Products Blog

Electrical Damper Actuators

When it comes to security & fire electric actuator for toxic  fumes and smoke diperson ,  Frakta, Joventa are in great demands  to control and monitor the  damper.

Quick key  features with the different model no are as follows : 

Product Supply voltage Torque Control Signal Position Signal Running Time
DAS1 24V 8Nm 2/3 Pt none 30 sec
DAS1.S 24V 8Nm 2/3 Pt AS 30 sec
DAS1.P1 24V 8Nm 2/3 Pt 1 k 30 sec
DAS1.P2 24V 8Nm 2/3 Pt 140 30 sec
DA1 24V 16Nm 2/3 Pt none 80 sec
DA1.S 24V 16Nm 2/3 Pt AS 80 sec
DA1.P1 24V 16Nm 2/3 Pt 1k 80 sec
DA1.P2 24V 16Nm 2/3 Pt 140 80 sec
DAL1 24V 24Nm 2/3 Pt none 125 sec
DAL1.S 24V 24Nm 2/3 Pt AS 125 sec
DAL1.P1 24V 24Nm 2/3 Pt 1k 125 sec
DAL1.P2 24V 24Nm 2/3 Pt 140 125 sec
DAG1 24V 32Nm 2/3 Pt none 140 sec
DAG1.S 24V 32Nm 2/3 Pt AS 140 sec
DAG1.P1 24V 32Nm 2/3 Pt 1k 140 sec
DAG1.P2 24V 32Nm 2/3 Pt 140 140 sec
DMS1.1 24V 8Nm 0..10V 0..10V 30 sec  
DMS1.1S 24V 8Nm 0..10V 0..10V, HS 30 sec  
DM1.1 24V 16Nm 0..10V 0..10V 80 sec
DM1.1S 24V 16Nm 0..10V 0..10V, HS 80 sec
DML1.1 24V 24Nm 0..10V 0..10V 125 sec  
DML1.1S 24V 24Nm 0..10V 0..10V, HS 125 sec  
DMG1.1 24V 32Nm 0..10V 0..10V 140 sec
DMG1.1S 24V 32Nm 0..10V 0..10V, HS 140 sec
DAS2 230V 8Nm 2/3 Pt none 30 sec
DAS2.S 230V 8Nm 2/3 Pt AS 30 sec
DAS2.P1 230V 8Nm 2/3 Pt 1k 30 sec
DAS2.P2 230V 8Nm 2/3 Pt 140 30 sec
DA2 230V 16Nm 2/3 Pt none 80 sec
DA2.S 230V 16Nm 2/3 Pt AS 80 sec
DA2.P1 230V 16Nm 2/3 Pt 1k 80 sec
DA2.P2 230V 16Nm 2/3 Pt 140 80 sec
DAL2 230V 24Nm 2/3 Pt none 125 sec
DAL2.S 230V 24Nm 2/3 Pt AS 125 sec
DAL2.P1 230V 24Nm 2/3 Pt 1k 125 sec
DAL2.P2 230V 24Nm 2/3 Pt 140 125 sec
DAG2 230V 32Nm 2/3 Pt none 140 sec
DAG2.S 230V 32Nm 2/3 Pt AS 140 sec
DAG2.P1 230V 32Nm 2/3 Pt 1k 140 sec
DAG2.P2 230V 32Nm 2/3 Pt 140 140 sec
DMS2.2 230V 8Nm 0..10V 0..10V 30 sec
DMS2.2S 230V 8Nm 0..10V 0..10V, HS 30 sec
DM2.2 230V 16Nm 0..10V 0..10V 80 sec
DM2.2S 230V 16Nm 0..10V 0..10V, HS 80 sec
DML2.2 230V 24Nm 0..10V 0..10V 125 sec
DML2.2S 230V 24Nm 0..10V 0..10V, HS 125 sec

Continue reading “Electrical Damper Actuators”

Security Fire Damper Actuator – SFL1.90T/12

When it comes to security & fire electric actuator,  Frakta, Joventa are in great demands  to control and monitor the fire damper.

