Table of Contents 
Manufacturer’s Statement .............................................................................................................................................. 10 
Notice .............................................................................................................................................................................. 10 
Safety Requirements ....................................................................................................................................................... 11 
Warranty .......................................................................................................................................................................... 11 
Service and Repairs .......................................................................................................................................................... 12 
CE Mark Declaration of Conformity ................................................................................................................................. 13 
Claims for Damaged Shipments and Shipping Discrepancies .......................................................................................... 14 
Internationally Recognised Symbols on Ecotech Equipment ........................................................................................... 15 
Manual Revision History .................................................................................................................................................. 16 
1.  Introduction .................................................................................................................................... 19 
1.1  Description .......................................................................................................................................................... 19 
1.2  Specifications ...................................................................................................................................................... 19 
1.2.1  Measurement ...................................................................................................................................... 19 
1.2.2  Precision/Accuracy .............................................................................................................................. 19 
1.2.3  Calibration ........................................................................................................................................... 20 
1.2.4  Power   ................................................................................................................................................ 20 
1.2.5  Operating Conditions ........................................................................................................................... 20 
1.2.6  Communications .................................................................................................................................. 21 
1.2.7  Physical Dimensions............................................................................................................................. 21 
1.2.8  Certifications ........................................................................................................................................ 21 
1.3  Nomenclature ..................................................................................................................................................... 22 
1.4  Background/Theory ............................................................................................................................................. 23 
1.4.1  Measurement Theory .......................................................................................................................... 23 
1.4.2  Kalman Filter Theory ............................................................................................................................ 24 
1.5  Instrument Description ....................................................................................................................................... 25 
1.5.1  Calibration Valve Manifold .................................................................................................................. 25 
1.5.2  Auxiliary Valve Manifold ...................................................................................................................... 25 
1.5.3  Particulate Filter .................................................................................................................................. 25 
1.5.4  Delay Loop ........................................................................................................................................... 25 
1.5.5  Dryer   ................................................................................................................................................ 26 
1.5.6  Ozone Generator ................................................................................................................................. 26 
1.5.7  NO
2
 to NO Converter ........................................................................................................................... 26 
1.5.8  Pressure Transducer PCBs ................................................................................................................... 26 
1.5.9  Optical Cell ........................................................................................................................................... 26 
1.5.10  Main Controller PCB ............................................................................................................................ 27 
1.5.11  Power Supply ....................................................................................................................................... 27 
1.5.12  On/Off Switch ...................................................................................................................................... 27 
1.5.13  Communications .................................................................................................................................. 27 
2.  Installation ...................................................................................................................................... 31 
2.1  Initial Check ......................................................................................................................................................... 31 
2.2  Mounting/Installing ............................................................................................................................................. 32 
2.3  Instrument Set-up ............................................................................................................................................... 33 
2.3.1  Pneumatic Connections ....................................................................................................................... 33 
2.3.2  Power Connections .............................................................................................................................. 34