Car Parking CO Gas Monitoring and Fan Control Systems

When it comes to Carbon Monoxide Detection in Car Parking CO Gas Monitoring and fan control Systems, Our  European Standard  MSR CO GAS-CO-300-D Sensor Transmitter has great demands in the global market.

Now available with a special  promotional discounted price for the Indian market with the following details :

Ideal for :
Parking area, garages, chiller rooms, and heating, as well as dusty & humid area like pharmaceuticals, coal mine, conveyor belt, cement plant, thermal power plants, flour mills,
powder industries.

Key Points:- 

• Carbon Monoxide with enhanced CO radical detection capability
• Very early smoldering fire and smoke detection.
• VEFSA system (very early fire and smoke alarm)

SPECIFICATIONS:- 

• Sensor Model Available in Stock: – GAS-CO-300-D
• Measuring Gas: Carbon Monoxide, Enhanced CO + radicals Detection.
•  Sensor element (cell):- Electrochemical Diffusion, Electrolyte type Gel-based (no leak, no membrane rapture, no orientation problem & no false alarm)
•  Measuring Range: – 0-300 ppm (Standard)
• Connection: – Two and Three-wire sensor
• Response time T90:-  ≤ 30 Sec
• Warm-up time (First Time):- ≤ 3 Min.
• Protection Class Available in: IP65 (Flameproof and weatherproof )
• Stability & resolution: – ± 3 ppm
• Sensor life expectancy:- ≥ 6 years (Site Feedback ≥ 12 Years  )
• Calibration Interval: 1 Year.
• Sensor Coverage Area: – 700 m² to 935m², ideal condition.
• Humidity non-condensing : 15-90% RH
• Working temperature:–10°C to 50°C
• Power supply:-  18 – 28 VDC ( Overload protected)
• Analog output signal:- Standard: 4-20 mA Linear Output, also available in 2-10VDC
• Flammability: – UL 94: V2
• Warranty: 12 Month only on manufacturing defects
• Guidelines Approval:  CE/ UL Enclosure.

Online Gas Monitoring System For Hospital And Hotel Application

ALVI Automation (India) Pvt Ltd in association with ALVI Technologies Pty Ltd  presents to you Online Gas Monitoring System For Hospital  And Hotel Application: 

1. For LPG/PNG/CNG/LNG pipeline system, Gas cylinder storeroom, and kitchen application: 
   1. Aim: To identify potential gas leaks from pipeline or gas cylinder
   2. Solution: By installing LPG/PNG/CNG gas sensor transmitter along with control and monitoring system and using set points as per global standards to generate an audio-visual alarm and BMS connectivity             
2. For control of VFD drive via starter panel of AHU or exhaust fan which Aspirates the air from the kitchen chimney
   1. Aim: To avoid unnecessary usage of electricity and power and operate the air ventilation system only when a high density of smoke is created which are exhausted by varying the speed of the fan
   2. Solution: By installing CO, VEFSA (Very early fire and smoke alarm) gas sensor transmitter along with control and monitoring system and using set points as per global standards (TWA and STEL limits )                 
3. For Battery/UPS/Server room
   1. Aim: To avoid any leak of hydrogen gas from the batteries that might create an explosive atmosphere when it reached 4% of its vol in air
   2. Solution: By installing MSR H2 gas sensor transmitter along with control and monitoring system and using set points as per global standards (TWA and STEL limits )             
4. For car park ventilation and basement application:
   1. Aim: To avoid the unnecessary running of exhaust fan, Jet air fan and fresh air fan 24*7 and for human safety and asset protection
   2. Solution:  By installing CO gas sensor transmitter along with control and monitoring system with integration facility with a fire alarm system and using set points as per global standards (TWA and STEL limits )
5. For STP (Sewage Treatment Plant)
   1. Hydrogen Sulfide and Ammonia are two main parameters restricted by regulations hence continuous monitoring in very essential as the concentration of H2S found in the exhaust air of Sewage Treatment Plant is in the range of 5 – 15 ppm and the emission level for ammonia is typical in the range of 50 to 150 ppm which needs to controlled and detected for human safety
   2. Odor vapor control using VOC(volatile organic component) sensor transmitter
   3. Gas rick area like CH4(Highly explosive), O2 (depletion due to organic CO2) control and monitoring
6. For online monitoring and control of Indoor Air Quality (IAQ).
   1. Aim: To control and monitoring the indoor air quality inside office premises, Malls, Meeting rooms, theaters, etc.
   2. Solution: by installing CO2, O2, PM2.5, VOC (volatile organic component) gas sensor for continuous monitoring and automatic controlling of centralized AHU to pump in more fresh air whenever necessary to avoid increase of breathing rate drowsiness, pulse rate, headache, dizziness and also helps in energy conservation by avoiding the AHU run in full speed 24×7     
7. For monitoring and control of Differential air pressure
   1. Aim: As per WHO (World Health Organisation) Building, hospital industries need to maintain positive pressure between the process area and outside surroundings. This positive pressure needs to be maintained to ensure no toxins or dust enters the operation or processing or habitable areas to prevent cross contaminants, Damper control and choking of air filters
   2. Solution: by installing Differential pressure transmitter in Ducts along with remote monitors for online continuous monitoring and alarm generation  