Joventa actuator

Key features

  • 2-point control
  • 2 auxiliary switches See back page for settings
  •  10/11/12/14 mm steel adapter for square shaft
  • Plug in terminal block connection
  •  Direct connection of ST1.72N or ST1.90N temperature sensor to monitor shaft internal temp. Switch point of temperature sensor ca. 72°C or ca. 90°C
  • Actuator temperature sensor to monitor ambient temperature, switch point of temperature sensor ca. 72°C
  • Low noise level
  • Manual operation with crank handle
  • Energy saving at end positions
  • Actuators available with 1m halogen-free cable
  • Customized versions available
  • Devices meet CE requirements

For more details and enquiries please feel free to contact us

GmbH German Sensor Technology

MSR Germany Gas Detector technology stands for qualitatively high-grade and innovative products and solutions in the field of Gas leak Sensors and controller. Our goods and services are concentrated on the needs of our customers, who can rely on the fulfillment of their requested service. Adherence to schedules and an outstanding quality are at the core of our consequential customer orientation.

The constant quality optimization of our products and processes, as well as the consequential enhancement of operational quality management systems, is as a matter of course for us.

Within the framework of our quality management system, continuous improvement processes are being consequently developed further that have the effect of increasing quality.

An environmental management system in accordance with ISO 14001 is implemented and will be continuously developed further.

A quality management system in accordance with ISO TS16949 is in the final implementation stage.

An essential factor of success is our highly qualified and motivated employees. We choose our employees according to our range of services, the demands of our clients, and our company’s philosophy. We attach a great importance to the constant further qualification of our personnel.

Come join our hands and make our planet a better place to live

For more details please click here

ATEX – Approved Online Sensor Transmitter

Description: 

  • Toxic and Combustible (CO, CO2, 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.
 Combustible  gas sensor – online LEL monitor 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), liquefied 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 Gas

Continue reading “ATEX – Approved Online Sensor Transmitter”

Online Ammonia Gas Leakage Detection

ALVI Automation in association with ALVI – Technologies feel pleased to offer Ammonia Gas Leak Sensor Transmitter in Indian and Australasian countries to stop and control the hazardous tragedy caused by leakage of Ammonia gas from the food industries like cold storage, fruit ripening chamber and also from the chemical and gas factories .

Sensor offered by ALVI Group are having all advanced and new German technologies, as all these sensor are manufactured in Germany hence the quality and reliability are assured.

Ammonia (NH3) Gas Leak Sensor Transmitter Description are as follows : 

Model no :MC2-D-E1125-C-X

Make : MSR German

  • Measuring Range : 0-300/500/1000 PPM
  • Gas Type : NH3
  • Sensor Cell : Electrochemical
  • Operating Voltage : 24 VDC
  • Output Signal : 4-20 mA or 2-10 VDC
  • Housed in IP65 polycarbonate enclosure
  • Housing UL94 V2 approved
  • Wall mount housing
  • Calibration interval : 12 month
  • Continuous Monitoring
  • High accuracy, selectivity and reliability
  • Low zero point drift
  • Long life sensor
  • Easy maintenance and calibration by exchange of the sensor unit or by comfortable on site calibration
  • Software according to SIL2 compliant development process

For more details and quote please mail us on : Info@alviautomation.com

Wish You All Many Many Happy New Year 2018

We Wish You & Your Family Many Many Happy New Year 2018.

Thank you for your association and trust on our organisation, it has been rewarding working with you all and may this new year bring  forth many such rewarding moments for us to share ..!

New year celebraation

We wish you luck, prosperity, health and look forward to continue serving you..!

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.

H2 ARB2 sesnor

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”

