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Electrochemical Sensors
Design does matter: a bigger sensor means bigger electrodes and more electrolyte, hence
faster response
higher accuracy
more stability
longer life
The smart DraegerSensor with embedded micro-chip and temperature element supports sensor recognition, numerous selftest functions, remote calibration and signal compensation over the entire temperature range of typically -40 to +65 ºC.
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Figaro Engineering Inc. specializes in the research, development, manufacturing and marketing company of gas sensors and gas detection equipment.
In 1968, Figaro Engineering Inc. became the first company in the world to develop and commercialize semiconductor gas sensors. Globally, major concerns in the fields of gas detection, air quality control, HVAC appliances, and the automotive industry have relied on Figaro Engineering Inc. for gas sensing products.
Based on its extensive and broad-based experience in developing and manufacturing gas sensors, Figaro continues to expand its expertise into new areas of gas detection.
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Simtronics is pleased to announce the put on the market of the GD1, a new generation of open path detector.
The GD1 innovates by creating a new standard of toxic gas detection. At the heart of the detector is a tuneable laser diode that eliminates environmental effects from sun, rain, and fog. The laser scans single absorption lines where there is no interference from other gases. This new technology constitutes an important progress with exceptional performances and a extreme reduced maintenance.
Unlike traditional methods for detecting H2S (MOS or EC cell), the GD1 needs no recalibration and can replace multiple standard detectors to cover the same risk. Compared to traditional detectors the GD1 offers:
• Faster detection
• Reduced maintenance
• A life calibration
• Fast acting
The GD1 is also available with a dual output gas configuration, Methane and Hydrogen Sulphide.
Supplied with worldwide hazardous area approvals. Suitable for use in SIL 2 systems.
With its level of detection lower than 5ppm and it is faster response time (T90 < 5 sec) the GD1 is ideal to ensure the personnel safety on petrochemical installations onshore or offshore or for the sites of treatment of waster water.
Furthermore, the GD1 offers real cost savings, using a single transmitter / receiver pair, the detector covers distances of up to 100 metres. Installation and maintenance costs are reduced as fewer devices are needed to cover the same risk as several point detectors.
As with all Simtronics’ products, the GD1 is designed for early detection of hazardous events. It’s built to work safely in extreme areas and withstand the hardest environments onshore and offshore.
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GfG's fixed gas detection systems are available as easy to operate single point units or as larger systems with several hundred transmitters. These multiple point systems consist of controllers and transmitters that communicate with each other. The transmitter changes the measured gas concentration to an electrical signal which is transfered to the controller. The controller shows the gas concentration in a display and immediately activates alarming devices in case of a gas leak. Advanced features such as data logging or online data transmission allow the user to easily monitor ambient changes in the environment. The Stand Alone unit is a combination of both transmitter and controller.
The transmitter's sensor is the "sense of smell" of a fixed gas detection system. The sensor is located in a metal sensor enclosure which is attached to the transmitter and converts the gas concentration into an electric signal. Electronics inside the transmitter changes this electrical signal for interference free transfer to the controller. The transmitter and the controller can be installed several 100 meters apart from each other.
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Flamgard Plus is a Flameproof (Exd) flammable gas detector, which uses poison-resistant pellistors to detect explosive levels of hydrocarbons, hydrogen and other flammable gases and vapours, including aviation fuel and leaded petrol vapours.
Features:
Non-intrusive calibration
* Calibration can be performed locally without the need for hot work permits
* Local display and magnetic key enable calibration without opening the junction box
Flexible output options
* A 4-20mA signal is provided
* Optional alarm and fault relays are available to drive local alarm devices.
Rugged and reliable
* Constructed using highly durable marine-grade alloy with a tough polyester coating
* Ingress protection to IP65 as standard, IP66 with accessory
* Uses long-life poison resistant pellistors, which are resistant to halogens, silicones and lead.
Other toxic gas detectors in the Crowcon range include:
* Xgard - available in Ex d and i.s. versions
* TXgardIS+ - intrinsically safe toxic gas detector with display
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Gas detectors E2606 are intended for air quality monitoring - control of toxic gas and oxygen concentration and prevention of gas leaks in confined spaces.
Depending on version the gas detector E2606 uses either advanced metal-oxide semiconductor or an electrochemical gas sensor. Concentration of toxic (carbon monoxide, VOC, freons, ammonia,H2S etc) gases or oxygen deficiency can be measured.
- Measuring range 0..5 %vol.
- Temperature range -20..+50 °C
- Output relay 230 VAC, 8A
- Supply 230 VAC or 24 VDC
- Diffusion, flow-through and remote sensor versions
- Visual and audible alarms, adjustable output relay
- Linearized analog output 4-20 mA
- RS485 Modbus RTU interface option for direct Fieldbus networking
- Wall-mount
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The Model TS4000H Intelligent Toxic Gas Detector continuously monitors toxic gases in the ppm range or oxygen deficiency, delivering highly accurate detection and protection. The unit features one person calibration and can virtually self-calibrate by simply activating a magnetic switch and applying gas. It provides status indication and alarm outputs.
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J. Dittrich Elektronic gas measuring systems for toxic gases and vapors determine the concentration of toxic gases and vapors in the air mixture at an ambient temperature of -10 to +50° C.
Specific electrochemical sensors measure ammonia (NH3), chlorine (Cl2), carbon monoxide (CO), oxygen (O2), hydrogen sulphide (H2S), nitrogen dioxide (NO2) and nitrogen monoxide (NO) in the ppm range.
The sensors are calibrated with the help of the respective test gas using a potentiometer; there is no or only negligible cross-sensitivity to other substances.