For more information please feel free to contact us:

 

Combustible/Explosive Gas Leak Detector

Everyday we come across the news of hazardous fire incident take place in commercial sector i.e in Industries, Hotels, Restaurants, Gas Agencies, Gas Bank, Battery Room, Oil and Gas Industries and this horrible  incident takes place due to the leakage of combustible/Explosive gas (LPG,PNG,CNG, Hydrogen, Methane, Hydrocarbon etc..) leakage to stop this type of horrible panic incident we need to use/ install Combustible/Explosive  Gas leak detector in our premises  which inform us about the incident before simple leakage change into uncontrollable hazardous incident .

MSR gas leak detector series is highly robust, industrial grade, flameproof or explosion proof Combustible/Explosive gas detector transmitter

The detector is used for online, continuous monitoring of the flammable Gas present in  %LEL or %Vol terms in ambient air or in duct or pipeline. It is ATEX, IECEX, PESO certified with SIL 2 safety integrity level for hazardous area installation Zone 1 and 2.

It also offers optional features like inbuilt LCD display, flashing alarm LEDs, onboard potential free relay contacts (24VDC @ 1 A), RS485 serial interface with Modbus RTU communication.Technical Specifications:

• Measuring Parameters: LEL level or leakage detection – Hydrogen, Methane, CNG, PNG, LPG, Natural gas
• Sensor Technology: Catalytic bead-based pellistor sensor cell
• Measuring range: 0 ~ 100 % LEL
• Response time (t90): < 10 sec
• Control unit: 12-bit microprocessor based
• Auto zero point tracking for drift compensation
• Power supply: 24 VDC
• Ingress protection: IP65, IP 66, IP68
• Enclosure: Stainless steel (for sensor cell), anti-static epoxy coated metal alloy (for transmitter), polycarbonate
• Output: linear, proportional 4-20mA
• Mounting: wall, duct, pipeline
• Safety integrity level: SIL 2
• Optional: LCD Display, alarm LEDs, potential free relay contacts
• Hazardous area: Zone 1, 2
• Commercial areas: Kitchen, store room, pine line

Application:

• Restaurants, Hotels, Home Kitchen
• Coal mines, underground mines
• Oil & gas, refinery
• Fertilizer industry
• LPG/PNG/city gas distribution system
• PNG / LNG automobile gas filling stations
• Landfill Gases
• Sewage treatment plants (STP), effluent treatment facility
• Cryogenic application
• Chemical, petrochemical industry
• Food processing industry
• Furnace, burner application
• Gas reticulation system

For more details please drop us a  mail at info@alviautomation.com or contact us

ATEX, IECEX, SIL2, PESO Certified Hydrogen Gas Detector online LEL monitor for Zone1

Hydrogen sensor transmitter for online, continuous LEL or flammability detection in battery rooms, UPS rooms, cracking plants, hydrogenation plants, hydrogen gas bank etc. The detector is explosion proof ATEX, IECEX certified with SIL 2 safety level and suitable for installation in hazardous area Zone 1 and Zone 2.

It is available with LCD Display, onboard relay contacts, flashing alarm LEDs, auto diagnostic watch dog, non-intrusive calibration, with industry standard linear analog output.

Hydrogen sensor transmitter / detector – explosion proof, ATEX, Zone 1

online, continuous monitoring of hydrogen LEL or flammability level, wall or duct mount, with / without display & relays, ATEX certified with safety integrity level SIL 2, explosion proof for Zone 1, 2

Model no: PX2-X-X-3440-XX 

Hydrogen gas detector, PX2 series is highly robust, industrial grade, flameproof or explosion proof gas detector for hydrogen LEL or flammability monitoring. It is used for online, continuous monitoring of hydrogen flammable concentration in %LEL or %Vol terms in ambient air or in duct or pipeline. It is ATEX Ex’d’ and Ex’n’ certified with SIL 2 safety integrity level for hazardous area installation Zone 1 and 2.

The sensor transmitter offers linear, proportional analog output in industry standard current signals, over measuring range of 0 ~ 100 % LEL (lower explosive limit). The detector works on highly sensitive catalytic bead based pellistor sensor cell, with low response time. It has unique feature of auto diagnostic watch dog with zero point tracking feature. Due to its 12-bit microprocessor based control unit, it offer high accuracy over long term. The detector is also equipped with sintered filter with flashback arrestor for enhanced safety

 

Hydrogen sensor transmitter – LEL detector, ATEX Zone 1,2 flameproof, with / without display

It also offers optional features like inbuilt LCD display, flashing alarm LEDs, onboard potential free relay contacts (24VDC @ 1 A), RS485 serial interface with Modbus RTU communication.