MSR – Quick Sensor Description & Technical Datasheet

MODEL NO Quick Description Range Sensor Cell Datasheet
FOR COMBUSTIBLE GASES
MC2-0-P3400-A-0 Methane CH4 0-100% LEL Pellistor View
MC2-0-P3402-A-0 LPG 0-100% LEL Pellistor View
MC2-0-P3405-A-0 Acetylene C2H2 0-100% LEL Pellistor View
MC2-0-P3408-A-0 Ammonia NH3 0-100% LEL Pellistor View
MC2-0-P3410-A-0 Ethylene C2H4 0-100% LEL Pellistor View
MC2-0-P3425-A-0 Ethyl alcohol C2H5OH 0-100% LEL Pellistor View
MC2-0-P3427-A-0 Ethyl acetate C4H8O2 0-100% LEL Pellistor View
MC2-0-P3435-A-0 Hexane C6H14 0-100% LEL Pellistor View
MC2-0-P3440-A-0 Hydrogen H2 0-100% LEL Pellistor View
MC2-0-P3450-A-0 Methanol CH3OH 0-100% LEL Pellistor View
MC2-0-P3460-A-0 Butane C4H10 0-100% LEL Pellistor View
MC2-0-P3472-A-0 Cyclopentane C5H10 0-100% LEL Pellistor View
MC2-0-P3475-A-0 Pentane C5H12 0-100% LEL Pellistor View
MC2-0-P3476-A-0 Isopentane C5H12 0-100% LEL Pellistor View
MC2-0-P3480-A-0 Propane C3H8 0-100% LEL Pellistor View
MC2-0-P3482-A-0 Isopropyl alcohol C3H8O 0-100% LEL Pellistor View
MC2-0-P3484-A-0 Isopropyl alcohol C3H8O 0-100% LEL Pellistor View
MC2-0-P3485-A-0 Acetone C3H6O 0-100% LEL Pellistor View
MC2-0-P3490-A-0 Toluene C7H8 0-100% LEL Pellistor View
MC2-0-P3491-A-0 Heptane C7H16 0-100% LEL Pellistor View
MC2-0-P3496-A-0 Gasoline vapors 0-100% LEL Pellistor View
MC2-0-S20XX-X-0 Freon R134a, See Datasheet SEMICONDUCTOR View
         FOR TOXIC GASES
MC2-0-E1110-B-0 Carbon monoxide CO 0-300 PPM & More Electrochemical View
MC2-0-E1125-0-0 Ammonia NH3 0-300 PPM &More Electrochemical View
MC2-0-E1129-A-0 Nitric oxide NO 0-300 PPM &More Electrochemical View
MC2-0-E1129-B-0 Nitric oxide NO 0-300 PPM &More Electrochemical View
MC2-0-E1130-A-0 Nitrogen dioxide NO2 0-300 PPM & More Electrochemical View
MC2-0-E1130-B-0 Nitrogen dioxide NO2 0-300 PPM &More Electrochemical View
MC2-0-E1130-C-0 Nitrogen dioxide NO2 0-300 PPM & More Electrochemical View
MC2-0-E1181-A-0 Chlorine dioxide ClO2 0-20 PPM &More Electrochemical View
MC2-0-E1183-C-0 Cyan hydrogen HCN 0-300 PPM & More Electrochemical View
MC2-0-E1185-B-0 Formaldehyde CH2O 0-300 PPM &More Electrochemical View
MC2-0-E1187-A-0 Phosphine PH3 0-300 PPM & More Electrochemical View
MC2-0-E1188-A-0 Silane SiH4 0-300 PPM &More Electrochemical View
MC2-0-E1189-C-0 Ethylene C2H4 0-300 PPM & More Electrochemical View
MC2-0-E1190-A-0 Ozone O3 0-300 PPM & More Electrochemical View
MC2-0-E1193-C-0 Chlorine Cl2 0-300 PPM &More Electrochemical View
MC2-0-E1195-A-2 Oxygen, 2 years O2  0-25% VOL & More Electrochemical View
MC2-0-E1195-A-3 Oxygen, 3 years O2 0-25% VOL & More Electrochemical View
MC2-0-E1195-A-5 Oxygen, 5 years O2 0-25% VOL & More Electrochemical View
MC2-0-E1195-A-7 Oxygen, 7 years O2 0-25% VOL & More Electrochemical View
MC2-0-E1196-B-0 Sulphur dioxide SO2 0-100 PPM & More Electrochemical View
MC2-0-E1197-A-0 Hydrogen sulphide H2S 0-100 PPM & More Electrochemical View
MC2-0-E1198-A-0 Fluorine F2 0-20 PPM & More Electrochemical View
MC2-0-I1164-A-0 Carbon dioxide CO2 0-2k, 50k, & 20K Infrared View

Methane (CH4) Gas Detector

MC2 sensor

Methane gas is a combustible gas with chemical formula CH4.

Methane (CH4) gas detector is also named as Natural gas detector.

Methane (CH4) gas detector is used to detect Methane gas.

Methane (CH4) gas detector are used in applications such as  Boiler room, Heating room, Kitchen in Hotels or Apartments,  Laboratories and Tunnels

Methane gas is an odourless gas, probably the most abundant
organic compound on earth.