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MSA offers a complete range of detectors that permanently monitor for dangerous levels of toxic gases to protect personnel and the environment.
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MILLENNIUM II BASIC "SMART" GAS DETECTOR
Net Safety's next generation detector, the Millennium II BASIC is a robust, reliable, and low-cost safety solution delivering highly accurate detection and protection. Our state-of-the-art "SMART" (Self Monitoring Analysis and Reporting Technology) sensors provide a cost-effective detector solution that includes all the features you demand with complete ease-of-use and operation.
A full range of Combustible (Infrared & Catalytic Bead) and Toxic (Solid State & Electrochemical) sensors are available, all are completely interchangeable with the Millennium II and Millennium II BASIC transmitters.
* SMART Technology
* Low Cost Solution
* Market Leading Sensor Warranties
* Global Certifications - Class1 Div1 Explosion proof
* Analog, Relay, RS485 Modbus RTU, or HART communications available
* Low Power Consumption, Widest Input Power Range
* Infrared sensor technology utilizing a dual beam design with no "mirrors" that may become contaminated ("fogged up") or misaligned
* Non-intrusive, One Man Calibrations
* Visual LED Indication (full display available on Millennium II Dual Channel)
* Long Range (+2000ft.) Sensor Separation
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Gas detection : O2, H2S, NH3, CO, NO, NO2, H2, SO2, Cl2, HCl, HCN…
The modern technologies used offer a high resistance to the humidity and temperature compensation as well as stability over time. In order to meet every requirement, SIMRAD Optronics ICARE proposes two different detection technologies :
• Electrochemical cells enabling a wide detection range and excellent selectivity.
• Semi-conductor cells providing extended detector lifetime.
The interchangeable and removable cartridge along with the wall mounting,
independent from the electronic housing, make this detector particularly simple to use.
• NH3 detection, low temperature
To meet needs of cold chains, a low temperature version enables detection down to -40°C.
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Dräger's product range covers a wide variety of types: electrochemical, catalytical or infra-red IR sensor technology point or open path detection intrinsically safe or explosion proof analog 4 to 20 mA, digital HART or RS 485 signal output with or without local display with or without on-board relays low budget or high end equipment Your local representative will gladly help you determine the right product for your application.
Dräger Polytron 7000
Modular design – highly flexible: The universal transmitter Dräger Polytron 7000 measures toxic gases and oxygen and can be optimally adjusted to the most different applications.
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The Tocsin 103 series of gas detectors are designed for cost effective safe area gas detection solutions. They incorporate micro processor technology to give a stable 4-20mA process signal output or digital addressable output. The addressable output option allows detectors to be networked on a single cable run giving dramatic reduction in installation costs. The in built processor can be used to pre-calibrate the sensor prior to installation. Alternatively calibration can be achieved on site via the Oliver IGD control panel or locally using a handheld PC device or laptop. A range of sensing technologies can be incorporated into the housing to provide the most appropriate detection method.
ATEX VERSIONS (TOCSIN 102) AVAILABLE
Available sensor types include
IGD’s own MKIII and Type B Pellistors,
Infra Red
Electrochemical Devices
Gas Detected Include
Flammable Gases
Carbon Dioxide
Carbon Monoxide
Nitric Oxide
Nitrogen Dioxide
Hydrogen Cyanide
Chlorine
Hydrogen Sulphide
Ammonia
Oxygen
Sulphur Dioxide
Hydrogen Chloride
ATEX VERSIONS ALSO AVAILABLE
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The Model 128 is a wall mounted gas monitor designed for reliable gas detection, easy installation and low total cost of ownership. The Model 128 is a cost-effective solution for warning of unsafe gas levels in areas such as semiconductor manufacturing, wastewater treatment, garages, warehouses, toll booths, gas bunkers, utilities, and telecommunications industries.
The Model 128 accepts from one to eight combustible, oxygen and/or toxic sensors. Each sensor provides a digitized output, allowing easy and economical networking of multiple sensors.
Features:
- Unique built-in calibration reminder
- Auto-Install feature simplifies set up
- Easy plug in electrochemical sensor replacement
- Reduces installation cost through digital communication
- Sensors can be factory configured or configured in the field
- 19 different sensors available
- Super bright LED array provides quick indication of normal, fault and alarm conditions
- Loud audible alarm (98 dB)
- Combustible gas sensors are mounted in an explosion proof housing
- Outstanding protection from EMI/RF interference
- Non-intrusive calibration for combustible sensor
- Intrinsically safe oxygen and toxic gas sensors available
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The RAID-S2 is a gas trace detector for the detection of chemical warfare agents (CWA’s) and toxic industrial chemicals (TIC’s). It is based on proven Ion Mobility Spectrometry technology. The RAID-S2 is specifically designed for long-term operations in a 24/7 environment
with preventive maintenance required only once a year. It is ruggedized for military and civil defence environments.
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INFICON offers the only man-portable, gas chromatograph/mass spectrometers (GC/MS) proven to provide verifiable data for critical life and death decisions. HAPSITE Smart Chemical Identification Systems deliver fast, dependable on-site analysis of VOCs in air, water, and soil for emergency response, environmental, hazardous waste, industrial hygiene, process monitoring, and medical applications. The HAPSITE Headspace Sampling System supports the HAPSITE Smart Chemical Identification System in detecting and identifying VOCs in water or soil on-site or from another location.
Features at a Glance:
- Results when and where you need them
- Loop or microtrap injection for low detection limits
- Temperature-programmable GC for a wide range of detectable analytes and short analysis times
- Results directly comparable to laboratory analysis
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