Key Features:

• Catalytic bead based Pellistor sensor cell with low flash energy
• 12-bit microprocessor control unit
• Non-intrusive one man calibration via hall effect switches
• ATEX, PESO, IEXEC, SIL2 certified explosion proof / flameproof, suitable for Zone 1, 2 gas explosion installation
• Linear, proportional analog industry standard current output
• Continuous system self-diagnosis with watch dog
• Flashback arrestor with sintered filter
• Auto Zero point tracking to zero point compensation
• SIL 2 HW TUV certified
• RS485 serial interface with Modbus RTU communication (optional)
• 2 relay output module (optional)
• System and alarm LED indicators (optional)
• Modbus RTU communication over RS485 serial interface

Technical Specifications:

• Measuring Parameters: hydrogen gas flammability or leakage
• Sensor Technology: Catalytic bead based pellistor sensor cell
• Measuring range: 0 ~ 100 % LEL ( 0 ~ 4% v/v @ STP)
• Response time (t90): < 20 sec
• Control unit: 12 bit microprocessor based
• Auto zero point tracking for drift compensation
• Power supply: 24 VDC
• Ingress protection: IP66
• Enclosure: Stainless steel (for sensor cell), anti-static epoxy coated metal alloy (for transmitter)
• Output: linear, proportional 4-20mA
• Mounting: wall, duct, pipeline
• Safety integrity level: SIL 2
• ATEX marking: CE 722 Ex II 2G EEx d IIC T6, CE 722 Ex II 3G EEx nA IIC T6
• Optional: LCD Display, alarm LEDs, potential free relay contacts
• Hazardous area: Zone 1, 2

Application:

• Oil & Gas, Petrochemical, refinery
• Battery rooms, UPS facility
• Mobile switching center (MSC) of cellular / telecom site
• Cracking plants
• Hydrogenation plants
• Chemicals
• Cold stores
• Pharmaceuticals, medicinal formulation

For more Information please contact us or mail us info@alviautomation.com 

Carbon monoxide monitoring & control system for parking ventilation

 Carbon monoxide and Very early smoke & fire sensor (VEFSA) transmitter

(Better monitor CO and CO+ which will solve the purpose of fire & Smoke monitoring as well as CO monitoring)

specifications:

• Should be capable of detection, measurement and monitoring of carbon monoxide and Carbon monoxide gas radicals
• Should have Electro-chemical type sensor cell
• Should have Gel based Electrolyte in the sensor cell
• Should have 0-300ppm measuring range, taking care over-rangenge detection.
• Should have high accuracy, high repeatability , high reliability
• Should have a coverage area of 700-750 m2
• Should a be 2-wire loop powered connection for power supply and signal output.
• Should analog output: 4-20mA (standard), 2-10V (3-wire loop) (optional)
• Should have linear, proportional
• Should have low response time: T₉₀ < 50 sec
• Should have accuracy of ≤ 3% of measuring range.
• Should have low warm up time, ≤ 3 mins
• Should have Low voltage operation: 24V AC / DC
• Should have low power consumption: 22 mA, max. (0.6 VA)
• Should not be cross-sensitive to gases like SO2, acetone, ammonia, Carbon dioxide, Nitrogen dioxide, Nitric oxide.
• Should be wall mountable without need of further mounting brackets etc.
• Should have plug-in, easy replaceable sensor cell (simple push – pull arrangement) and PCB for easy service and replacement (no need to change the whole unit)
• Should have auto recovery to zero point
• Should have life expectancy of > 5 years, replaceable sensor cell
• Should capable of mounting in any direction, with no effect on performance, output and life of these sensors (no orientation problems)
• Should have poisoning protection, against background gases, lead vapours, dust etc
• Should have overflooding protection
• Should have reverse polarity and short circuit protection
• Should have manual trimpot calibration facility, with annual calibration frequency
• Should capable for field calibration
• Should have atleast IP44 protected housing, with the provision of dust and moisture protection with hydrophobic filter arrangement.
• Should have fast response time
• Should have IMMUNITY TO RF/FM INTERFERENCE as per the guidelines of EMC- Directive 2004/ 108/ EEC, CE
• Should have enclosure flammability in accordance to UL 94: VO

Central monitoring cum control system:

• Should be based on PLC or microprocessor based system with pre-defined logic retention capacity.
• Should have LCD or LED Display
• Should be able to expand analog input channel with help of slave or expansion module. No need to replace or change whole monitoring system
• should have free configurable set points at every channel input
• Should have facility to temporary disable any channel with key press or control device, for maintenance mode etc.
• Should have sufficient potential free (230VAC, 5A) relays. Should able to expand number of relays with help of slave / expansion modules.
• Relays should be capable of soft program, with one-to-one, one-to-many, many-to-one configuration with any channel set-points.
• Should be provided with contactor arrangement for operation, protection of exhaust fans, etc
• Should have overload protection arrangement
• Should have fault LED
• Auto-diagnostic watchdog with built in error code, fault LED indication informing about the type of system error/fault
• Should have password for protection against any un-authorised system access.
• Simple English Menu driven (system error, status alarm, status relay, MP parameter etc)
• Configurable relay parameters: energized, de-energized, latching, non-latching
• Should have provision / option for BMS integration via digital network.

