Xgard Bright Overview

Xgard Bright is a versatile platform offering flammable and toxic gas detection and oxygen monitoring, while providing ease of operation and reduced installation costs.

© 2018 Crowcon Detection Instruments. All rights reserved.

Fixed – Detector Range Overview

Capability

Mar

ket P

rice

Xgard & Xsafe

Xgard IR

Flamgard Plus

TXgard Plus / TXgard-IS+

Xgard Bright

Xgard IQ

IRmax

Range of Detector heads

Infra red Xgard

Flammable gas detector head with

display

Toxic & oxygen gas detector heads with

displayAddressable detector with

display

Intelligent detector and transmitter

Infrared Hydrocarbon

detector

Analogue 4-20mA

Non-intrusive / Display

& Relay Options

SIL certification.

Remote sensor / display


Xgard Bright

Xgard Bright is a versatile platform offering flammable and toxic gas detection and oxygen monitoring, while providing ease of operation and reduced installation costs.

Lowering the cost of installation, the 3-wire addressable implementation drastically reduces cabling requirements. The large OLED display allows users to easily work with Xgard Bright during install, calibration and routine maintenance without the need to open the housing.

One stop solution for flammable, toxic and Oxygen gas detection with additional OLED display window and

addressable capability.

CH4 O2 H2S COAvailable

gasesContact us for more gas /

sensor options

Key Features


• OLED display window - Instantly read gas level reading and current status. Supports & reduces time for maintenance routines.

• Non-intrusive configuration and calibration completed with magnetic key. (No front cover removal).

• Analogue 4-20mA and RS-485 Modbus signals as standard, Xgard Bright comes with an Alarm 1, Alarm 2, sounder and Fault relays as standard as well as optional HART communications.

• Certifications include gas and dust approvals for ATEX and IECEX

• Multiple sensor technology, gas type & range options. Now with world-first Molecular Property Spectrometer TM (MPS) sensor for maintenance free flammable gas detection

Key Features


MPS Sensor (Molecular Property Spectrometer)

Benefits:

• Immune to poisoning

• TrueLEL multi-gas accuracy

• Does not require in-field calibration

• No correction factors required

• Detects hydrogen and hydrocarbons

• 5+ year operating life

Housing with dust screen

Sensor PCB

CPU PCB

Interface PCB


MEMS (micro-electromechanical system) transducer with heated membrane measures thermodynamic

properties of the air/gas mixture.

Multiple measurements and environmental data are processed to create a thermal spectrum to

identify gases present.

Silicon based low-mass micro hot

plate as thin as a human hair

Able to rapidly heat and cool

MPS Sensor (Molecular Property Spectrometer)


MPS sensor features True LEL / Multi species gas

Challenges:Many industries and applications use or have as a by product multiple gases within the same environment. This can be challenging for traditional sensor technology which can detect only a single gas that they were calibrated for and can result in inaccurate reading and even false alarms which can halt process or production.

MPS Solution:The challenges faced in multi gas species environments can be frustrating and counter productive. The MPS sensor can accurately detect multiple gases at once and instantly identify gas type. The MPS sensor has a on board environmental compensation and does not require a correctional factor. Inaccurate readings and false alarms are a thing of the past.

• One factory calibration to Methane Delivers Accuracy Across 15 Common Flammable Gases Including Hydrogen.

• MPS only solution in the market with accurate reading across many flammable gases without correctional factors.

• Automated environmental compensation


MPS sensor features No poisoning Challenges:In certain environments traditional sensor types can be under risk of poisoning. Detectors in environments where poisons or inhibitors may be encountered, regular and frequent testing is the only way to ensure that performance is not being degraded.

MPS Solution:Sensor failure due to poisoning can be a frustrating and costly experience. The technology in the MPS sensor is not affected by contaminants in the environment. Processes that have contaminants now have access to a solution that operates reliably with fail safe design to alert operator to offer a peace of mind for personnel and assets located in hazardous environment.

• High H2S environments – H2S can temporarily reduce effectiveness (Digestors, sour oil fields, waste-water treatment)

• Hydrogen environments regularly suffer poisoning failures.

Real application poisoning feedback – Service engineers

Typical poisons are organic silicon compounds, organometallic compounds and organic phosphate esters. Pellistor sensors which are not designed to have some resistance to poisons (these are usually non-porous) can lose over 90% of their response to methane within a few minutes. Other poisoning environment are as below:


MPS sensor features Premium solution for Hydrogen detection

Challenges:The usage of Hydrogen in industrial processes is increasing as the focus to find a cleaner alternative to natural gas usage in this sector. Detection of Hydrogen is currently restricted to pellistor sensor technology due to Infra Red sensors inability to detect Hydrogen. When faced with challenges highlighted above in poisoning or false alarms, the current solution can leave operator with costly and regular servicing as well false alarm challenges.

