Natural Refrigerant Gas Leak Detection

We are pleased to introduced Natural Refrigerant Gas Leak Detection & Control Alarm System in Australasian Countries.

MSR Germany PolyGard2 Natural Refrigerant Gas Leak  Detector and Control Alarm System (CO2, Hydro-carbons including Ammonia, HCF, HCFC) is designed to continuously monitor for Leaking Refrigerants in the trace levels.

Features:

• Monitor CO2 Refrigerant leaks in 0-2000 PPM range
• Monitor hydro-carbon leaks in 0-100 % LEL (methane, LPG, propane, butane etc)
• Duct mount option for detection of leaking refrigerants in return ventilation ducts
• Integral relay option (DPDT, 5 A, 250V contacts) for A-V Alarm or ventilation fans or shutting off gas supply solenoid valves
• Stand-Alone, wall mount Refrigerant Leak alarm, 24 V AC/DC operation, with display, 4 x Relays for fans,  A-V Alarm, diagnostics/watchdog with system fault relay, analogue output for PLC, BMS, SCAD
•  Multi-point Monitoring System with 4 – 24 Remote Transmitters for CO2, Ammonia, Hydro-carbons
• Option of Remote sensor/transmitters in IP 54, IP 65, Stainless Steel housings
• Infra-Red based, gold-plated CO2 sensor with Automatic Background Calibration (no maintenance required)
• Hand-held portable CO2, Ammonia, hydrocarbon detection instruments
• Oxygen Monitoring Transmitters for 0-25 % Vol O2 (oxygen deficient atmospheres created by CH4, CO2
  in enclosed areas.

For more details and query please   Click Here  

Carbon Monoxide (CO) Detector – Parking Systems

Carbon Monoxide Detector 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.
• VEFSA system (very early fire and smoke alarm)

SPECIFICATIONS:- 

• Sensor Model Available in Stock : – MA-0-1110-F-B
• 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: V0
• Warranty: 12 Month only on manufacturing defects
• Guidelines Approval : EMC Directives 2004/108/EC, CE.

For Technical Datasheet please click here 

GAS ALARM SYSTEM with Control and Monitoring Solution for Glass Plant Application

ALVI Automation/Gas Alarm Systems designed engineered PLC & HMI based gas detection, monitoring  and control solution which include:

The Gas Alarm system components shall have similar features as specified below:
1. Gas controller cum display unit:
It shall be digital programmable logic controller (PLC) with CPU based, based on decentralized monitoring architecture with: 5 x slave controller (without display, with local digital output for alarm / Fan / Valve control etc) modules over RS485 serial interface TCP/IP or ModBus Communication, 1x Master Controller (with 10 inch colored touch-screen HMI LCD Display, with digital output for alarm / fan / valve control)
Display would show: gas concentration at each sensor, sensor status, sensor location, alarm status, system error, fault location etc Integrate able with BMS/ SCADA, Fire alarm system Configurable alarm threshold via touchscreen display password protected Simple English menu for configuration, with aux. power supply to sensor transmitters, wall mountable IP65 metallic / ABS fire retardant enclosure (non explosion proof), fire retardant panel wiring, 230VAC 1-phase power supply, with bench-top programming.

2. Hydrogen gas sensor/detector transmitter:
It shall be online, continuous monitoring of hydrogen in ambient air, measuring range: 0-2000 ppm H2, Electro-chemical sensor cell technology, RS485 serial interface with MobBus RTU communication, 4-20mA analog output linear proportional, anti-static epoxy coated metallic enclosure, SS 316 sensor cell enclosure with flash back arrestor and sintered filter, without on-board display & relays, 24V DC powered, response time < 15 sec, IP55 ingress protection. CESI 03 ATEX 339, ATEX II 3G EEx nAd nC d IIC T6 for Zone 2 explosion proof area; CESI 02 ATEX 084 performance certified SIL 2 HW approved EMC EN50270, EN 61000, ATEX, IECEX compliant

3. Oxygen gas sensor/detector transmitter:
It shall be online, continuous monitoring of oxygen gas in ambient air, measuring range: 0-25% v/v O2, Electro-chemical sensor cell technology, RS485 serial interface with MobBus RTU communication, 4-20mA analog output linear proportional, anti-static epoxy coated metallic enclosure, SS 316 sensor cell enclosure with flash back arrestor and sintered filter, without on-board display & relays, 24V DC powered, response time < 15 sec, IP55 ingress protection CESI 03 ATEX 339, ATEX II 3G EEx nAd nC d IIC T6 for Zone 2 explosion proof area; CESI 02 ATEX 084 performance certified SIL 2 HW approved EMC EN50270, EN 61000, ATEX, IECEX compliant