Control & warning logic: 

CO concentration	Action
0-35 ppm	No action. Display readout
>35ppm	Start fresh air & exhaust system (to reduce gas concentration) (lower speed)
> 60ppm	Start fresh air & exhaust system (higher speed)

 

Control & warning logic: (with CO and CO+ monitoring for CO, fire and smoke )

CO concentration	Action
0-35 ppm	No action. Display readout
>35ppm	Start fresh air & exhaust system (to reduce gas concentration) (lower speed)
> 60ppm	Start fresh air & exhaust system (higher speed)
>200ppm	Send signals to fire alarm system and stop fresh air system

Click here to download CO, Co+ datasheet

Click here to download controller datasheet

For more details pleae feel free to contact us  or visit www.alviautomation.com 

Oxygen (O2) Gas Detector

Oxygen (O2) gas detectors are used for or the detection of oxygen in rooms where changes of the oxygen concentration are possible, such as laboratories, hospitals and food process industries etc.

Alarm limits for decreasing concentration of gas is set to 18-19% Vol.

Other reasons why oxygen levels can fall are among others:

• Combustion of something which consumes oxygen
• Corrosion of something that reduces the oxygen concentration
• Oxygen consumption due to breathing in dense areas.

Problems usually arise in confined spaces such as tanks, tunnels, etc.

Oil- and gas industry

The normally closed spaces like tanks, containers, pontoons, etc..
corrosion may have contributed to making oxygen levels drop to low values.

A worker entering such an area may die immediately.

Therefore, it is important to first check the oxygen concentration in the compartment. In some cases, other gases may be present, both toxic and explosive. Therefore it may be necessary to use a portable instrument or VOC Gas type online monitoring sensor transmitter that measures several gases at the same time.

Before stepping into, for example, a tank you should check the oxygen concentration in the tank with a portable gas detector or VOC gas detector. Continue reading “Oxygen (O2) Gas Detector”

Methane (CH4) Gas Detector

Methane Gas Detector – LEL sensor transmitter, flameproof IECEX, ATEX, SIL 2, Zone 1/2

Description: 

• Metane (natural gas, Methane, LNG, PNG) sensor transmitter for online, continuous LEL / flammability or leakage detection in ambient air or ducts.
• The detector is explosion proof IECEX, ATEX certified with SIL 2 safety level and suitable for installation in hazardous area Zone 1 and Zone 2.
• The instrument can be installed at landfill application, sewage treatment plants, fertilizer industry, gas bank etc.
• It is available with LCD Display, onboard relay contacts, flashing alarm LEDs, auto diagnostic watchdog, non-intrusive calibration, with the industry standard linear analog output.

online, continuous monitoring of methane / natural gas / PNG / LNG leakage or LEL level, wall or duct mount, with / without display & relays, ATEX certified with safety integrity level SIL 2, explosion proof for Zone 1, 2

Model: PX2-2-X-P3400-A

Methane, chemically known as CH₄ is highly flammable, lightweight gas with LEL at STP 5% v/v.

Methane gas detector series is highly robust, industrial grade, flameproof or explosion proof gas detector for methane leakage detection or LEL monitoring. Methane is also available in form as natural gas, pressurised natural gas (PNG), liquiefied natural gas (LNG).

The detector is used for online, continuous monitoring of the flammable concentration of methane in PPM, %LEL or %Vol terms in ambient air or in duct or pipeline. It is ATEX, IECEX certified with SIL 2 safety integrity level for hazardous area installation Zone 1 and 2.

The sensor transmitter offers linear, proportional analog output in industry standard current signals, over measuring range of 0-1000, 0-2000 PPM,     0 ~ 100 % LEL (lower explosive limit). The detector works on highly sensitive catalytic bead-based pellistor sensor cell, with low response time. It has unique feature of auto diagnostic watch dog with zero point tracking feature. Due to its 12-bit microprocessor based control unit, it offer high accuracy over long term. The detector is also equipped with sintered filter with flashback arrestor for enhanced safety.

It also offers optional features like inbuilt LCD display, flashing alarm LEDs, onboard potential free relay contacts (24VDC @ 1 A), RS485 serial interface with Modbus RTU communication.

Key Features:

• Catalytic bead based Pellistor, Electrochemical sensor cell with low flash energy
• 12-bit microprocessor control unit
• Non-intrusive one man calibration via hall effect switches
• ATEX certified explosion proof / flameproof, suitable for Zone 1, 2 gas explosion installation
• Linear, proportional analog industry standard current output
• Continuous system self-diagnosis with watch dog
• Flashback arrestor with sintered filter
• Auto Zero point tracking to zero point compensation
• SIL 2 HW TUV certified
• RS485 serial interface with Modbus RTU communication (optional)
• 1 or 3 relay output module (optional)
• System and alarm LED indicators (optional)
• Modbus RTU communication over RS485 serial interface

Methane sensor transmitter – hazardous area Zone 1, 2 with ATEX certified, flameproof

Technical Specifications:

