City Technology launches new PID Sensor
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City Technology announces the introduction of a Photoionisation (PID) sensor to its range of gas sensors.
City Technology’s PID sensor uses the industry standard 7-Series format and utilises a high-energy 10.6eV uv lamp which can easily be removed from the sensor for either cleaning or replacement. City's PID sensor uses a novel electrode stack incorporating a third electrode - the fence electrode - unlike conventional PID's which utilise only two electrodes (an anode and cathode) for ion collection. The 3-electrode design improves performance and extends lamp operating lifetime. The fence electrode, which is located in the electrode stack between the anode and cathode, substantially removes the background signal due to photo-ejected electrons from the cathode, and any background that can arise from contamination and condensation on the ionisation chamber walls. By reducing these background effects, the fence electrode improves baseline stability and hence increases the minimum detection limit of the sensor. Additionally, the user does not need to service the lamp or replace the stack as frequently as in other PID cells. City’s Sales and Marketing Director, David Baldwin-Evans commented “the introduction of the new PID Sensor provides our customers with an exciting new cost effective opportunity to introduce low level VOC detection into their products. The new PID Sensor underlines City’s commitment to delivering our customers the best gas sensing solutions.” For further media information please contact: Nicola Nye at nicola.nye@citytech.co.uk Or + 44 (0)23 9228 8146 Note to Editors: peg photographs of the PID Sensor can be downloaded from www.citytech.com/press New sensors enhances the MICROceL® range City Technology announces two new sensors as part of its revolutionary MICROceL® range of miniature gas sensors – an oxygen sensor - MICROceL® OX and a reduced power pellistor – MICROpeL®40. MICROceL® OX
MICROceL® OX uses the “industry standard” capillary diffusion barrier so directly measuring the concentration of oxygen in the atmosphere. The sensor also incorporates the innovative IMES (Injection Moulded Electrolyte Seal) mechanism that ensures the highest possible seal integrity is maintained throughout the product life.
City Technology’s complete range of MICROceL® sensors (oxygen, carbon monoxide, hydrogen sulphide and combustible gas sensors) offer OEM instrument designers a truly significant opportunity to reduce the size of future gas detectors. Together the four sensors occupy 70% less volume than the current industry standard 4-Series sized sensors. What’s more, this size reduction has been achieved without any compromise to performance. All the MICROceL® sensors continue to perform to the very exacting demands of industrial safety & hygiene applications across a wide range of environmental conditions. In fact the small size of the sensors improves some of the performance parameters, notably faster response times. ENDS For further media information please contact: Nicola Nye at nicola.nye@citytech.co.uk Or + 44 (0)23 9228 8146 Note to Editors: jpeg photographs of the MICROceL® range can be downloaded from www.citytech.com/press
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With the growing requirement to detect a wide range of toxic Volatile Organic Compounds (VOCs) at levels significantly below their LEL (Lower Explosive Limits) PID is emerging as the most suitable technique. The introduction of City’s new PID sensor provides OEM instrument designers with a simple, high performance, low maintenance and cost effective solution to this technique. 
Building on over 28 years experience in the design and development of gas sensors City have also introduced radical design concepts to produce an oxygen sensor that is 38% smaller than current sensors. This very significant reduction in size is achieved without any loss in performance or lifetime. The sensor has a minimum operating lifetime of 24 months. 
By using a new design of pellistor bead the MICROpeL® 40 requires 40% less power than conventional pellistors so reducing consumption from over 250mW to less than 155mW. Like the rest of the MICROpeL® range the new sensor is available in 3 versions; the standard MICROpeL® 40, the MICROpeL® 40C with enhanced poison resistance and the MICROpeL® 40M for use in mining applications.