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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.

hydrogen-sensor-500x500Display-InLine

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

MSR PX2 Series Sensor Transmiter

Methane gas sensor – online LEL monitor for natural gas, LNG, PNG for Zone 1, 2 with ATEX, IECEX, SIL 2

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

MSR PX2 for Combustible_Flammable GasMethane 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

Ethylene (C2H4) Gas Detector for Fruit Ripening Application

What is Ethylene(C2H4)?

  • Ethylene (C2H4) is a colorless gas which is highly flammable with a Lower Explosive Limit of 2.7% in air.
  • Measuring range: 20-2000 PPM, 0-200 PPM, 0-100% LEL C2H4 with Semiconductor and Electrochemical Sensing Technology
  • Studies have indicated a low toxicity of ethylene and no risk to human health has been identified. It is naturally occurring, but it can also occur as a result of combustion and is manufactured by industrial processes from Methane and petroleum.
  • It has a slight ‘musky, sweet’ odour. Some fruit will produce C2H4 as ripening begins. Apples and pears are examples of fruit that produce ethylene with ripening. It is responsible for the changes in texture, softening, colour, and other processes involved in ripening.

Ethylene TWA limit

Where is Ethylene (C2H4) Used?

C2H4 is widely used in the chemical industry. Polyethylenes of various density and melt flow account for more than 50% of world Ethylene demand. The primary use of polyethylene is in:

  • film applications for packaging, carrier bags and trash liners.
  • injection moulding
  • pipe extrusion
  • wire, cable sheathing and insulation,
  • extrusion coating of paper and cardboard.

IMG_20170405_133050716H2 ARB2 sesnor

C2H4 is the starting material for the preparation of a number of two-carbon compounds including Ethanol, Ethylene Oxide or converted Ethylene Glycol for antifreeze and Polyester fibres and films and Vinyl Chloride (converted to PVC). In addition to these compounds, ethylene and Benzene combine to form ethylbenzene, which is dehydrogenated to Styrene for use in the production of plastics and synthetic rubbers.

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

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

CO2 infrared sensor for dispensing and refrigeration systems

We are pleased to offer CO2 Sensor Transmitter for Refrigeration Systems in India.

Exchangeable sensor including digital value processing, temperature compensation and self control for the continuous monitoring of the ambient air to detect CO2.
The sensor cartridge SC2 includes a CO2 sensor element with infrared sensor and an amplifier as well as a μController for measured values processing. The IR measuring principle with integrated temperature compensation ensures highest accuracy, selectivity and reliability despite the long calibration interval. In the μController, all the data and measured values of the sensor element are stored fail-safe and transmitted digitally via the local bus to the sensor board SB2 or MSB2. The calibration management is also integrated in the μController of the sensor cartridge.
Calibration is done either by simply replacing the sensor cartridge or by using the comfortable, integrated calibration routine directly at the system.
APPLICATION
The PolyGard®2 Sensor Cartridge is used for the detection of CO2 leakages in dispensing and refrigeration systems.
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 > 15 years
  • Software according to SIL2 compliant development process

Continue reading “CO2 infrared sensor for dispensing and refrigeration systems”

2-POINT Spring-Return Joventa/Frakta Electric Damper Actuator

S

Application

The JOVENTA SPRINGBACK electric, spring return damper-actuator series has been specially developed for the motorized operation of safety air dampers (anti-icing) in air conditioning systems, smoke evacuation dampers and sealing dampers. When the control signal is applied the actuator drives the damper to the operational position, while evenly tensioning the integrated spring. After a power failure the stored energy in the spring immediately brings the damper to the safety position. Manual operation is automatically cancelled when the actuator is in electrical operation.

The compact design and universal adapter fitted with limitation of rotation angle make this JOVENTA actuator highly versatile.

