XDT Manual - Pioneer Air Systems Engineering

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XDT User’s ManualTable of Contents1.0 Overview of the XDT ..........................................................................................................12. Sensor and Sampling Techniques ..........................................................................................32.1 Precautions using the sensor ................................................................................................32.2 Sensor Technical Specifications ..........................................................................................42.3 Sensor Installation & Sampling Techniques........................................................................42.3.1 In-situ Installation .............................................................................................................52.3.2 Extractive Installation .......................................................................................................62.4 Mechanical Installation........................................................................................................72.5 Troubleshooting unexpected readings .................................................................................83. Instrument ..............................................................................................................................93.1 Precautions using the XDT ..................................................................................................93.1.1 Electromagnetic Compatibility Considerations ................................................................93.2 Instrument Technical Specifications..................................................................................103.3 Installation .........................................................................................................................113.3.1 Instrument Mechanical Installation ................................................................................113.3.1.1 XDT-PM (DIN43700) Enclosure Installation .............................................................113.3.1.2 XDT-NEMA (IP65) Enclosure Installation.................................................................113.3.1.3 XDT-OEM bare board Installation ..............................................................................113.3.2 Electrical Connections ....................................................................................................123.3.2.1 Connecting Power........................................................................................................123.3.2.1.1 AC Mains Electrical Power Connection...................................................................133.3.2.1.2 Low Voltage DC Powered Option - Electrical Power Connection...........................133.3.2.2 Sensor Connection .......................................................................................................133.3.2.3 Wiring the Alarm Contacts ..........................................................................................133.3.2.4 Interfacing to the Analog Output .................................................................................143.3.2.5 Interfacing to the RS-232 option .................................................................................153.4 Operating the Instrument ...................................................................................................153.4.1 Starting up.......................................................................................................................153.4.2 Display Conventions.......................................................................................................163.4.3 Push Buttons ...................................................................................................................163.4.4 Operating State ...............................................................................................................173.4.4.1 Viewing Dewpoint Mode.............................................................................................173.4.4.2 Alarms..........................................................................................................................193.4.4.3 Start Calibration...........................................................................................................203.4.4.3.1 SpanCheck Mode ..................................................................................................213.4.4.3.2 Single Point Self Calibration, manual or scheduled .................................................223.4.4.4 Viewing Serial Number Mode.....................................................................................253.4.5 SetUp State .....................................................................................................................253.5 Resetable Audio-Visual Alarm Option (NFPA compliant)...............................................283.6 Troubleshooting the Instrument.........................................................................................293.7 Maintenance.......................................................................................................................31Glossary ...................................................................................................................................33Appendix A: Flow Diagram of Operating State User Interface ..............................................37Appendix B: Flow Diagram of Set-Up State User Interface ...................................................39v
XDT User’s ManualAppendix C: Sensor Mechanical .............................................................................................40Appendix D: Optional Sensor Fittings.....................................................................................41Appendix E: XDT Circuit Board Dimensions.........................................................................42Appendix F: Sensor/SpanCheck Theory of Operation ........................................................45Appendix G: Dewpoint Response time Analysis ....................................................................46Appendix H: Sample Gas Filter Considerations......................................................................48Appendix I: XDT Grounding Considerations..........................................................................49Appendix J: Analog Output vs. Dewpoint...............................................................................50Appendix K: RS-232C Interface Protocol ...............................................................................52Appendix L: Procedure for Exchanging XDT Sensors............................................................55Appendix M: Uncertainty in LBS & ppmV calculations ........................................................56Appendix N: Certifications - Approvals - Conformity............................................................57Appendix O: Return Authorization Number Request Form....................................................59Index.........................................................................................................................................61vi
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