MPS Solution:The MPS sensor provides a far better solution for Hydrogen detection. The challenges faced with traditional sensor technology are completely removed. A long life hydrogen sensor that does not require calibration throughout the life cycle of the sensor, without the risk of poisoning or false alarms can significantly save on total cost of ownership and reduces interaction with unit resulting in peace of mind and reduced risk for operators leveraging MPS technology.

Specification


SpecificationsSize 156 x 166 x 109mm (6.1 x 6.5 x 4.3inch)

Cable Entry2x M20 (stopping plug fitted to left-side entry)

Power 10-30Vdc. 3W max

Electrical Output4-20mA current sink or sourceRS-485 Modbus RTUHART (Optional)

Weight Aluminium alloy 1kg (2.2lbs)

Enclosure Material ADC 12 aluminium alloy

RelayAlarm 1, Alarm 2, FaultSPST contacts rated 1A 30Vdc

Sounder Out 24Vdc (nominally), 250mA maximum load

Operating Temperature-40°C to +70°C (-40°F to 158°F)Note: sensor operating temperatures vary widely.

Humidity 0 to 95% RH, non-condensing

Repeatability +/- 2% FSD

Zero drift +/- 2% FSD per year maximum

Ingress protection IP65


Xgard Bright – Sensor / gas releasesGas & ranges Sensor technology Ranges available

MPS Flammables MPS 0-100% LEL

Hydrogen Sulphide (H2S) Electrochemical10, 20, 25, 50, 100, 200

ppm

Oxygen (O2) Oxygen 0-25% vol

Carbon Monoxide (CO) Electrochemical0-25, 50, 100, 200, 250,

300, 1000, 2000 ppm

Methane (CH4) Pellistor 0-100% LEL

Pentane (C5H12) Pellistor 0-100% LEL

Hydrogen (H2) Pellistor 0-100% LEL

LPG Pellistor 0-100% LEL

Carbon Dioxide (CO2) Infra-Red 0-5% vol

Methane (CH4) Infra-Red 0-100% LEL

Propane (C3H8) Infra-Red 0-100% LEL

Butane (C4H10) Infra-Red 0-100% LEL

Pentane (C5H12) Infra-Red 0-100% LEL

LPG Infra-Red 0-100% LEL

VOC - Safe Area PID 0-1000 ppm

Ammonia (NH3) - Safe Area Electrochemical 0-50, 100 ppm

Chlorine (CL2) - Safe Area Electrochemical 0-5, 10 ppm

Ozone (O3) - Safe Area Electrochemical 0-1 ppm

Sulphur dioxide (SO2) - Safe Area Electrochemical 0-10 ppm

Other gas available on Xgard Bright platform on 12 week+ lead time:o NO2 : 0-50, 100ppmo NO : 0-25, 50, 100ppmo HCL : 0-10, 25ppmo HCN : 0-25ppmo HF : 0-10ppm

Contact Crowcon for any requirements outside this list of available gas / sensor options

Certification


Xgard Bright Certifications

Approvals

ATEX and IECExEx II 2 G Ex db IIC T6 GbEx tb IIIC T80ᶜ DbII 2 G Ex db IIC T6 GbII 2 D Ex tb IIIC T80ᶜ DbCertificate numbers:TUV 16 ATEX 7908 XIECEx TUR16.0035 X

EMC Compliance EN50270: 2015

Standards

EN60079-0 :2012 + A11:2013EN60079-1 :2014IEC60079-0 :2011 Edition 6IEC60079-1 :2014 Edition 7

Zones Certified for use in Zone 1 and Zone 2 areas

UL certification & Stainless steel enclosure options in progress.

Accessories


Flexible installation optionsSpray deflectors

For outdoor installations and sensor protection from water spray

Waterproof cap

For use in offshore or in very wet conditions

Flow adaptors

For use in sampling applications

Sun-shades Prevents against excessive heat build up due to direct sunlight

Calibration adaptors

Enables application of calibration gas to the sensor

Collector cone

Aids detection of lighter than air gases such as hydrogen or methane.

Magnetic wand

To access menu without removing cover

Industry and application


Pentane – Pellistor, Infrared or MPS

Storage areas

Pentane has been used in plant processing for many years during the refinement of C5 to C9 molecules in the ‘cracking’ process.

Also used as propellant pressurizing agent for consumer products:

• Paint & coatings• Household products • Automotive • Insecticide (Foam & insulation)

Large volume of pentane is stored in tank farms or in site storage areas where operators may be present.


Hydrogen - MPS

Battery roomsThe battery rooms are always under explosion risk as batteries release hydrogen during charging.

Hydrogen is a highly explosive gas and it is therefore important to take necessary steps or actions while working inside the battery room during maintenance.