Key features :-

  • 2-point control Up to 5 actuators in parallel operation possible
  • Plug-in terminal block connection
  • Simple direct mounting with universal adapter on Ø 10 mm to 20 mm shaft or 10 mm to 16 mm square shaft. 77mm min shaft length
  • Selectable direction of rotation
  • Limitation of rotation angle
  •  Manual positioning with crank handle
  •  2 adjustable auxiliary switches See back page for settings
  • Automatic shut-off at end position (overload switch)
  • Energy saving at end positions
  •  Actuators available with 1 m halogen-free cable
  • Customized versions available
  • Devices meet CE requirements

For more Details please contact us : Contact 

Monitoring Gas Concentrations in Laboratories

Our Door Entry Module DEM-06 is specially designed for monitoring gas concentrations in laboratories or any such closed rooms.

Several experiments are conducted in a university, research or medical laboratories. Depending upon the applications there are many different gases that are used in various laboratories and hence they are equipped with gas storage cylinders and pipelines. These gases are often toxic, flammable or combustible and any leak from a gas cylinder or a pipeline can cause potential fatal incident. Any gas leak could be a potential threat to the safety of personnel working within the laboratory.

Our door entry module DEM-06 in combination with our DGC-06 makes your laboratory a safe place to work within. The module DEM-06 controls the access to closed laboratories, ensuring the safety of the employee working in the laboratory.

The DEM-06 can monitor the alarm situations of the DGC-06 systems via the RS-485 bus. Up to 128 relay information bits can be used via the field bus to control alarm displays and warning outputs. Configuration can be done via the password protected keypad to get level and project independent structure without specific programming knowledge.DEM-06 offers simple and fast commissioning due to pre-configuration with standard parameters.

Please e-mail us for any closed room gas monitoring applications.

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

IMG_20170405_133050716 MC2 H2 sensor IP65 Gas-Sensor MC2 - sensor

Hydrogen sensor transmitter – non-flameproof, flameproof LEL detector for Zone 1 with ATEX, IECEX, SIL 2 certificate, display, relays

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

LPG Leakage Detection

GasAlarm India pleased to offer LPG sensor transmitter / Leakage detector/ Analyser in association with ALVI Technologies- Australia &  MSR Germany with following features:

  • Measuring range: 0-100% LEL (lower explosive limit), 0-100% Vol (analysis)
  • Technology: Pellistor / catalytic bead (flammability monitoring), Infra-red
  • Output: 4-20mA, 0-10V, RS485 modbus, Lon, BacNET
  • Enclosure: IP44, IP54, IP65
  • Certificate: UL 61010, UL 2075, ATEX EExd, ATEX EExn, CE
  • Mounting: wall mountable, duct mountable
  • Installation area: safe area, hazardous area, explosion-proof

Application areas: Kitchen , gas bank, bottling plant, booster station, gas

store, pharmaceutical, cylinder store, gems processing, heat processing, furnace, engine room, testing rooms, automobile, defence, warship, annealing plant, chemical plants, oil & gas, fire safety, domestic gas pipeline, kitchen, refinery, food processing, cement, bearing, machine industry, swimming pool, combustion area, bakery, commercial, hotels, mines, confined space, gasifier, stockyard, oil wells, biogas plant, landfill, boiler plant, thermal power plants etc.

Continue reading “LPG Leakage Detection”

LPG Detector – Liquified Petroleum Gas Leak Detection Systems

GasAlarm India pleased to offer LPG sensor transmitter / detector/ analyser in association with ALVI Technologies- Australia &  MSR Germany with following features:

  • Measuring range: 0-100% LEL (lower explosive limit), 0-100% Vol (analysis)
  • Technology: Pellistor / catalytic bead (flammability monitoring), Infra-red
  • Output: 4-20mA, 0-10V, RS485 modbus, Lon, BacNET
  • Enclosure: IP44, IP54, IP65
  • Certificate: UL 61010, UL 2075, ATEX EExd, ATEX EExn, CE
  • Mounting: wall mountable, duct mountable
  • Installation area: safe area, hazardous area, explosion-proof

Application areas: Kitchen , gas bank, bottling plant, booster station, gas store, pharmaceutical, cylinder store, gems processing, heat processing, furnace, engine room, testing rooms, automobile, defence, warship, annealing plant, chemical plants, oil & gas, fire safety, domestic gas pipeline, kitchen, refinery, food processing, cement, bearing, machine industry, swimming pool, combustion area, bakery, commercial, hotels, mines, confined space, gasifier, stockyard, oil wells, biogas plant, landfill, boiler plant, thermal power plants etc
Features:

