36 Gas Detection
Gas Detector Awarded CE Mark Certification
Detcon’s (USA) Model DM-100 low power gas detector recently received CE Mark certification to ensure compliance with European Union health and safety requirements. The durable, high performance gas detector underwent stringent conformity assessment testing by third-party agency Professional Testing Incorporated and is now approved for use in Europe and other countries that require the CE Mark.
The Model DM-100 is two-wire loop powered with display and uses electrochemical sensor technology to monitor a wide range of toxic gases. The device features electronics that are fully encapsulated in an electro-polished 316 stainless steel housing and a newly designed lower housing that has been upgraded from plastic to stainless steel. Plug-in field replaceable sensor cells are fitted with large surface area gold-plated pins that help reduce the effects of corrosion in harsh industrial environments.
Model 100 sensors provide a linear 4-20mA signal and feature intelligent electronics and comprehensive fault diagnostics. The device is extremely simple and affordably priced, and can be customised with additional accessories that include wireless
communications, a loop-powered digital display, Remote Alarm Module (RAM), HART, and a Modbus RS-485 interface.
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Multisensor Systems Ltd (UK) have announced the successful deployment of the MS1100-ATEX VOC and Hydrocarbon Monitor System, designed for ATEX Zone 2 environments.
MS1100-ATEX is an event monitor, providing alarms at user set levels to provide protection from the build-up of harmful or explosive substances in the atmosphere or in water. Alarms can be used locally to drive either visual or audible devices and continuous monitoring can be implemented via a 4 – 20mA loop output.
The new product, a derivative of the successful MS1100-SYS, conforms to the requirements of Ex II 3 G Ex nA IIC T6 Gc and Ex II 3 D Ex tc IIIC T85oC Dc IP65.
The instrument is housed in an ATEX Zone 2 compliant stainless steel enclosure and uses advanced gas sensing technology and signal processing in detecting gases or volatiles in a sample tank, drain or from the environment. The MS1100-ATEX is sensitive to low parts per billion (ppb) concentrations and its wide dynamic range allows it to be used in a wide variety of applications.
Unlike other methods of measuring VOCs the Multisensor range of systems do not require laboratory facilities nor do they employ any chemicals in implementation. This reduces running costs, servicing requirements and operator input, saving both time and money. Requiring less than 25W in normal operation the system uses a single phase 90 – 240V AC or 24V DC power supply.
Multisensor Systems Ltd is a privately funded developer and supplier of highly sensitive instruments for the detection of environmentally harmful contaminants in water and air. Using a variety of different sensor types the company designs signal processing and interfacing hardware and software, to provide cost effective solutions to monitor and protect a variety of clean and waste water installations, conduct air monitoring and detect harmful organic chemicals.
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Smart IR Electronic Module Launched
SGX Sensortech (UK), specialist designers and manufacturers of gas sensors and x-ray detectors, has launched an advanced electronic module – a move that will provide its customers with a higher level of sensor.
It provides users with a simple method of incorporating an SGX infrared sensor into their gas detection instrument, significantly reducing the development time and expertise required during the design phase.
Developed at SGX’s Industrial Gas Sensor division in Chelmsford, UK, the Smart IR features the necessary electronics and embedded software to send the linearised and temperature compensated concentration via digital (32-bit) and analogue (14- bit) outputs.
Other key features of the Smart IR include: full fault diagnostics; gas sensor temperature monitoring; operational from a low voltage DC power supply and configuration unit and PC software for easy control, evaluation and sensor calibration.
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10-Year Life Carbon Monoxide Sensor
Nemoto Sensor Engineering Co. Ltd (Netherlands) have announced the launch of a new electrochemical Carbon Monoxide gas sensor for use in residential (home) gas detectors, combined sensor type fire detectors, and air quality monitors. The sensor benefits from a warranted 10-year lifetime when used in a residential or light commercial environment, and the advanced, 3-electrode design of the NAP-508 ensures compliance with all relevant standards for CO detectors such as UL2034 and EN 50291 at low cost.
Nemoto's porous electrode technology results in excellent overall signal stability, whilst the compact, low-profile (only 8mm high) design of the NAP-508 is the result of an innovative electrolyte management system, which ensures the device will be leak-proof throughout it’s working life.
To assist the detector designer, the NAP-505 is supplied complete with its own PCB sockets, often a costly extra component to buy, and the device may be soldered directly to a PCB as any other component, further enhancing the manufacturing cost effectiveness and convenience of the NAP-508.
AET August / September 2013
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