During heavy recharge the concern is the ventilation system may not be exhausting build up of Hydrogen. A process improvement triggered by gas detection system could quickly react to dangerous levels of Hydrogen


LPG tank truck / Refinery loading stations

Truck-loading bays allow trucks to load their products for transfer to gasoline filling stations, homes, office buildings, etc. These facilities are located in every refinery, fuel storage terminal, and gasoline storage terminal.

The process of loading and unloading LPG gas comes with challenges with pressures which are effected by temperature.

Surges in pressure can cause issues with catastrophic leaks or valve blockages.

Because of the hazards associated with petroleum products, these areas must be monitored continuously. Seals and gaskets in these valves or pumps will, over prolonged exposure, invariably fail and provide the fuel that can come into contact with heated parts and an ignition source to develop into a fire.

Pentane – Pellistor, Infrared or MPS


Carbon Dioxide – InfraredBreweries

The primary areas of concern about CO2 in breweries are the fermentation and brite tanks. The massive amounts of gas housed in the vessels can easily overcome an average adult in seconds.

Duties such as cleaning fermentation tanks, maintaining yeast disposal, and working in walk-in coolers are normal, daily brewery activities yet all are the most hazardous confined spaces for employees in the breweries because these areas can confine the gas – in a space where it cannot escape.

Confined space is a concern for brewers is the walk-in cooler. Facilities with draft coolers already understand the hazard the walk-in cooler creates because it traps CO2 and does not allow it to escape except when the cooler door is opened. Fixed monitors in the cooler can warn employees of CO2 leaks prior to them entering the cooler.


Ammonia – Electrochemical

Industrial refrigeration

Industrial refrigeration applications are typically used in places like cold food storage, dairy processing, Beverage production, Ice rinks and heavy industry, these sorts of places. These are large scale cooling systems.

Ammonia is also cheap to produce and energy efficient to use. it has the capability to absorb large amounts of heat as it evaporates, it also means the pipes and components can be thinner and smaller.

On a large scale refrigeration process there are many potential leak hazards. Continuous monitoring is essential to protect operators from toxic characteristics.


Chlorine – ElectrochemicalSwimming pool / Jacuzzi additive

Chlorine is the chemical most often used to keep swimming pools and Jacuzzis free of bacteria that can be hazardous to humans.

While the bacteria-killing properties of chlorine are very useful, chlorine also has some side effects that can be very irritant.

Handling and storage of Chlorine used in keeping swimming pools bacteria free can be hazardous.

Pool chemicals may become a hazard when they become wet by a small quantity of water or when they are improperly mixed, such as with other chemicals or reactive materials.

Reports over the last five years still show a significant number of fires, toxic vapor releases, and personnel injuries in which pool chemicals were a factor


Sulphur Dioxide – ElectrochemicalPower plant / Cement manufacturing

Sulphur dioxide is one of the major air pollutants around the world.

Power plants emitting the most sulfur dioxide, but cement kilns produce approximately 20 percent of all sulphur dioxide industrial emissions.

SO2 is generated both from the sulphur compounds in the raw materials and from sulphur in fuel.

Many millions of pre-mature deaths worldwide may be linked to poor air quality.

Global tightening of regulations of air quality and SO2 in the environment are resulting in growing demand for solutions that monitor and reduce emissions.

How to Order


Ordering Matrix

Servicing


Functions can be accessed and navigated using 2 magnetic keys on face of detector head.• Scroll key• Enter key

Menu Navigation


Calibration - Zeroing


Calibration – 1 of 2


Calibration – 2 of 2


Spare Parts

General spares:

Summary


Key attributes and decision points

Addressable capability

• Drastically reduce cost of installation for multi-detector system set ups by leveraging the Xgard Bright addressable

functionality. Cable usage on a controller to detector ‘point to point’ system can be substantial. The functionality of the

Xgard Bright allows each detector within the system to be ‘daisy chained’ together reducing cable usage and reducing

total cost of installation.

Non-Intrusive maintenance & calibration

• Reducing time exposed to hazard environments is key to minimising risk. The Xgard Bright can be configured,

maintained & calibrated without the need to remove any covers. Menus can be reached by simply applying magnetic

wand to display window to scroll and accept actions. Operators will be able to complete tasks efficiently and decrease

risk.

Communication & connectivity• As standard analogue 4-20mA & MODBUS RS-485 output signals with optional HART interface. Relays are also fitted

for activating local alarms or sending digital signals to control systems.

• MODBUS RS-485 communication allows information to be shared between controller and detector. It can share

information remotely which removes the need for operator to enter potentially hazardous environments.

• Hart communication provides digital communications superimposed on the standard analogue output. HART permits

access to device configuration, diagnostics, as well as maintenance and alarm records. As a result, a whole host of

additional information related to plant operation is available to the control room through HART.

Xgard Bright Overview

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Transcript of Xgard Bright Overview