Instrumentation


Advances in trace moisture measurement


T


rials of new high sensitivity moisture transmitters measuring trace water content have demonstrated high


precision and stability at the sub ppm levels finding use in applications such as gas drying, catalyst protection and semiconductor gases.


ensure trace moisture content is reported reliably against Mass traceable Standards. It does not require recalibration for different


gas compositions. Zero and span correcting modules can also be added to periodically and automatically correct for the effects of contaminants to extend routine service intervals and maintain reliable results. Trials in petrochemical industry confirm commissioning is simpler whilst reduced training and support requirements have helped to keep operating cost down.


Sampling at atmospheric pressure and capable of resolving down to 1 ppb with a dynamic range up to 30ppmV the high sensitivity heated silicon sensor technology has been shown to settle to a 95 per cent moisture change within just six minutes.


Self-diagnostics and error trapping routines


Comparisons of two transmitters in series demonstrates the high precision between them as they are run up from dry to wet conditions between 1 ppb and 7,500ppb with spread of results between them being just ppbs. ■


For more information ✔ at www.engineerlive.com/epe


MCM Ltd Product Manager, Wetherby, West Yorkshire, UK. www.mcm-moisture.com


View a live demo on YouTube…. http://www.youtube.com/watch?v=x6hNDuYpLDQ


Monitor the invisible to assure quality and safety


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nfrared machine vision is proving the ideal choice for an increasing number of manufacturers seeking to validate and


increase product quality and throughput, whilst minimising waste and improving profitability. FLIR Systems has recently introduced a new range of discrete thermal imaging cameras suitable for quick and easy integration onto any production line. While traditional machine vision can see


a production problem, it can’t detect thermal irregularity. In contrast infrared gives much more information to the decision maker. It also requires no additional lighting to illuminate target scene and can ‘see’ through both ambient dust and smoke.


The FLIR A35 thermal imaging camera Advances in Trace Moisture Measurement


Trials of new high sensitivity moisture transmitters measuring trace water content have demonstrated high precision and stability at the sub ppm levels finding use in applications such as gas drying, catalyst protection and semiconductor gases.


Sampling at atmospheric pressure and capable of resolving down to 1 ppb with a dynamic range up to 30 ppmV the high sensitivity heated silicon sensor technology has been shown to settle to a 95% moisture change within just 6 minutes.


Self diagnostics and error trapping routines ensure trace moisture content is reported reliably against Mass traceable Standards.


The technology does not require recalibration for different gas compositions. Zero and span correcting modules can also be added to periodically and automatically correct for the effects of contaminants to extend routine service intervals and maintain reliable results.


Trials in Petrochemical Industry confirm commissioning is simpler whilst reduced training and support requirements have helped to keep operating cost down.


MCM Ltd was established in 1968 and specialises purely in gas analysis.


www.mcm-moisture.com For more information ✔ at www.engineerlive.com/epe


is a typical example in the new compact series. It is fully compliant with both GeniCam and GigEVision protocols making it instantly ready for quick and easy network installation. Communication and power are supplied via one cable. Both standards make it easy to integrate software and similarly compliant equipment from different vendors. And this considerably extends the camera’s scope of application. Typical uses for the FLIR newcomer are in


open loop and high-speed applications whose quality and control can be governed by thermal contrast rather than accurate temperature measurement. ■


For more information ✔ at www.engineerlive.com/epe


FLIR Systems Ltd is based West Malling, Kent, UK. www.flir.com


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