xii UK Focus - Gas Detection Considerations for Buying a Single Gas Detector


Portable single gas detectors are used for personal protection and have the ability to detect a single gas hazard. Typically they are small, lightweight and robust. These devices are generally worn directly on the worker’s clothing or attached to Personal Protective Equipment (PPE), close to the worker’s breathing area.


Single gas detectors continuously monitor ambient air. When the gas concentration exceeds a pre-set alarm event on the device, it will alarm (by visual, audible and/or motion). This allows workers to react directly to risks.


a1-cbiss stock a range of single gas detectors designed to meet the various clients’ requirements. Low cost gas detectors are available for those who need basic gas detection up to more advanced, higher cost detectors for those who have strict safety programs.


There are many product attributes to consider when purchasing a single gas detector. Some will be more relevant than others. It all depends on your personal preference or what your application demands. We’ve explained the main attributes which should help you to fi nd the most appropriate single gas detector.


a1-cbiss have created a buyers’ guide which guides you through the important product attributes to consider when buying a Single Gas Detector such as classifying the types of single gas detector, understanding the relevant product features, product recommendations and single gas detector comparison guide. 37516pr@reply-direct.com


New Digital Detector Announced


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H10


The OLCT 10N, from Oldham, is a digital detector designed for commercial or industrial use in ATEX zone 2 environments or areas without explosion hazard classifi cations.


Designed to detect explosive gases (CH4 C4


), toxic gases (CO, NO, NO2 0-5% vol. and 0-100% vol.


Associated with the MX43 controller, the OLCT 10N makes electrical installation easier with a fi eldbus network that allows for up to 30 detectors to be connected on the same line!


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34911pr@reply-direct.com , H2 , H2 , C3 S and NH3 H8 ) or


oxygen, the OLCT 10N now includes an infrared sensor for detecting CO2


in three different ranges: 0-5000 ppm, and


Portable Gas Detectors for Confi ned Spaces


The Multi Gas Clip Pump (MGC Pump) portable multi-gas detector, from Gas Clip Technologies, is perfect for attendant applications in confi ned space entry. Low-power photometric technology allows the MGC Pump-IR to run a full 5 days without having to recharge the battery and only requires calibration in six month intervals. MGC Pump-IR utilises infrared sensor technology for the detection of combustible gases and electrochemical sensing technology for H2


S, CO and O2 . The Multi Gas Clip Pump is compact, ergonomic and easy to use with one button operation.


Gas Clip Technologies will be exhibiting at National Safety Council Congress & Expo, booth 2167, A+A, stand 6/H08 and ADIPEC, booth 7346.


Gas Sampling Monitor with Internal Pump and Sensors


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The GSM-60, from Enmet, is a microprocessor-based gas monitor especially designed for use in industrial process, aerospace, pharmaceutical and semiconductor applications. The system incorporates an internal sample draw pump and gas sensors. The instrument can be custom confi gured with both internal and external sensors for monitoring a combination of gas parameters including VOCs, dew point, oxygen and CO, or a number of other target gases including O3


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, HF, HCl , Cl2 , etc. As an


IS YOUR GAS DETECTION SYSTEM OUT OF TOUCH?


Maybe it should be! Traditional LEL sensors detect combustible gas by oxidizing it on an active bead that is heated to a very high temperature (550°C). The sensor can only detect the gas that touches the bead! The bead is protected by a flame arrestor that slows molecules from entering the sensor, causing the sensor to underestimate the true concentration for many gases. Traditional LEL sensors are also vulnerable to sensor poisons. A small “touch” of silicone vapor is enough to kill the sensor. Because they lose sensitivity so easily, catalytic LEL sensors need to be tested and adjusted on a regular basis.


The IR-29 from GfG delivers a remarkable improvement over catalytic LEL sen- sor technology! The infrared sensor in the IR-29 cannot be poisoned, does not lose sensitivity, is much more stable, and requires less frequent calibration ad- justment.


Because it‘s intrinsically safe there is no need for a flame arrestor that slows or reduces response. The IR-29 is also much more accurate. Our unique, patented “four lambda” infrared measurement technology allows you to take measure- ments at up to four different wavelengths, to provide the most complete picture of total combustible gas. The IR-29 ensures early, accurate detection, plus, simultaneous prevention of false alarms through the broadband measurement of percent LEL hydrocarbons.


GfG provides a complete system solution for your monitoring needs. Our new GMA 200 family of programmable logic controllers satisfies the highest demands of flexibility, reliability and economics. The GMA 200 includes comprehensive, easy to program outputs and relays, and datalogging is standard. The SIL 3 Certified GMA 200 can control up to 16 transmitters, with 8 standard, and an optional, further 64 programmable relays. The GMA Gateway module allows in- tegration of system information directly into a company’s own ITnetwork. Critical information is available immediately wherever you need it the most.


option, this versatile monitor can also be connected to a wide range of remote 4-20 mA toxic or combustible gas sensor/transmitters.


Single Gas Monitor Offers Industry-Leading Features


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Gas Measurement Instruments’ new maintenance- free PS1 Series single gas monitor is designed with industry leading features. Both lightweight and easy to use, the device offers sensor options for monitoring hydrogen sulphide, oxygen, carbon monoxide, or sulphur dioxide.


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The PS1 self-monitoring device features on/off capability and fi eld adjustable alarm settings. During hazardous conditions users are alerted via three alarm functions: vibration, red fl ashing LEDs and audible buzzer. The instrument is fi tted with a robust stainless steel alligator clip that attaches easily onto a collar or vest, putting the instrument near the breathing zone for maximum protection and safety.


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www.gfgeurope.com


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Worldwide Supplier Of Gas Detection Solutions


Also available is the new PS1 auto bump and calibration station that provides a fast visual indication that an instrument is calibrated correctly, thereby improving compliance, record keeping, effi ciency, and accuracy. Easy to operate, simply place the PS1 into the cradle and close the door. Calibration is complete in 90 seconds and bump testing in 60 seconds. The unit requires minimal effort by users.


4903ad@reply-direct.com IET January / February 2016 www.envirotech-online.com


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