  • reverse polarity protected
  • poisoning protected
  • low flashing temperature for longer sensor
  • modular architecture
  • manual calibration
  • expected life: 3 years-15 years
  • low response time
  •  Conformity to
    o EN 50271
    o EN 61010-1
    o ANSI/UL 61010 1
    o CAN/CSA-C22.2 No. 61010-1

Gas type available: combustible gas detector, confined space gas detector, gas detection system, gas detectors, gas analyzers, exhaust gas analysers, biogas analyzers, stack gas analyser, catalytic gas sensor, combustible gas sensor, gas sensors, hydrogen gas sensor, methane detector, LPG bottling plants, LPG burners, LPG cylinder plant, LPG fuel tank, lpg gas leakage sensor, gas train, lpg gas tanker, lpg station, lpg vaporizer, natural gas alarm, natural gas plants, combustion analyzer, biogas generation plant, biogas generator, biogas power generation plant, biomass gasifier, propane vaporizers.

 

Carbon Monoxide Sensor/Detector and Transmitter For Ventilation Control

Make :- MSR Germany

Area Of Application:-   

MSR Germany Carbon Monoxide (CO) Detectors and Transmitters save energy costs by controlling ventilation equipment (Fan) in areas where high concentrations of CO may present serious health problems.  Various building and occupancy codes require that ventilation fans run 100% of the time in enclosed areas, such as parking garages, unless a CO monitoring system is installed in that particular areas .

The MSR Germany Carbon Monoxide Detector/Transmitter has an excellent sensing unit (Electrochemical – Gel Type Sensor Cell ).  As carbon monoxide levels increase, contacts are provided to actuate ventilation equipment (Fan) and an audible internal alarm will activate if CO levels continue to rise.  Since ventilation equipment is only required when CO levels are elevated, energy costs for HVAC operation are significantly reduced. 

 Carbon Monoxide Transmitter is used to provide a proportional analog signal to the Multi-Input Control Panel or a Building Management System (BMS).                

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 smouldering fire and smoke detection.
  • VESFA system (very early smoke and fire alarm)

SPECIFICATIONS:- 

Continue reading “Carbon Monoxide Sensor/Detector and Transmitter For Ventilation Control”

CO Sensor Transmitter

Carbon Monoxide Sensor Transmitter with enhanced CO Gas radicals detection capability

Make :- MSR Germany

Area Of Application:-                        

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 smouldering fire and smoke detection.
  • VESFA system (very early smoke and fire alarm)

SPECIFICATIONS:- 

  • Sensor Model Available in : – MA, MC2, SC2, PX2 Series.
  • 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:-  ≤ 50 Sec
  • Warm-up time (First Time):- ≤ 3 Min.
  • Protection Class Available in : IP44/54/65/66 (Flameproof and weatherproof )
  • Stability & resolution: – ± 3 ppm
  • Sensor life expectancy:- ≥ 5 years (Site Feedback ≥ 10 Years  )
  • Calibration Interval: 1 Year.
  • Sensor Coverage Area: – 700 m2 to 750m2, 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 availabel in 2-10VDC
  • Flammability: – UL 94: V2
  • Warranty: 12 Month only on manufacturing defects
  • Guidelines Approval : EMC Directives 2004/108/EC, EN 61010-1:2010, ANSI/UL 61010-1, CAN/CSA-C22.2 No. 61010-1, ATEX , SIL2, CE, UL , IECEX.

For Technical Datasheet please click here 

Explosion Proof Differential Pressure Switch – Air or Other Non-Aggressive, Combustible Gases

Explosion proof differential pressure switch for differential pressure, overpressure and vacuum pressure monitoring of air, clean gases, dry vapour for HVAC applications in building, commercial and industrial area. With its adjustable knob, you can set any switching point within the range. With its intrinsically safe certification, it can be installed in Zone 1 and Zone 2 hazardous area.

