iv UK Focus - Air Monitoring Accurate and Reliable Oxygen Gas Analyser
The Rapidox 1100 oxygen gas analyser continues to be the company’s best-selling and versatile instrument due to its accurate and reliable service for over 15 years. Cambridge Sensotec is proud to announce a new design for the gas analyser with exciting enhancements.
A new OLED (organic light-emitting diode) screen now delivers improved visibility from every angle with four lines of information displayed. The Rapidox 1100 is easy to identify in laboratories, manufacturing plants or test facilities due to its new dynamic blue fascia design.
Additionally, for low ppm oxygen gas measurements, the Rapidox 1100Z models now include an updated zirconia planar sensor; providing a more effective sensor heater design, faster response time and superior service life.
An internal pressure sensor compensates for small changes in gas pressure to ensure that the readings remain stable. A powerful long-life pump draws in a gas sample at a flow rate set by the user between 0-1 litres per minute.
The Rapidox 1100 range are available in many variations including electrochemical oxygen sensors, a three-channel multiplex version, which allows for three gas streams to be sampled from separate points. Gases can be analysed in sequence or at intervals set from the controls (front keypad or software). The Rapidox 1100 oxygen gas analyser can also be used to control an external proportional flow control valve (PFC). This is particularly useful within inert gas blanketing applications, where the analyser can regulate the level of gas based on the measurement of oxygen via the PFC control function.
Standard features on all models include two fully programmable alarm circuits (volt free contacts), programmable analogue outputs (0-10V and 4-20mA), easy calibration (user selectable gases), RS232 / RS485 communications and complete data-logging software.
The Rapidox 1100 oxygen gas analyser range is well suited to a wide range of applications including monitoring inert atmospheres within solder reflow ovens, welding and additive manufacturing chambers, metal heat treatment, medical and food packaging testing applications.
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Trailer Mounted Analysers Allow Flexible Monitoring of Gas Turbines National Grid is set to potentially make substantial cost savings on the monitoring of gas turbine emissions by using a new trailer mounted emission
analysing system designed and built by ABB.
The trailer, based on the ABB Advance Optima AO2000 Series, will measure the emissions of gas turbine engines used in the compression of gas for transport on the national transmission system. The data on turbine performance will be used to help National Grid to take a more preventive approach to maintenance.
National Grid has had its own in-house test teams for 20 years. These teams have ensured that installed Predictive Emission Monitoring Systems (PEMS) are properly calibrated and conform to National Grid‘s license agreement with the Environment Agency. With its current mobile calibration systems reaching their end of life, National Grid issued a tender for a solution to replace them, which was won by ABB in January 2015. National Grid was reassured of the quality and reliability of ABB analysers by EON, which has used them for a number of years.
“So far the mobile emissions laboratory has been van mounted,” says Matt Williams, National Grid’s Environmental Officer, responsible for scheduling emissions testing for gas turbines. “While we wanted a replacement for the existing van based system, we also wanted a solution that would give us more flexibility, in the form of a portable unit that can be left on site. A lot of gas turbines are switched on and off at unpredictable times to account for demand so we needed a unit that could undertake remote operation for a longer period of time.
“Much emissions testing is also performed on gas turbines following a shutdown. Sometimes we do not know exactly when a test will be required, so having a portable unit available means we can pre-position the trailer at the site, ready to conduct a test at short notice. This also avoids the time and costs of sending test engineers to the site.”
National Grid contacted three possible suppliers, two of whom expressed interest in providing a solution. ”The ABB quote met all of the specifications and I had real confidence in that they could deliver what they promised.“
Maximise your profitability without ruining the environment
Tightening legislation around global warming, acid rain, air, water and soil contamination makes accurate measurement of industrial emissions more important than ever. ABB’s emissions monitoring solutions have delivered proven performance in a wide variety of industries for over 50 years.
Our new brochure explains how our Continuous Emission Monitoring Systems (CEMS) can be used to measure a wide range of parameters, enabling you to maximize profit while operating in a sustainable way.
Download your copy at
bit.ly/ABBCEMSbrochure or scan the QR code below.
The solution is based on the ABB Advance Optima AO2000, a modular system which consists of one master analyser with a power supply and housing with display and control unit, also known as the “central unit”.
Based on a common control system, common communications and a common system housing, up to four slave analyser modules can be arranged in various ways to form single or multiple analyser systems. Advance Optima offers analyzer modules using various measurement principles, enabling a single system to handle multiple parameters.
The solution for National Grid will consist of a Uras26 Infrared analyser module, MAGNOS oxygen analyser modules and a Multi FID Flame Ionisation Detector. Each analyser module consists of the sensor and its own processor.
The system will allow National Grid engineers to measure emissions at the gas compressor stations remotely, using a 3G network to access analyser data and diagnostics. National Grid will also be able to make use of an Envirosoft reporting package to create reports on the performance of the gas turbines.
The trailer will initially be used as part of a research program in partnership with a gas turbine OEM and commissioned into service during 2016. A van mounted system is also due later this year.
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IET Annual Buyers’ Guide 2016/17
www.envirotech-online.com
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