• Measuring Parameters: LEL level or leakage detection – methane, LNG, PNG, natural gas
• Sensor Technology: Catalytic bead based pellistor sensor cell
• Measuring range: 0 ~ 100 % LEL ( 0 ~ 5% v/v @ STP)
• Response time (t90): < 30 sec
• Control unit: 10 bit microprocessor based
• Warm up time: < 5 mins
• Auto zero point tracking for drift compensation
• Power supply: 24 VDC
• Ingress protection: IP65
• Enclosure: Stainless steel (for sensor cell), anti-static epoxy coated metal alloy (for transmitter)
• Output: linear, proportional 4-20mA
• Mounting: wall, duct, pipeline
• Safety integrity level: SIL 2
• Optional: LCD Display, alarm LEDs, potential free relay contacts
• Hazardous area: Zone 1, 2

Application:

• Coal mines, underground mines
• Oil & gas, refinery
• Fertilizer industry
• PNG/city gas distribution system
• PNG / LNG automobile gas filling stations
• Landfill Gases
• Sewage treatment plants (STP), effluent treatment facility
• Cryogenic application
• Chemical, petrochemical industry
• Food processing industry
• Furnace, burner application
• Gas reticulation system

For more details please drop us a  mail at info@alviautomation.com or contact us

You can also visit our new online product portal for various commercial and industrial application www.alviautomation.in

Early Fire Monitoring for Coal Stockpile / Coal Conveyor Belt Entries

CO – Spontaneous Combustion of Coal Fire Monitoring :- COAL BASED POWER PLANTS (coal handling, coal processing):

Background:
Coal based power stations are facing increased expenditure for the green house gas saving programmes and increased liability insurance premiums for fires/explosions. Each year millions of Dollars are wasted in coal handling plant fires / explosions in coal stock piles, coal conveyor belts. Further coal based power plants are facing growing need to increase productivity. While power stations do install outdated devices like temperature or smoke sensors for fire detection, but by the time smoke is generated and detected – it is already too late. It is now time for the power plant engineers to address the early fire detection issues by employing latest technologies in CO and CH4 monitoring for very early fire detection and explosion prevention.
More and more power plants, coal handling plants and coal preparation plants today are using carbon monoxide products of combustion / spontaneous combustion of coal sensors to detect very early smouldering fires or hot spots and methane detection to prevent explosions.
.Coal Fires in Power Plants:
Coal processing or coal handling plants suffer from fire risks due to spontaneous combustion of coal fires (self ignition) and conveyor belt fires (hot burning coal, over-heating due to damaged bearings, roller, belt slip etc)
Benefits of CO Monitoring:
The very early sign in coal handling/processing plant fire is liberation of gas radicals (CO predominant). The idea is to detect the presence of this CO gas radical for very early fire prevention. By the time smoke is generated and detected it is already too late. A typical CO monitoring system for detection of products of combustion fires or spontaneous combustion of coal fires can warn potential fire two days in advance then flame is present or detected. By installing an effective CO and CH4 monitoring system, coal based power stations can benefit in the following ways:

• Reduced insurance premiums
• Better safety to plant and personals
• Reduced down time
• Prevention of loss of resources
• Save time and money.

Why CO monitoring? :
Coal contains moisture which when liberated, coal gets oxidised, generating both heat and carbon monoxide. This heat when builds-up has the potential of creating spontaneous combustion of coal fires.
Coal is extremely friable and can be easily crumbled or pulverised. Further coal also generates coal dust needing extra preventive measures like proper maintenance of stockpiles, guarding against accumulations of coal in the fuel-handling system, compaction of stockpiles, cleaning spills and washing float dust. The most effective programme for fire-prevention would be to have Carbon Monoxide Monitoring and Control System
CO Monitoring Installation Aspects:
There will always be some safe background CO levels in coal handling or processing plants under normal operating conditions. These CO levels will rise during coal loading, handling and will again settle to normal levels once loading is finished and ventilation fans are running. It is important to find out the normal background CO levels by installing CO data-loggers and observing the CO generation trends under normal operating conditions of the plant. A typical CO level of 50 ppm of CO is normally present in background levels when coal is being handled, moved or transported. Based on these normal background CO levels the sizing/selection of the CO system (range etc) and alarm set points need to be undertaken.

Location of Sensors:
In general, it is wise practice to locate an adequate number of sensors at strategic locations based on knowledge of the potentials for ignition. When considering belt fires, sensors should be located in close proximity to drives, tail pieces, and main rollers.
When coal is the issue, any location where accumulation of coal dust or bulk quantities is likely or expected should be considered. These include belt transfers, crushers, dust collection systems, and storage bins (silos, bunkers, etc.).
System Approach:
A typical system may consist of number of CO (range: 0-300, 500 or upto 1000 ppm) and or CH4 (range: 0-100% LEL) gas sensor/transmitters installed remotely at strategic potentially risky areas. The 4-20 mA output coming from these sensor/transmitters can be connected to a multi-channel gas controller which can handle from 2 to upto 96 remote sensor/transmitters. When CO concentration levels rise beyond the set limit (say above 100 ppm, depending on safe background levels), the built in relay contacts will automatically generate audio-visual alarm for plant supervisor to take corrective measure (ventilation fans, mains shut-off etc).