Explosion Proof BECK Differential Pressure Switchpdf-image

For air, clean gases, dry vapour
Model: 930.8x Ex (For Hazardous area Zone 1, Zone 2)

Beck Air differential pressure switch - 930

Air differential pressure switch – 930 Ex

930.8x Ex is explosion proof 930_Ex-Proof_Differential Pressure Switchdifferential pressure switch for hazardous area or flameproof classified area installation. This DP switch can be used for monitoring over-pressure, vacuum and differential pressure of air or other non-combustible, non-aggressive gases.

where x is:

  • 0 = 20-300 Pa with switch differential of 10Pa (0.2 to 3 mbar)
  • 3 = 50-500 Pa with switch differential of 20Pa (0.5 to 5 mbar)
  • 5 = 200 – 1000 Pa with switch differential of 100Pa (2 to 10 mbar)

Differential pressure Switch 930 Ex comes with an adjustable knob which can be rotated, thus it can set at required threshold differential pressure to switch changeover contacts, for pressure control & automation.

Key Features:

  • Explosion proof Zones 1 and 2 with ATEX certification
  • Adjustable knob to set switch at any desired switching pressure
  • Transparent enclosure for ease to monitor switch point
  • Squeezing cable gland to dust and moisture protection
  • Robust performance over the life
  • Easy installation
  • IP54 protected
  • Maximum operating pressure: 10 kPa
  • Operating temperature: -20 deg cel to + 80 deg cel
  • Silicone diaphragm, tempered at 200 deg cel
  • Switch rating: max. 1.0A / 250 VAC
  • Certification: Low Voltage Directive 2006/95/EC; RoHS Directive 2011/65/EC

Some suggested fields of application include:

  • Monitoring air filters and ventilators
  • Monitoring industrial cooling-air circuits
  • Overheating protection for fan heaters
  • Monitoring flows in ventilation ducts
  • Controlling air and fire-protection flaps
  • Frost protection for heat exchangers
  • Airflow switch

For more details please feel free to Contact us 

Flame Detector : With Analog Output

Gas Alarm India in association with  Gas Alarm – Australia takes pride to introduce flame detector in India.

Detector / transmitters / ANALYZER / MONITORING for explosion proof hazardous area (zone 1, 2)

Explosion proof ATEX logo
Detector / transmitters / ANALYZER / MONITORING for explosion proof hazardous area (zone 1, 2)

Detector or sensor transmitter for online, continuous monitoring of all type of flame/fire. These transmitters offer German industry standard analog output in current or voltage form, or digital signals like Modbus RTU with RS485 serial interface. Optionally, these are also equipped with potential free relays.

These can be mounted on wall, ceiling, columns, ducts or pipelines. These can be single gas or multi-gas detection transmitters.

The sensor instruments are SIL 2 certified to offer best safety.

For More Details : Please click here

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

SC2 sensor cartridge

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

SC2 Ordering info

 

Sensor Board SB2

SC2 only sensorboard

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

SB2 order info For More Details please feel free to contact us 

FISCHER – FT61 – Temperature and Humidity Sensor

FISCHER FT61 New long-term stable temperature and humidity sensor with LCD for non-aggressive gaseous media

The digital humidity and temperature device is ideally suited for measuring moisture and temperature of non-aggressive gaseous media. For the monitoring process, the sensor unit can be used separately or integrated in a clean room panel.

The measuring device comprises a display unit and a sensor, which transfers the measured data via I²C bus to the display. Both units can be displayed at the same time or alternatively. The measuring ranges for humidity are between 0…100 % r.F ± 3 % and for temperature between: -40…100°C, ± 0.5°C.

The standard signals 0…10 V, 0… 20 mA und 4…20 mA are available for the analogue outputs.

FT61_Titelbild

Key Features:

  • Capacitive humidity sensor
  • Electronic temperature sensor
  • Long-term stable without calibration
  • High repeatability
  • LC display with colour change of backlighting as clean room signal light user prompt in clear text, in-situ calibration or adjustment, integrated control unit / zeroing and setting without PC
  • Password-protected
  • Industry standard analogue output
  • Rugged and constant sensor type out of VA (stainless steel) material
  • Protection IP65 standard housing.

For details contact us