Safety New Universal Transmitter Simplifies Installation and Reduces Costs


Honeywell (UK) have announced the EMEAI launch of XNX, a highly flexible, universal gas transmitter that can be used with any of Honeywell Analytics’ range of gas sensor technologies. XNX helps to simplify installation and reduce costs by providing all the industry standard output signals, enabling users to have a single interface to all their gas detection needs; even when different types of detectors are employed to address the different gas detection applications on site.


The most effective gas detection systems often employ a variety of detection technologies including point flammable detectors (both catalytic and infrared type), toxic and Oxygen electrochemical cell type detectors and open path infrared detectors. XNX provides a common transmitter interface to all of these and can be configured to provide all industry standard signal outputs to match the individual requirement of each application or the preferred site standard. The device is optimized for adaptability with a future-proof design that allows other output modules to be fitted as new output standards are developed and adopted by industry.


XNX can further reduce both installation and ongoing costs by providing common tools, common interface and common spare parts, allowing the device to deliver ease of operation, a reduced need for training and also a reduction in spare stock levels required. Users can modify the device’s operation using the LCD and magnet switches without ever needing to open the unit. An optional local IS HART®


terminal port is also available, enabling one man, non-intrusive, operation, which also helps to reduce routine maintenance time and costs. Local LEDs are also provided to indicate the unit’s status at a glance.


XNX is compatible with all of Honeywell Analytic’ current range of industrial fixed gas sensors including Searchline Excel, Searchpoint Optima Plus, Sensepoint (HT and PPM) and Model 705, and sensors can be remotely mounted. There are also two new versions of sensor available with this device; the new Multi Purpose Detector (MPD), which provides serviceable stainless steel sensor housing with plug in catalytic and infrared sensor cartridges and the new XNX EC sensor, which is also a serviceable stainless steel sensor with a wide range of toxic and Oxygen plug in sensor cartridges. The sensor’s interface to the XNX transmitter is intrinsically safe, allowing sensors to be ‘hot swapped’ without the need for a hot work permit. XNX features global approvals including ATEX, UL, CSA standards, ATEX, UL and CSA performance approval (pending) and IEC61508 SIL 2 (pending). This device’s adaptable design, coupled with its easy and flexible use make XNX suited to a wide range of applications and industries including offshore oil and production facilities, oil and gas exploration and drilling, refineries, petrochemical/chemical plants, onshore oil and gas terminals, gas transmission and power stations.


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A Very Versatile Gas Detector


SIL 2 Rated Gas Detection System Will Always Let You Know What is Going on in Your Plant


The Statox 505 is a 4 – 20 mA Transmitter for toxic gases and oxygen by Compur Monitors (Germany) features everything that a gas detection instrument of the new generation needs. It includes state of the Art components (hardware and software), smart sensor technology, “heartbeat” sensor control and complete system diagnostics.


In process monitoring, the status information of plant components, in case of a failure, is becoming more of a critical issue.


The standards DIN EN 61508 as well as the product standard DIN EN 50402 are powerful tools to calculate the probability of a failure on demand. The Statox 505 complies with all of the requirements of these standards and complies with safety integrity level SIL 2 requirements. This provides a reliable database for the user to calculate the safety standard of the plant. If the Statox 505 is operated as a SIL 2 component, a so called “proof test” during certain time intervals is mandatory.


All important parameters such as sensor “heartbeat“, signal output, calibration, sensitivity, temperature, sensor memory, amplifier, CPU, power supply are continuously monitored for proper function. In addition, it checks for a negative zero. In case of a failure, an alarm will be triggered; thus, the system cannot fail without the error being noticed. A green LED signalises the system status. The display and the controls are located at the inside of the housing and are well protected from the elements.


The Biosystems PHD6 is a cutting edge multi-gas detector by Sperian (France). With its 5 sensor ports, its 6 detection channels and more than 19 sensor options including electrochemical, LIE, PID and infrared sensors, the Biosystems PHD6 is a very versatile gas detector.


The Biosystems PHD6 is a sophisticated, reliable and user-friendly gas detector. Day-to-day detection operations can be launched and kept under control using the mode button. On the display screen, a status bar with easily recognisable icons enables quick access to all data, from time to calibration status. User-friendly, built in menus enable advanced users to configure the detector on site. The PHD6 is constructed of an engineered poly- carbonate frame with a rubber overmold, making it tough and easy to handle. Alkaline or rechargeable (Li Ion battery) versions of the detector are also available.


To cut calibration costs and automate the monitoring of results, Sperian also commercialised the Biosystems IQ6 Express control and calibration dock alongside the PHD6. This easy to use and flexible device ensures a high capacity data processing. The user just has to put the detector on the dock before he starts working and the dock automatically performs common tests in under a minute to verify that the equipment is working well.


Thanks to its software, the IQ6 dock can also record data from the detector to draw up statistics on possible risks in a given environment. The very innovative func- tionality helps to reduce labour time and to cut calibration gas costs.


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The sensors of the Statox 505 are plug and play technology. Each sensor has an F- RAM on board which communicates all relevant parameters to the sensor head; including gas, measuring range, last calibration, ex works calibration, response time, alarm events etc. The sensors can easily be calibrated in the shop. Therefore, calibration work will never be required within harsh elements (wind, rain, cold, heat). In addition, carrying heavy test equipment and gas cylinders into the field will not be necessary. Quite simply, all the user has to in the field is plug the sensor back in. While the sensor is being calibrated in the shop, the sensor cartridge remains in place and protects the sensor head from both dust and rain.


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denver, colorado


may 22-27


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Reader Reply Card No February/March 2010


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