IT Series Gas Sensor ModulesIT Series Gas Sensor Modules

IInformation TTechnology

Presentation OutlinePresentation Outline

• Introducing IT Series

• 5100-28-IT

• 5100-02-IT

• IT as part of the control/monitoring system

Sierra Monitor – Industry LeaderSierra 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

Introducing ITIT SeriesIntroducing ITIT 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

IT Features and BenefitsIT 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

IT Series DisplayIT 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 LA p p l y z e r o g a s, e n t e r <SW2> w h e n d o n eC A L I B:C A L – 0 %1 0 0 % L E L

• Key 1 MODE

• Key 2 ENTER

• Key 3 UP (-)

• Key 4 DOWN (+)

IT Non-Intrusive Calibration and OperationIT 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

IT Series Data AccessIT 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

IT Transmitter Module IT Transmitter Module

Presentation OutlinePresentation Outline

• Introducing IT Series

• 5100-28-IT

• 5100-02-IT

• IT as part of the control/monitoring system

5100-28-IT IR Combustible Gas Module5100-28-IT IR Combustible Gas Module

• Model 5100-28-IT – Description

– Features

– IR Technology Benefits

– Principle of Operation

– List of Gases

5100-28-IT Description5100-28-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

• 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 Features5100-28-IT Key Selling Features

Infrared Technology BenefitsInfrared 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

5100-28-IT Principle of Operation5100-28-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

Rel

ati

ve

Inte

nsi

ty

Gases Absorbed by IR SpectraGases Absorbed by IR Spectra

Gas Response

Hexane

Hexanol

Naphthalene

Nonane

Octane

Octanol

Pentane

Pentanol

Propane

Propanol

Propylene

Styrene

Toluene

Xylene

Gas Response

Methane

Benzene

Butane

Butanol

Cyclobutane

Cyclohexane

Cycloheptane

Cyclopentane

Decane

Ethane

Ethanol

Ethyl Benzene

Heptane

Heptanol

Presentation OutlinePresentation Outline

• Introducing IT Series

• 5100-28-IT

• 5100-02-IT

• IT as part of the control/monitoring system

5100-02-IT Catalytic Bead Combustible Gas Module

5100-02-IT Catalytic Bead Combustible Gas Module

• Model 5100-02-IT – Description

– Features

– Catalytic Bead Technology Benefits

– Principle of Operation

– List of Gases

• 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 Description5100-02-IT Description

• 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 Features5100-02-IT Key Selling Features

Catalytic Bead Technology BenefitsCatalytic Bead Technology Benefits

• Proven technology

• Measures all combustible gases

• Lower costs

5100-02-IT Principle of Operation5100-02-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 Wheatstonebridge signal

Gases Detectable by 5100-02-ITGases Detectable by 5100-02-IT

Gas Response

Hydrazine

Hydrogen

JP-4 (Jet Fuel)

Methyl Acetate

Methanol

Methyl Chloride

Methylethylketone

Napthalene

Nonane

Octane

Pentane

Propane

Toluene

Xylene

Gas Response

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

Presentation OutlinePresentation Outline

• Introducing IT Series

• 5100-28-IT

• 5100-02-IT

• IT as part of the control/monitoring system

Key Features of IT SeriesKey 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

How IT is Part of Gas Sensing SolutionsHow 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

Sentry-Based Solution – Basic

Gas Detectors

Sentry Bus

& VDC

Distributed ControlSystem

IT Sensor Module Sentry Modbus DCS

Modbus RTU

Sentry-Based Solution - Commander

Gas Detectors

Sentry Bus

& VDC

Distributed ControlSystem

IT Sensor Module Sentry Commander Modbus DCS

Sentry Commander

Sentry Controllers

Modbus RTU

Sentry-Based Solution - FieldServer

Gas Detectors

Sentry Bus

& VDC

IT Sensor Module Sentry FieldServer Protocol DCS

Protocol matching customer’s needs

Sentry Controllers

FieldServerProtocol

Translator

PC based DCS

Modbus RTU

Ethernet-based Solution

Internet AccessModem

FieldServerw/ WebServer

Local PCw/

MS Explorer

BroadbandInternet

Gas Detectors

RS-485Modbus & VDCAC/DC Power Supply

and termination panel

AC Power

Ethernet Hub

Remote Monitoring PCw/ MS Explorer

IT Sensor Module FieldServer WebServer Internet

Sensor Module SolutionsSensor Module Solutions

• 4-20 mA Interface– IT Series

– 4101 Series

– 4100 Series

• Modbus RTU– IT Series

• Alarm Only– 20X/200X

– Hydrides/Ammonia

5100-02-IT Demonstrator5100-02-IT Demonstrator

• Compact complete demo– 4-20 mA output

– Alarm relays

– Control relays

– Modbus RTU

– Digital display

IT Series

A Sense of the Future