Fore more details Please read our article on CO Monitoring By Mr. Alak Jha  : Articles-COearlyFire-CoalPowerPlants

Hydrogen Gas Detectors (German Quality)

Hydrogen sensor transmitter for online, continuous LEL or flammability detection in battery rooms, UPS rooms, cracking plants, hydrogenation plants, hydrogen gas bank etc. The detector is explosion proof ATEX, IECEX certified with SIL 2 safety level and suitable for installation in  Indoor, Outdoor and hazardous area Zone 1 and Zone 2.

It is available with LCD Display, onboard relay contacts, flashing alarm LEDs, auto diagnostic watch dog, non-intrusive calibration, with industry standard linear analog output.

online, continuous monitoring of hydrogen LEL or flammability level, wall or duct mount, with/without display & relays, ATEX, IECEX certified with safety integrity level SIL 2, Indoor, Outdoor and explosion proof for Zone 1, 2

Model: MA, MC2, SC2 and PX2 Series

  

Hydrogen gas detector series is highly robust, industrial grade,non-flameproof, flameproof, or explosion proof gas detector for hydrogen LEL or flammability monitoring. It is used for online, continuous monitoring of hydrogen flammable concentration in %LEL  terms in ambient air or in duct or pipeline. It is ATEX EEx’d’ certified with SIL 2 safety integrity level for hazardous area installation Zone 1 and 2.

The sensor transmitter offers linear, proportional analog output in industry standard current signals, over measuring range of 0 ~ 100 % LEL (lower explosive limit). The detector works on highly sensitive catalytic bead based pellistor sensor cell, with low response time. It has unique feature of auto diagnostic watch dog with zero point tracking feature.

Due to its 12-bit microprocessor based control unit, it offer high accuracy over long term. The detector is also equipped with sintered filter with flashback arrestor for enhanced safety.

It also offers optional features like inbuilt LCD display, flashing alarm LEDs, onboard potential free relay contacts (24VDC @ 1 A), RS485 serial interface with Modbus RTU communication.

Key Features:

• Catalytic bead based Pellistor sensor cell with low flash energy
• 12-bit microprocessor control unit
• Non-intrusive one man calibration via hall effect switches
• ATEX certified explosion proof / flameproof, suitable for Zone 1, 2 gas explosion installation
• Linear, proportional analog industry standard current output
• Continuous system self-diagnosis with watch dog
• Flashback arrestor with sintered filter
• Auto Zero point tracking to zero point compensation
• SIL 2 TUV certified,IECEX, SIL 2
• RS485 serial interface with Modbus RTU communication (optional)
• 1 or 3 relay output module (optional)
• System and alarm LED indicators (optional)
• Modbus RTU communication over RS485 serial interface

Technical Specifications:

• Measuring Parameters: hydrogen gas flammability or leakage
• Sensor Technology: Catalytic bead based pellistor sensor cell
• Measuring range: 0 ~ 100 % LEL
• Response time (t90): < 10 sec
• Control unit: 12 bit microprocessor based
• Warm up time: < 5 mins
• Auto zero point tracking for drift compensation
• Power supply: 24 VDC
• Ingress protection: IP44, IP 54, IP 65, IP 66
• Enclosure: Stainless steel (for sensor cell), Cast Aluminium (for transmitter), polycarbonate material
• Output: linear, proportional 4-20mA or 2-10Vdc
• Mounting: wall, duct, pipeline
• Safety integrity level: SIL 2
• Optional: LCD Display, alarm LEDs, potential free relay contacts
• Hazardous area: Zone 1, 2

Application:

• Oil & Gas, Petrochemical, refinery
• Battery rooms, UPS facility
• Mobile switching center (MSC) of cellular / telecom site
• Cracking plants
• Hydrogenation plants
• Chemicals
• Cold stores
• Pharmaceuticals, medicinal formulation

For more details please feel free to contact us

Gas Detector Cartridge For Combustible/Flammable Gases Along With RS 485 Interface Sensor Board

ALVI Automation also trading as GasAlarm brings to you a revolutionary product in the field of Flammable/Combustible Gas Detectors.

Sensor Cartridge SC2 for combustible gases

Exchangeable sensor including digital value processing, temperature compensation and self-control for the continuous monitoring of the ambient air.

APPLICATION:

The PolyGard®2 Sensor Cartridge is used for the detection of combustible gases in non-Ex zones.

FEATURES:

• Digital measurement value processing incl. temperature compensation
• Internal functional control with integrated Hardware Watchdog
•  Data / measured values in μC Sensor Cartridge, therefore simple exchange of SC uncalibrated <> calibrated
•  High accuracy, selectivity and reliability
•  Low zero point drift
•  Sensor with long life expectancy
•  Hardware & software according to SIL2 compliant development process
•  Modular technology (plug-in and replaceable)
•  Easy maintenance and calibration by exchange of the sensor cartridge or by comfortable on-site calibration
•  Reverse polarity protected, overload and short-circuit proof
•  IP 65 version
•  Conformity to
  o EN 50271
  o EN 61010-1
  o ANSI/UL 61010 1
  o CAN/CSA-C22.2 Nr. 61010-1

 

Sensor Board SB2

Sensor board with RS 485 interface for integration of the Sensor Cartridges SC2.