4. C2H2 (Acetylene) gas sensor / detector transmitter:
It shall be online, continuous monitoring of acetylene in ambient air (in chloride containing background gases), measuring range: 0-100% LEL C2H2, reliable infra-red sensor cell with poisoing and etching immunity, self-compensating optics, pressure and temperature measurement, isolated RS485 serial interface with MobBus RTU communication, 4-20mA analog output linear proportional, anti-static epoxy coated aluminum enclosure, SS 316 sensor cell enclosure, with back-lit LCD display, 24V DC powered, response time < 10 sec, IP65 ingress protection CSA/NRTL Class, Div 1, ATEX, IECEX, Group A,B,C,D T5 IECEx Ex d IIB + H2 T5 Gb, for Zone 1, 2

5. Silicon Chloride (SiCL4) (HCL) gas sensor/detector transmitter:
It shall be online, continuous monitoring of Silicon Chloride in ambient air (in chloride containing background gases), measuring range: 0-20 ppm SiCl4, reliable electro-chemical (galvanic) sensor cell with poisoing and etching immunity, self-compensating optics, pressure and temperature measurement, isolated RS485 serial interface with MobBus RTU communication, 4-20mA analog output linear proportional, anti-static epoxy coated aluminum enclosure, SS 316 sensor cell enclosure, with back-lit LCD display, 24V DC powered, response time < 15 sec, IP65 ingress protection AYEX, IECEX, SIL2,  CSA/NRTL Class, Div 1, Group A,B,C,D T5
IECEx Ex d IIB + H2 T5 Gb, for Zone 1, 2

6. GeCL4 gas sensor / detector transmitter:
It shall be online, continuous monitoring of GeCl4 gas in ambient air (in chloride containing background gases), measuring range: 0-20 ppm GeCl4 (calibrated against HCl), Electrochemical sensor cell technology, RS485 serial interface with MobBus RTU communication, 4-20mA analog output linear proportional, anti-static epoxy coated metallic enclosure, corrosion resistant SS 316 sensor cell enclosure with flash back arrestor and sintered filter, without on-board display & relays, 24V DC powered, response time < 15 sec, IP55 ingress protection CESI 03 ATEX 339, ATEX II 3G EEx nAd nC d IIC T6 for Zone 2 explosion proof area; CESI 02 ATEX 084 performance certified SIL 2 HW approved, ATEX, IECEX, SIL2,  EMC EN50270, EN 61000 complian

7. CL2 gas sensor/detector transmitter:
It shall be online, continuous monitoring of Cl2 gas in ambient air, measuring range: 0-20 ppm Cl2, Electro-chemical sensor cell technology, RS485 serial interface with MobBus RTU communication, 4-20mA analog output linear proportional, anti-static epoxy coated metallic enclosure, corrosion resistant SS 316 sensor cell enclosure with flash back arrestor and sintered filter, without on-board display & relays, 24V DC powered, response time < 15 sec, IP55 ingress protection CESI 03 ATEX 339, ATEX II 3G EEx nAd nC d IIC T6 for Zone 2 explosion proof area; CESI 02 ATEX 084 performance certified SIL 2 HW approved, ATEX, IECEX, SIL2 EMC EN50270, EN 61000 compliant

8. CH4 (Methane) gas sensor / detector transmitter:
It shall be online, continuous monitoring of CH4 gas in ambient air (in chloride containing background gases), measuring range: 0-100% LEL ppm CH4, reliable infra-red sensor with poisoning and etching protection, RS485 serial interface with MobBus RTU communication, 4-20mA analog output linear proportional, anti-static epoxy coated metallic enclosure, corrosion resistant SS 316 sensor cell enclosure with sintered filter, without on-board display & relays, 24V DC powered, response time < 15 sec, IP55 ingress protection CESI 03 ATEX 339, ATEX II 3G EEx nAd nC d IIC T6 for Zone 2 explosion proof area; CESI 02 ATEX 084 performance certified SIL 2 HW approved, ATEX, IECEX,  EMC EN50270, EN 61000 compliant

For more details please contact us or drop a mail to info@alviautomation.com we would be happy to serve you:)

Hydrogen Detector & Alarm – H2 Gas Leak Sensor for UPS, Battery Room Application

High Accuracy, Long Life, Advanced Technology, Catalytic Pellistor,  in Low price  Hydrogen Detector for UPS, Battery Room Application .

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

For Technical Datasheet Please Click Here 

Best CO (Carbon Monoxide) Detector & Alarms

Low Pricing, Best Technology, High Accuracy, Long Life, Carbon Monoxide Gas Detector and Transmitter .

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

GmbH German Sensor Technology

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.

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

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 ..!

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.

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

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 (Coverage Area: 465 m2 to
930 m2 “Ideal Conditions” assumed using New Gas-DO-300-D) (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 (Mount at a height of 1.5 – 1.8 m above floor) 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, Model no:GAS-CO-300-D

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

• CO gas sensor (cell) life expectancy is 6-10 years, normal operation environment.
• Fully sealed sensor cell, Gel type electrolyte not liquid type electrolyte with hydrophobic filter
• 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.
• The exchangeable sensor transmitter cartridge is our new concept to re-look on the Gas sensor and we are pleased to introduce Our most popular, most miniaturized exchangeable Carbon Monoxide (CO) sensor cartridge with cutting edge German Technology.

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.

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

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.

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.

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