Computers & Controls


supports the retina display feature of the iPhone 4 and iPod touch fourth generation. ProSoft i-View works in conjunction with the industrial


hotspot series of radios or industrial cellular series. Cumulative security features are offered by these industrial grade wireless solutions, as well as the iPhone/iPad/iPod touch devices themselves, to prevent unauthorised access to the network. ProSoft Technology’s industrial hotspot radios feature WPA2-PSK and 802.11i RADIUS security, which prevent unauthorised access and modification to the network. For plant engineers, this solution enables: live monitoring


of process data to engineers and plant floor operators; secure remote monitoring and modification of live process data; and real-time alarm management.


Pipeline monitoring Sinopec’s Zhenhai refinery is one of the biggest ethylene projects in China with 23,000,000 t/y oil refining capability and 1,000,000 t/y ethylene producing capability. The refinery has implemented Honeywell’s OneWireless


solutions to measure temperature along its 7.6km pipeline and gained several benefits including: real-time temperature measurement; efficient wireless network management; time and cost savings; and an ability to easily add new wireless measurement points in the future. The pipeline was put into operation in February 2010. Its


operation temperature environment is around -100°C. The low temperature tank farm is one of the associated facilities, supporting material feeding for the ethylene downstream facilities, and supply/demand buffer among the equipment, such as ethylene low temperature tank farm, propylene low temperature tank farm, refrigeration system and product transport system. The measurement points are located at every kilometre


along the pipeline. With a wired approach, the customer would need to lay a large amount of cable, cable tray and conduit, and power supply installation would be very difficult. So the customer selected Honeywell’s OneWireless solution, which does not need any cable, wire, junction box or cabinet, and offers quick and efficient installation. Honeywell’s OneWireless solution was applied to measure


the temperature of the 7.6km pipeline between the deck and low temperature ethylene tank farm. The pipeline is made of 304 carbon steel and will be operating under the temperature


environment of -150 to -100°C with 325mm diameter and 4.5mm wall thickness. By measuring the real-time temperature data, the operator can ensure smooth operation of the pipeline and avoid incidents. The temperature data is integrated into the low temperature tank farm control system, supporting real-time monitoring. Honeywell provided three multi-nodes, five wireless


temperature transmitters and one wireless platform for this project. The five wireless transmitters were mounted along the pipeline (five metres above ground). The three multi-nodes were mounted on the roof of the tank farm control room, one kilometre from the control room and 700 metres from the deck, communicating with each other to form the self- organising and self-heating mesh wireless backbone network. The multinode located on the roof of control room acted as a gateway and wired into the tank farm control system through standard Modbus RS485 communication protocol to support data integration. The OneWireless platform was installed in the tank farm


control room, supporting online wireless network status monitoring and diagnostics, wireless transmitter configuration and calibration, and wireless network security. Finally, the latest offering from ELPRO is its 915U-2


wireless mesh, whose gateway functionality provides reliability of secure, scalable, mesh distance communications. Featuring ELPRO WIBMesh technology, the 915U-2


IP based addressing provides mesh/self-healing of network communications, multi-hop repeating and remote over the air re-configuration and diagnostics. The 915U-2 is further complemented by its ease


of commissioning and integration into existing plant infrastructure. Its features include: 902-928MHz, FHSS, IP based,


wireless mesh technology to 115 kbps; self-healing, repeatable, secure communications to 128bit AES ; user-friendly operation with self discovery of radio path and expansion I/O; remote over the air re-configuration, firmware upgrade and fault analysis; scalable, simple to complex, point to multipoint network design; gather-scatter/block mapping technology for ease of system integration; cost-effective gateway functionality via feature key upgrade; and system- wide view, localised I/O referencing, and printing/exporting of configurations. Country specific sub-bands options are also available. ■


Robust, wireless, Ethernet video surveillance A


vaLAN Wireless Systems, provider of outdoor long range industrial wireless Ethernet products, has announced a set of 5.8GHz long range wireless Ethernet solutions. This new product line allows users to build line-of-sight, point- to-multipoint wireless Ethernet connections which link ‘fringe’ IP devices such as video surveillance cameras or other devices needing robust and secure high data rates. The radios are packaged in rugged and


weatherproof die cast aluminium enclosures and are available in both directional and omnidirectional antenna configurations. The 5.8GHz unlicensed band allows a maximum of 4 Watts EIRP in point-to- multipoint configurations for maximum range and interference penetration.


The directional flat panel antenna version provides 23 dBi gain and is intended to serve as a subscriber unit.


The omnidirectional unit provides 9 dBi


gain in the horizontal plane and is designed to serve as the common access point. The flat panel antenna radios are also available as a pre-configured matched pair bridge (AW5800HTP-PAIR) for point-to-point fixed connections. This new, long-range 5.8 GHz wireless Ethernet solution is designed for applications that require higher data rates up to 5 Mbps and is ideally positioned to support IP-based megapixel surveillance cameras. ■


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