Gas Detection 7
Versatile, high-performance gas detection with easy deployment There are many prerequisites
when it comes to gas detection, not least maximum fl exibility, increased performance and minimal installation costs. Add in modern expectations such as smart features and the ability to detect explosive, toxic, or asphyxiant gases, and the list of potential solutions soon becomes short. Prominent among the choices, however, is the proven and increasingly popular iTrans 2 fi xed gas detector from Teledyne Gas & Flame Detection.
Offering smart sensor capabilities that
support an intelligent electronics platform, the iTrans 2 provides one or two points of detection from a single head for maximum fl exibility, with both readings shown on the standard-issue, LED and display. Gas sensors are mountable directly to the transmitter, or remotely. For the detection of explosive and toxic gas, or oxygen, the iTrans 2 accepts infrared, catalytic bead or electrochemical sensors. Specifi cally, in addition to the LEL (lower explosive limit) sensor range, the iTrans 2 is confi gurable with a 0-100% volume methane infrared sensor for bio-gas applications and CO2
infrared
sensors ranging from 0.5% to 100% volume. All are pre-calibrated using smart technology to enable automatic sensor recognition and data transfer. The device displays sensor life data automatically after each calibration.
Offering cable-saving and time-saving installation, the iTrans 2 is suitable for almost any application via common confi gurations that include 3-wire (4-20mA) and 4-wire (digital ModBus) models. Both allow for full utilisation of the gas detector’s features and options, and use with all iTrans 2 sensors. iTrans 2 offers analogue 4-20mA and digital RS-485 Modbus (9600 baud) outputs. The HART communication protocol is optional, enabling remote communication across the 4-20mA signal for diagnostics, commissioning and calibration. A simple magnetic wand further aids ease of use by allowing full transmitter confi guration and calibration without opening the explosion-proof housing.
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New hydride long-time gas sensors with ionic liquids
Sensorix is introducing its Long Time (LT) gas sensors with ionic liquids, the Satellix Hydride LT sensors. In this article, you will fi nd key information about ionic liquids and the benefi ts of using them in gas sensors in contrast to an organic gel electrolyte.
Until now, Sensorix could only offer Satellix hydride sensors with an organic gel electrolyte. These sensors are perfectly suited to selectively detect low concentrations of hydrides with a fast T90. However, their electrolyte contains a high- boiling organic solvent that evaporates very slowly and irreversibly from the sensor.
In most environments, the gel sensors will reach 18 months of operating life as stated in the datasheet. However, evaporation accelerates with increasing temperatures and wind speed. There are environments where organic gel hydrides may not reach their full life expectance. This is often the case if the sensors are installed in ducts or exhausts which are widely used in the semiconductor industry.
“Especially for such applications, sensors with ionic liquids as electrolyte are the perfect solution, as the organic ionic liquid does not evaporate”, explained Andreas König, the General Manager of Sensorix GmbH.
An ionic liquid (IL) is an organic salt that is in its liquid state within a wide range of temperatures, at or below room temperature. Due to their very low vapour pressure and high thermostability, ionic liquids are suitable for use as electrolytes in gas sensors such as Satellix.
While having practically the same performance level as gel sensors in terms of baseline, detection limit, T90 and selectivity, the sensor’s lifetime, even under harsh environmental conditions, is considerably longer and will always reach the 18 months stated in the datasheet.
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www.euro-gasman.com
Your fast track to quality gas sensor solutions
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Residential • Car Park Monitoring • Fire Detection Air Quality • Breath Monitoring • And More!
Euro-Gas gas sensors and circuitry offer unique features and potential advances for end product performance, ensuring cost effective, high quality solutions for detection equipment manufacturers and system installers.
Are you looking for gas sensors for new instrument development? Or a complete prebuilt and precalibrated circuit board ready to install into your own housing, with voltage, current or digital output? A wide range of gas sensing options is available for different measuring ranges and applications - from gas sensors and circuit boards to installation kits and housing.
For example, Carbon Monoxide (CO) monitoring in car parks, residential and fi re detection systems can specifi cally benefi t from our low cost two-electrode CO sensors. Guaranteed to operate continuously for over fi ve years, these sensors are a revolutionary, high performance electrochemical design. Such sensors can actually exceed lifetimes of 10 years in residential environments and are available as a single sensor or with circuitry to provide 4-20mA or digital output. Euro-Gas also offers a TÜV approved package for Carbon Monoxide detection, with conformity to VDI 2053 Standard, developed for underground car park gas detection. This can be purchased as a circuit solution or as a complete fi xed gas detector.
Wide range of advanced quality gas sensors Current, voltage & digital circuitry options Installation, test kits & housing accessories
Unique sensor solutions to help your business build fi rst-class and cost-effective products
For medical applications, low Hydrogen cross-sensitive CO sensor models are available for the detection of Carbon Monoxide in air. The primary application of these sensors is for breath measurement, where Hydrogen presents an issue as a cross-interferent. Our sensors are at the heart of monitoring instruments in ‘stop smoking’ programmes worldwide.
The latest Carbon Dioxide (CO2
for portable and battery powered instruments. Dual beam infrared is at the core of our housed CO2 and air quality monitors, including our newest traffi c light indoor environmental system.
) infrared sensors deliver speed and low power consumption at 3.5mW; ideal industrial
Gas sensor solutions are also available for Hydrogen, Oxygen, Hydrogen Sulphide, Nitrogen Dioxide, fl ammable and more exotic gas monitoring. New miniature digital i2c and voltage circuit boards are now optional for all of our two- and three-electrode 4 Series and Micro sized gas sensors.
Euro-Gas sensors and accessories suit a wide range of applications, including health & safety, air quality, HVAC, automotive, process control and more. Euro-Gas is also a worldwide specialist in personal gas detection equipment and product ranges are showcased at:
www.euro-gasman.com.
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We put the sense into gas sensors!
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At Sensorix, you can currently fi nd the following long-time stable Satellix hydride sensors:
Gas Sensor Gel Electrolyte LT Electrolyte Satellite XT
Part Number
Arsine (AsH3) 0.03-1.00 ppm
Diborane (B2H6) 0.05-1.00 ppm
Germane (GeH4) 0.1-5.0 ppm
Hydrogen Sele- nide (SeH2) 0.05 - 5.00 ppm
Phosphine (PH3) 0.05 - 1.00 ppm
Silane (SiH4) 1.0 - 50.0 ppm
9602-6001 9602-6200 9602-6900 9602-5600 9602-6101 9602-6300
Satellite XT Part Number
9602-6004 9602-6202 9602-6202 9602-5601 9602-6102 9602-6301
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