1. IT Series Gas Sensor Modules IT I nformation T echnology

2. Presentation Outline Introducing IT Series 5100-28-IT 5100-02-IT IT as part of the control/monitoring system

3. Sierra Monitor – Industry Leader First - microprocessor based gas detection controller First - digital sensor to controller communication First - controller based non-intrusive calibration First - Modbus communication to PLCs and DCS First - comprehensive protocol converter First - WebServer for browser access to hazardous gas detection information

4. IT Introducing IT Series IT Series (Information Technology) gas detection modules are the next generation of components of Gas Risk Management Systems. As the name implies, these systems offer further advancement in information technology and interoperability. –Multiple communication choices –Stand alone or system based operation –Extensive menu based operation –Flexible configuration parameters

5. IT Features and Benefits Common features of all Sentry IT Gas Sensor Modules –Integral LED display – to aid in calibration and setup –Non-Intrusive calibration – for area safety –Integral alarm relays – to meet output requirements –Optically isolated 4-20 mA output – flexibility of output –Modbus RS-485 interface – modern DCS/PLC interface –SMC Sentry digital bus interface – for existing users –Optional remote sensor configuration – for hard to access areas –Optional integral control relay– when more power is required

6. IT Series Display Scrolling LED display advantages –Easy to read in bright sun or dark corners! –Scrolling to provide more detailed and user-friendly messages 1 0 0 % L E L A p p l y z e r o g a s, e n t e r w h e n d o n e C A L I B: C A L – 0 % 1 0 0 % L E L

7. Key 1 MODE Key 2 ENTER Key 3 UP (-) Key 4 DOWN (+) IT Non-Intrusive Calibration and Operation Non-Intrusive Configuration using Magnetic switches for configuration of: –Alarm setpoints –Alarm acknowledge –Calibration –Engineering Units –Digital/Analog communications setup

8. IT Series Data Access Optically isolated 4-20 mA RS-485 Modbus RTU Sentry bus to interface to existing and new Sentry systems Easy to read scrolling LED display Optional integrated 8 amp control relays Integral 0.5 amp alarm relays

9. IT Transmitter Module

10. Presentation Outline Introducing IT Series 5100-28-IT 5100-02-IT IT as part of the control/monitoring system

11. 5100-28-IT IR Combustible Gas Module Model 5100-28-IT –Description –Features –IR Technology Benefits –Principle of Operation –List of Gases

12. 5100-28-IT Description Non-Dispersive Infrared technology 0-100% LEL or 0-100% by Volume Methane (FM Approved) Other combustible gases including Ethane, Propane, Butane, Pentane, Hexane and others

13. Easy to read LED scrolling display FM approval for performance, operation, and environment conditions Fast speed of response <10 seconds T-60% with flame arrestor Multiple integral interfaces – Relays, 4-20 mA, Modbus RTU, and Sentry 5100-28-IT Key Selling Features

14. Infrared Technology Benefits Reduced need for calibration Lower operating costs – long life sensor Operates in high combustible gas and/or low oxygen environment Immune to catalytic bead poisons Rapid recovery after exposure to >100% concentrations of hydrocarbon gas Monitor in 0-100% LEL or 0-100% Volume ranges

15. 5100-28-IT Principle of Operation Combustible gases absorb IR light energy at defined wavelengths Higher concentration results greater absorbance Detector measures energy from the IR light and compares to the energy emitted by source Difference in energy received indicates level of gas concentration Wavelength (microns) Methane Spectrum Relative Intensity

16. Gases Absorbed by IR Spectra GasResponse Hexane  Hexanol  Naphthalene  Nonane  Octane  Octanol  Pentane  Pentanol  Propane  Propanol  Propylene  Styrene  Toluene  Xylene  GasResponse Methane  Benzene  Butane  Butanol  Cyclobutane  Cyclohexane  Cycloheptane  Cyclopentane  Decane  Ethane  Ethanol  Ethyl Benzene  Heptane  Heptanol 

17. Presentation Outline Introducing IT Series 5100-28-IT 5100-02-IT IT as part of the control/monitoring system

18. 5100-02-IT Catalytic Bead Combustible Gas Module Model 5100-02-IT –Description –Features –Catalytic Bead Technology Benefits –Principle of Operation –List of Gases

19. All the IT features PLUS proven Catalytic Bead technology 0-100% LEL FM Approved for performance, operation and environment for Combustible gases (Class I, Div. 1, Groups B, C, and D) FM Approved with 6 month calibration interval 5100-02-IT Description

20. Easy to read scrolling LED scrolling display 6 month, FM approved calibration interval, longest in the industry FM approval for performance, and environment conditions Fast speed of response <12 seconds T=60% Multiple integral interfaces - Relays, 4-20 mA, Modbus RTU and Sentry outputs 5100-02-IT Key Selling Features

21. Catalytic Bead Technology Benefits Proven technology Measures all combustible gases Lower costs

22. 5100-02-IT Principle of Operation Two alumina beads surrounded by platinum wire Bead 1 passivated Bead 2 catalyzed to react When catalyzed bead heats up with combustible gas, increase in resistance increasing output of Wheatstone bridge signal

23. Gases Detectable by 5100-02-IT GasResponse Hydrazine  Hydrogen  JP-4 (Jet Fuel)  Methyl Acetate  Methanol  Methyl Chloride  Methylethylketone  Napthalene  Nonane  Octane  Pentane  Propane  Toluene  Xylene  GasResponse Methane  Ammonia  Benzene  Butane  Cyclopropane  Decane  Dioxane  Ethane  Ethanol  Ethylene  Diethyl Ether  Dimethyl Ether  Hepane  Hexane  Sample of gases detectable by catalytic bead technology, check with Sierra Monitor for a complete list

24. Presentation Outline Introducing IT Series 5100-28-IT 5100-02-IT IT as part of the control/monitoring system

25. Key Features of IT Series Unique features –Long calibration intervals –Multiple integral data interface – relays, digital display, 4-20 mA, Modbus, Sentry –FM Approval for performance and hazardous location

26. How IT is Part of Gas Sensing Solutions Flexible configuration –System/Controller based solutions Sentry-based Ethernet-based –Sensor module solutions Modbus RTU interface 4-20 mA interface Alarm only

27. Sentry-Based Solution – Basic Gas Detectors Sentry Bus & VDC Distributed Control System IT Sensor Module  Sentry  Modbus  DCS Modbus RTU

28. Sentry-Based Solution - Commander Gas Detectors Sentry Bus & VDC Distributed Control System IT Sensor Module  Sentry  Commander  Modbus  DCS Sentry Commander Sentry Controllers Modbus RTU

29. Sentry-Based Solution - FieldServer Gas Detectors Sentry Bus & VDC IT Sensor Module  Sentry  FieldServer  Protocol  DCS Protocol matching customer’s needs Sentry Controllers FieldServer Protocol Translator PC based DCS Modbus RTU

30. Ethernet-based Solution Internet Access Modem FieldServer w/ WebServer Local PC w/ MS Explorer Broadband Internet Gas Detectors RS-485 Modbus & VDC AC/DC Power Supply and termination panel AC Power Ethernet Hub Remote Monitoring PC w/ MS Explorer IT Sensor Module  FieldServer  WebServer  Internet

31. Sensor Module Solutions 4-20 mA Interface –IT Series –4101 Series –4100 Series Modbus RTU –IT Series Alarm Only –20X/200X –Hydrides/Ammonia

32. 5100-02-IT Demonstrator Compact complete demo –4-20 mA output –Alarm relays –Control relays –Modbus RTU –Digital display

33. IT Series A Sense of the Future