the concentration of NO, NO2, and
other compounds that are too unstable to be measured when taken in through the normal ambient air
sample inlet system. Please refer to the M200EU manual supplied with this system for a general
discussion of the operation of a NOx analyzer. The suite of compounds known collectively as NOy is
composed of roughly 30 compounds. There is some disagreement over whether certain compounds
should be on the list. The NOy measurement is generally done in conjunction with a standard NOx
measurement, with the difference between the two being the concentration of the unstable compounds,
sometimes referred to as NOz.
The system is composed of 3 modules:
The M200EU, without a moly converter
A Bypass pump chassis containing:
Bypass pump
Flow control
Sample filtration
Moly temperature control
Pneumatic provisions for calibration
An externally mounted molybdenum converter
The M200EU w/NOy Option system allows the converter to be mounted at the sample inlet point.
This configuration provides minimal time delay between the sample inlet port and the remotely
mounted molybdenum converter. Minimizing the transit time between the sample inlet and converter
enables the conversion of labile components of NOy. The equation for the conversion is:
315
o
C
3 NO
Y
+ Mo ---> 3 NO + MoO
3
05386 Rev. A 12