Methane (CH4) gas is an extremely flammable gas.

When Methane (CH4) gas is sold commercially it is usually mixed with small amounts of foul-smelling Sulphur compounds for easier detection of leaks.

Methane (CH4) gas is also known as swamp gas, since Methane (CH4) gas is formed during decomposition of organic matter in oxygen-deficient environments, such as the bottom of a swamp.

Methane (CH4) gas is a greenhouse gas and emissions, primarily from agriculture is considered a contributing factor to the enhanced greenhouse effect.

The relative abundance of Methane (CH4) gas makes it an attractive fuel.

However, since it is a gas at normal conditions, Methane (CH4) gas is difficult to transport from its source.

Sensor coverage for Methane (CH4) gas detector is 35-40 m2 (recommended).

Methane (CH4) gas is lighter than air, mounting height for Methane (CH4) gas detector is 0.2 meter below ceiling.

MSR Germany Methane (CH4) gas detector converts the measurands           0-100% LEL into signals 2-10 Vdc or 4-20 mA output

Methane Gas Detector MC2

arba_display_frei

H2 ARB2 sesnor

IMG_20170419_183633496

  • Output 4-20 mA or 2-10 Vdc
  • Power supply 24 Vdc
  • Ranges 0-100% LEL
  • Sensor Element Pellistor (catalytic bead sensor)

Click on MSR_MC2_Hydrogen Sensnor Transmitter to download the datasheet

Feel free to contact us if you’re interested in the product or have any questions.

Or write us an e-mail in the contact form below straight away.

Installation guidelines (FAQ) for Carbon Monoxide (CO) gas detectors in underground garages, parking houses and tunnels.

What are the mounting heights for CO gas detectors?

  • Carbon Monoxide (CO) gas has a slightly lower density than air. Recommended mounting height for Carbon Monoxide (CO) gas detector is 1.5 m above the floor.
  • According in garages are concentrations expected less 1%VOL and because of thermal an convection of gas the spreading is at whole area.

How many CO gas detectors are needed in a stationary installation?

  • There may exist some consultants, some local regulations or some country regulations, however, there are no absolute rules in determining the number of gas detectors and gas detectors location.
    (EN50545 CO 400m²).
  • The number of gas detectors are to be decided from case to case depending on the situation of the location you want to detect and monitor.
  • There are recommendations-guidelines (rule of thumbs).

One gas detector per 400 m2 (i.e. one CO gas detector per 400 m2), plus additional gas detectors at the locations where gas leakage is likely to occur, preferably no farther than 1.5 meter where gas leakage is likely to occur.

What are the measuring ppm ranges for pre-alarm and warning alarm for  CO gas detectors?

CO detectors alarm levels:

  • Pre-alarm: 25 ppm.
  • Warning alarm: 35 ppm.
  • Fire alarm: 200 ppm

Measuring Range:0-300 ppm

What is the gas sensor (cell) life time for CO gas detectors?

  • CO gas sensor (cell) life expectancy is 5-7 years, normal operation environment.
  • If gas sensor (cell) is intensively exposed for fumes (gas) the life time is shorter.
  • If gas sensor (cell) is less exposed for fumes (gas) the life time can be longer.

Are the gas detectors needed to be re-calibrated?

  • The CO gas detectors are pre-calibrated before delivery.
  • The CO gas detectors are recommended to be re-calibrated on site or in-house once a year.

What to do when life time of gas sensor (cell) exceeded the expected life time ?

There are some different alternative choices, for examples:

  • New gas sensor (cell) can be ordered with re-calibration of the new gas sensor (cell) on existing PCB on site. For this alternative, the re-calibration instructions are needed to be followed very carefully. Recommended to be done of trained technicians.
  • Existing PCB can be returned to ALVI Group OR MSR and new sensor (cell) can be ordered.
  • The existing PCB can be factory pre-calibrated with the new sensor (cell).
  • New factory pre-calibrated gas sensor (cell) and PCB can be ordered.
  • Then the installer easily replace the existing gas sensor (cell) and PCB with the new factory pre-calibrated gas sensor (cell) and pcb. This is the easiest way of all above examples.

Click here to download the datasheet

Feel free to contact us if you’re interested in the product or have any questions.

Or write us an e-mail in the contact form below straight away.

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

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

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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