XDT User’s ManualvTable of Contents1.0 Overview of the Dewpoint Transmitter model (DT) ...........................................................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 Dewpoint Transmitter (DT)..............................................................93.1.1 Electromagnetic Compatibility Considerations ................................................................93.2 Instrument Technical Specifications..................................................................................103.3 Installation .........................................................................................................................113.3.1 Instrument Mechanical Installation ................................................................................113.3.1.1 DT-PM (DIN43700) Enclosure Installation ................................................................113.3.1.2 DT-NEMA (IP65) Enclosure 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 ...................................................39Appendix C: Sensor Mechanical .............................................................................................40