 For More Details please feel free to contact us 

MSR Electronic GmbH

MSR-Electronic offers stationary gas warning systems for reliable monitoring, leakage detection and analysis: sensors, controllers and warning devices.

Whether for compliance with the MAK values or for leakage monitoring, the MSR-Electronic gas warning systems detect continuously and reliably harmful gases. The products and solutions are found in many applications such as parking garages, refrigeration, biogas plants or shipping.

When you choose MSR-Electronic’s secure solutions and innovative products, you benefit from many advantages, such as quality and availability, competitiveness, and openness to meet your individual requirements.

For more details contact us

 

 

Carbon Dioxide (CO2) Sensor / Transmitter / Analyzer / Monitoring – 20000ppm and 0-5% Vol

GasAlarm | ALVI Automation (India) Pvt Ltd (www.alviautomation.com) introduces the all new carbon dioxide (Co2) sensor / Transmitter / Analyzer / Monitoring for competitive Indian Market

Focused on qualitative products and consumer satisfaction with the support of our expert professionals MSR Germany, we are associated with System Integration, exporting and supplying a comprehensive variety of Carbon Dioxide (CO2) Sensor / Transmitter – 20000ppm, 0-5% Vol from Jaipur, Rajasthan, India.

MSR MC2 series CO2 offers industry standard analog (voltage or current) output, suitable for integration with any process signal controller / PLC system or SCADA.

MSR MC2 series CO2 is housed in a polycarbonate UL-V2 certified flame retardant enclosure with IP65 ingress protection. This enables only gas sample to pass through to sensor cell, but no dust and moisture, hence offering long sensor life and high accuracy.

Key Features:

1. Continuous, online monitoring

2. No cross-sensitivity due to background gases

3. No effects of humidity, moisture, temperature, radiation, vibrations etc

4. BMS, PLC integrateable

5. Suitable for any application

6. Long expected life Key Specifications:

7. Measuring range: 0~20, 000 ppm or 0~2% Vol/0-50%

8. Sensor technology: non-dispersive infra-red

9. sensor cell, Gold plated, dual beam

10. Output: linear, proportional analog (4-20mA, 2-10V) standard

11. Optional: RS485 Modbus RTU serial interface using SB2, MSB2 sensor board

12. Operating temperature: 0°C to +50°C

13. Low voltage operation 24V DC

Applications areas:

1. Cold storage like potatoes, apple, mango, kiwi, banana, etc

2. Controlled atmosphere chamber for kiwi, apples

3. Furnace, heated conveyor belts

4. Incinerators, manufacturing units

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Air Quality Monitoring For Indoor and Outdoor Purpose

ALVI Automation (India) Pvt Ltd in association with ALVI Technologies Pty Ltd takes pride in introducing cutting edge MSR Germany gas detectors for Air Quality Monitoring for Indoor and Outdoor Purpose.

The air pollution caused by exhaust gases from automobiles has become a critical issue. In some regions, fossil fuel combustion is a problem as well. The principal gases that cause air pollution from automobiles are nitrogen oxides, NOx (NO and NO2), and carbon monoxide (CO). Because NOx gases with sulfur oxides (SOx) emitted from coal-fired plants cause acid rain and global warming and produce ozone (O3) that leads to serious metropolitan smog from photochemical reaction, they must be detected and reduced

In addition, as greater amounts of oil organic compounds are currently being produced by applied construction materials and households, the number of people who develop various symptoms after moving into a new apartment (e.g., tickle, vertigo, headache, skin trouble) is
increasing. The principal gases that cause this phenomenon (called “sick-building syndrome”) are formaldehyde (HCHO) and volatile organic compounds (VOCs). Especially, formaldehyde is the most dangerous among indoor pollutants as it could harm all kinds of organisms. Considering these, the allowed concentration of formaldehyde in the
Netherlands and Germany are only 0.1 ppm. Therefore, gas sensors with excellent reactivity and stability are needed. therefore the necessity of MSR Detectors in a must for all Indoor and outdoor applications which includes gases like : CO, CO2, NOx, SOx, VOC, O3, VOC, CH4, NH3, CH2O, O2 etc.

Description : 

• Digital measurement value processing incl. temperature compensation
• Internal function control with integrated hardware watchdog
•  Data / measured values in μC of the sensor unit, therefore simple exchange uncalibrated <> calibrated
• High accuracy, selectivity and reliability
• Low zero point drift
• Long sensor life time
• Hardware & software according to SIL2 compliant development proces
• Easy maintenance and calibration by exchange of the sensor unit or by comfortable on-site calibration
•  4 – 20 mA (or 2 – 10 V) analog output with selectable signal output for special mode, fault etc.
•  Reverse polarity protected, overload and short-circuit proof
•  Housing for integration of the sensor unit
•  IP 65 version
• The sensor transmitter is housed in a Rugged enclosure (A housing or D housing) which can withstand Dust, Water splash, vibration knocks. It can withstand Harshest outdoor installation requirement including Mining, Defense and Marins applications.
• Conformity to

o EN 50271
o EN 61010-1
o ANSI/UL 61010 1
o CAN/CSA-C22.2 No. 61010-1
o EN 50104 (for O2)

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All You Need to Know About HC (Methane-CH4) Detector

What Is Methane Gas?

