4
Gas Detection
monitoring the area to ensure that its atmosphere remains safe. If a hazardous atmosphere is identified at any point, the operator must leave the area immediately, re-evaluate the space and take corrective measures.
Ensure you have the right equipment to do the job
A 4-gas portable detector like GasAlertMax XTII by BW Technologies by Honeywell, which is
capable of monitoring CO, H2S, combustibles (%LEL) and O2 depletion with integrated pump and sample hose supplied as standard, is the ideal solution for confined space entry.
When additional industry specific gases are likely to be present a 5-gas monitor such as GasAlertMicro5 from BW Technologies by Honeywell is an ideal choice, because it provides one further sensor and supports a wide range of additional gases.
AUTHOR DETAILS Gem Bayless
Communications Specialist BW Technologies by Honeywell United Kingdom Tel: +44 (0)1295 700 300 Fax: +44 (0)1294 700 301 Email:
bwesales@gasmonitors.com Web:
www.gasmonitors.com Depending on the type of area being
accessed, you may also require additional specification such as water resistance; particularly important for locations like sewers where water is likely to be present.
Because space can be limited, it can be advantageous to have both hands free to undertake the sampling, so a carrying holster which can also accommodate the sampling hose can help to simplify pre entry checks.
While working in the confined space, the portable detector can be clipped to clothing (usual fastening is a crocodile clip), allowing hands to remain free to do work required in the area, whilst continuous monitoring is taking place. Additional ways of using the device hands free include the use of neck straps, armbands or hard hat clips.
Make sure your equipment can keep you safe with bump testing
Workplace environments can be harsh and gas detectors can be subjected to all kinds of conditions that can affect their operation. The only way to guarantee an instrument will detect gas accurately and reliably is to test it with a known concentration of gas.
Exposing the instrument to test gas will show whether the sensors respond accurately and the instrument alarms properly.
The instrument reading is compared to the actual quantity of gas present, as indicated on the cylinder. If the instrument's response is within an acceptable tolerance range of the actual concentration, then its calibration is verified.
One way to help simplify mandatory bump testing requirements is to use an automatic test station like MicroDockII from BW Technologies by Honeywell; this device works with all of BW Technologies by Honeywell’s portable gas detection range, providing simple, one button bump testing in less than two minutes. MicroDockII is designed to conform to the most advanced legislations and provides a simple solution to portable device safety. Because of its simple docking facility and easy operation, MicroDockII also helps to reduce the training needed to carry out bump testing, helping to provide cost-savings on the ongoing cost of portable gas detection.
The World’s Lowest Power Consumption NDIR CO2 Sensor
The new NDIR CO2 sensor from Gas Sensing Solutions (UK) has instantaneous power up time with world’s lowest power consumption at 3.5mW (continuous operation). The sensor offers fast power up/down, enabling power consumption reduction to micro watt level. GSSL patented NDIR sensor configuration
is based on unique mid infra red light emitting diodes and photo diodes, tuned to CO2 gas absorption wavelength. Product is provided in two sensor ranges: ambient range 0-2000ppm, 0-2% and wide range, operating options 0-5%, 0-20% & 0-65% and 0-100%.
- 25o
The sensor can be operated with battery (3.3V) or photo voltaic. Standard Operating temperature 0o C to +55o
C to +50o C. Extended Operating Temperature C. Other sensor options include temperature, humidity and day/night. Digital output is standard but other options are available. Reader Reply Card no 12
Behind Worldwide Calibration
Calibration and test gases play a crucial part in every day gas detection. Check gases are key to calibrating instruments at regular intervals and most importantly, verifying the functionality of portable gas detectors. Across the globe, manufacturers, distributors and end customers utilise Euro-Gas cylinders to protect the safety of personnel.
Extend your Company’s Product Portfolio
If you purchase calibration and bump gas from an equipment manufacturer or distributor, you may already be using one of the extensive ranges of gases available at Euro-Gas. A significant number of Euro-Gas worldwide clients take
advantage of a complimentary labelling service to extend their own portfolio of products, with the knowledge that they have the experience and technical support of Euro-Gas behind them.
Gas cylinders can be privately labelled with your own Company logo and contact details. Euro-Gas offers this option as a free of charge service and has a dedicated, friendly team on hand for technical and marketing assistance.
Providing quality and cost effective solutions to the problems of industrial and environmental safety worldwide, Euro-Gas specialise in the supply of:
• Calibration and test gases
• Komyo Kitagawa Gas Detector Tube System • Advanced OEM gas sensors and circuitry
www.euro-gasman.com Euro-Gas Management Services Ltd, Reader Reply Card no 13
Revelstoke House, Stoke Road, Noss Mayo, Devon, PL8 1EY, England. Tel: +44 (0)1752 872222 Fax: +44 (0)1752 872223
Website:
www.euro-gasman.com Email:
euro-gas@btconnect.com
Regular functional testing and calibration is easy and low cost with lightweight, non-refillable cylinders. The perfect sizes for bump testing of equipment are 20 litre and 34 litre cylinders. For regular calibration, 34 litre, 58 litre and the new Euro-Gas 110 litre cylinder, which conforms to the important European Legislation EN12205, provide more gas in a convenient size and at low cost. Out in the field, non-refillable cylinders are ideal where portability is paramount. Where larger quantities of gas are required, Euro-Gas refillable cylinders offer an alternative.
All the latest information, together with downloadable datasheets, can be found at
www.euro-gasman.com.
Reader Reply Card no 14
IET
November/December 2010
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