with the compliments of EPM solutions Ltd
factsheet ISSUE 13
Handheld Technology in Hazardous Environments HANDHELD TECHNOLOGY AND ITS ASSOCIATED APPLICATIONS CAN HELP OPTIMISE PROFITABILITY AND EFFICIENCY THROUGHOUT INDUSTRY – PARTICULARLY WITHIN HAZARDOUS ENVIRONMENTS, WHERE EMPLOYEE SAFETY IS KEY. THIS FACTSHEET PROVIDES A USEFUL GUIDE TO THE APPLICATION OF HANDHELD TECHNOLOGY IN INDUSTRY AND CONSIDERATIONS FOR USE.
Handheld technology and its applications
Mobile computing and the accuracy and time saving benefits the technology provides have an increasingly important role in the industrial workplace. Because of growing safety, security, regulatory and reporting requirements, asset intensive organisations are implementing more sophisticated systems to monitor and manage a variety of work environments, particularly in maintenance management, stock control, storage and transportation of potentially harmful goods.
RFID and barcode scanning
Radio Frequency IDentification (RFID) comprises wireless data transfer on the physical basis of electro-magnetic alternating fields. A RFID system consists of a transponder and a mobile or stationary write/read unit with antenna. Transponders feature a micro chip and a coil/antenna in different casings (plastics, glass, coins, key holders, smart label) and work within different frequency ranges. Barcode reading devices work in two different ways. Laser scanners record barcodes by means of a reading line. This is more than sufficient for one-dimensional codes, since one line contains all information. Following the introduction of two-dimensional codes, laser scanners were improved using deflection mirrors to create a second scan line that is generated at a certain angle. This technology makes it possible to read stacked two-dimensional codes. The second type of device is called an ‘area imager’. Integrated picture record modules record the barcode as if taking a photo. Software algorithms are then applied to find the barcode area within the picture, to recognise type and turning position and finally to identify the bar code. This makes it possible to read matrix codes as well.
Potential challenges of mobile technology in hazardous environments
Asset management and tracking is a significant problem in hazardous environments. In some cases, mistakes in identifying correct information about an asset can lead to a shutdown situation to re-certify equipment. Mobile computers can be important components in asset management and tracking in hazardous environments, because they provide the ability to automatically collect and communicate data from remote and challenging environments.
Hardware solutions
A number of devices suitable for mobile computing solutions in hazardous areas are currently available on the market. BARTEC offers a number of compact units for safe barcode and RFID scanning in hazardous areas and is available in a number of versions for different zones – in particular, the 420, non-incendive 520 -Ex and intrinsically safe 620 -Ex with Ex certifications. Featuring real time data access, WLAN radio technology IEEE 802.11a/b/g, Bluetooth and additional memory with a SD card, BARTEC’s solutions also offer the options of RFID read/write modules for different frequencies and modules for collecting barcodes using 1D Barcode Laser or 2D Barcode Imager. The range also features a number of accessories suitable for use in hazardous areas, including holsters, access points and additional batteries. In addition, ecom instruments offers a range of mobile computing solutions specifically engineered for use in hazardous environments with appropriate certification. By using mobile computers, the accuracy, cost and time saving benefits of mobile computing will be achievable in potentially hazardous environments. However, confusion over regulations and certifications has led some companies to incorrectly conclude that mobile computers and associated technology, such as RFID and wireless communications, cannot be used in environments where combustible gases and liquids are present.
Clarification of terms
Much confusion centres on the terms ‘intrinsically safe (I-safe)’ and ‘nonincendive’ which have different meanings. For companies who handle potentially dangerous goods, I-safe and non-incendive standards apply to all equipment that can create one or more of a range of defined potential explosion sources including: electrical sparks, flames, hot surfaces, static electricity, electromagnetic radiation, mechanical impact, acoustic energy, and ionizing radiation. Non-incendive designation means the device does not generate sparks and is incapable of igniting gases, vapours or liquids under normal operation. Non-incendive devices are not necessarily sealed against gases, vapours or liquids. Intrinsically safe (I-safe) indicates a higher level of safety and protection. Devices designated as I-safe will not spark or cause ignition of an explosive environment. Recently, there has been a substantial focus on intrinsic safety, with the European Union’s ATEX regulations taking the lead for requiring I-Safe devices in potentially explosive work areas. For the rest of the world, guidelines – like the National Electrical Code NEC-500 – are in place, but are not mandatory.
The ecom i.roc x20 (-Ex) mobile computer is an industrial PDA based on Windows Mobile with compact external dimensions, an integrated WLAN, USB, Bluetooth and an IrDa port. It is available in three model types – 420, non-incendive, 520 -Ex and intrinsically safe 620 -Ex with Ex certifications. The range can also be customised to client specifications and features a number of add-ons and accessories. Whatever the size and type of business, mobile computing offers opportunities to optimise production flow and data transfer. By educating management on the application of process control technologies suitable for use in hazardous environments, customised and wisely applied solutions can detect and utilise these opportunities, helping to make any business more profitable. If you would like further information on this subject or other compliance and regulatory issues, please contact EPM on 0141 848 6609.
Uses and applications
I-safe mobile computing devices are ideal for applications in areas where workers handle unstable or dangerous goods, such as employees loading and unloading fuel at service/petrol stations, monitoring gas flow and instrumentation on a gas pipeline and managing inventory of fuel products in a warehouse. The emphasis on I-safe mobile computing devices has led to the development of a range of ruggedised solutions which satisfy requirements and maximize efficiency without compromising user safety. By taking a systematic and future-proof approach to managing mobile computers and wireless networks, and understanding safety certifications, asset intensive organisations will be able to specify devices with the right level of safety for each area within their enterprise. The results of this kind of approach will be a lower total cost of ownership, simplified device management and support, and a safer, more productive work environment.
EPM Solutions Ltd., Abbey Mill, 1010-1012 Mile End, Seedhill, Paisley, PA1 1TJ. T. 0141 848 6609 F. 0141 848 7749 E. info@epmsolutions.co.uk www.epmsolutions.co.uk © 2008 EPM Solutions Ltd. EPM Solutions endeavours to ensure that the information in this factsheet is up to date and accurate. However, where concerned you are advised to consult with the appropriate bodies for further details. Designed & published by the marketing cafe T. 0141 644 1777