• Methane is a colourless, tasteless, odourless gas and has the chemical formula CH4 – methane is the main component of natural gas. It is made up of one atom of carbon and four atoms of hydrogen.

• Methane is produced naturally by the process of methanogenesis and is found under the ground and in seabed locations – it is commonly used in chemical industries and also for electricity generation.

• Methane is non-toxic but highly explosive

• Production of Methane gas occurs naturally in many industries including waste disposal, mining, oil and gas, petrochemical and the energy sector.

Where is Methane Gas Used?

• Methane gas is commonly used in chemical industries and is used to refine petrochemicals. It is also used as a fuel and is burned in gas turbines or steam generators to produce electricity.

• Methane is widely used domestically for heating and cooking in homes

• Methane is the main component of Liquefied Natural Gas (LNG) and Compressed Natural Gas (CNG). Methane is generated by the decomposition of biodegradable solid waste as well as animal and human waste. It is therefore commonly present in landfill sites and sewage treatment works.

• As Methane is an incredibly potent, hazardous greenhouse gas it is important to not only manage storage and production but also re-use and recycle the gas. Methane emissions represent a profitable solution to global climate change.

• The most common anthropogenic sources of methane gas are agriculture, mining, landfills and natural gas oil activities.

Why Is Methane Gas Dangerous? 

• Methane is not generally considered a toxic gas however, it is extremely flammable even in low concentrations when mixed with other chemicals – it is also an asphyxiant as it will displace oxygen. This is particularly dangerous in confined spaces working.
• In order to create a fire/explosion, you need three things:
  • Oxygen
  • An ignition source and
  • A fuel

• Take away the oxygen and you remove the risk of explosion – in contrast, high levels of oxygen will cause fuels to burn faster and more vigorously. For an explosive atmosphere to exist, a certain ratio of oxygen and fuel must exist. The ratio differs depending on the fuel.

In the gas detection industry, such ratios are known as lower explosion limits (LEL) and upper explosion limits. (UEL) in %Vol

Methane Gas: LEL & UEL

• LEL (Lower Explosive Limit) is defined as “the minimum concentration of a particular combustible gas necessary to support its combustion in air.” Concentrations below this level will not burn. The UEL (Upper Explosive Limit) is defined as “the highest concentration (percentage) of a gas or a vapor in air capable of producing a flash of fire in presence of an ignition source.”
• The range between LEL and UEL is referred to as the flammable range and as the name suggests is when fire/explosions will occur.

• As can be seen from the table, the LEL for methane(HC) is 5% Vol and UEL is 15% Vol. Concentrations of 9% Vol are thought to be the most volatile. It may sound strange but concentrations above 15% Vol will not be explosive as the air is too saturated with methane. However, this is when asphyxiation can be just as hazardous.

• Our MSR sensor is calibrated on LEL scale i.e. 0-5% Vol = 0- 100% LEL therefore we prefer to set a alarm level or actuate exhaust fan at 25% LEL, which = 1.25% Vol (HC)CH4

• Asphyxiation becomes a risk when there are high concentrations of methane. This is because the methane displaces the oxygen. We need approximately 18% Vol oxygen to breath, levels below 16% Vol can be dangerous and levels below 10% Vol can cause immediate loss of consciousness and inevitably death. Working in confined spaces can be extremely dangerous if exposure to methane (or any other gas for that matter) is considered a risk.

Sensor Technology Used

• There are two technologies used to manufacture Methane Sensors, Catalytic Bead and Infrared sensor technologies.

• Catalytic Bead Sensors, infrared sensors, and are prone to being poisoned by silicone, lead, sulfur and halogenated compounds. They also require frequent calibration and although less costly than an Infrared sensor, require replacement on a more frequent basis. Because they are lower in cost, some end users still prefer to use Catalytic Bead Sensors as a Methane Sensor, especially where there could be other combustible solvent vapors present that the Catalytic Bead Sensor will detect, while an Infrared sensor would not.

• As a Methane Sensor, Infrared sensor technology has now become the dominant Methane Gas Sensor in a fixed gas detection system for combustible detection of hazardous levels of methane in air. Because an Infrared Methane Sensor does not require oxygen to operate, Infrared Methane Sensors can also be used in a 0-100% by LEL methane or other hydrocarbon gas process gas environment, such as in natural gas pipelines, utility applications and bio gas applications.

• A Catalytic Bead Methane Sensor works as a simple Wheatstone bridge circuit, where an active and reference filament wound from platinum wire with a palladium based catalyst changes the proportional resistance between the active and reference bead of the methane sensor in proportion to the amount of methane detected in a background of air.

• Infrared Gas Detection instruments that use infrared methane sensors often use two wavelengths of infrared energy, with one active wavelength used for gas absorption, and the other as a reference wavelength to compensate the output signal of the Infrared Detection system for the effects of temperature and humidity.

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