12


Gas Detection


LuminOx Fluorescent Oxygen Sensor Gains A Competitive Edge


Commitment to Service & Support


Figure 1: Effect of 250mbar Pressure Pulse at 21% O2


Figure 2: Effect of two 20mbar Pressure Pulses at 21% O2 Electrochemical sensors are extremely sensitive to changes in the gas pressure, even when the O2 concentration remains constant.


LuminOx from SST Sensing (UK) is available in two versions: LOX-01 (without built-in pressure compensation) and LOX-02 (which contains a barometric pressure sensor).


LOX-01 measures oxygen partial pressure between 0 and 300mbar. If the total gas pressure changes, then the ppO2


LuminOx reports this. LOX-02 reports both oxygen pressure (ppO2


pressure and the ppO2 in mbar) and O2 concentration (vol. % O2 and the gas temperature was held at 20o changes and ), the latter being calculated from the total gas . This means that LuminOx will continue to read the correct oxygen concentration, even during rapid pressure


changes. LuminOx is also able to transmit the total gas pressure to the host via the two-wire communications interface. Three sensors were supplied with 21% O2


% reported by the three sensors is measured on the left axis. A similar test was performed with smaller (20mbar) positive and negative pulses. (See Figure 2)


LuminOx is affected slightly but only briefly during the pressure event. The electrochemical sensors are affected significantly (the O2


% error is as large as 34%) and the disturbance in the output lasts considerably longer. Reader Reply Card No. 30 C. A pump was used to introduce a brief pulse of


positive pressure of around 250mbar. The blue line in Figure 1 is the pressure measured inside the test enclosure. The pressure is read on the axis to the right of the graph. The O2


Trolex (UK), specialists in gas detection and environmental monitoring systems have extended their warranty period to two years, providing additional cover for all of their equipment.


This new extended warranty period continues Trolex’s dedicated commitment to quality products and services. As their customers already count on the performance and reliability of their products, Trolex’s new warranty extension strengthens the value of their investment.


New Chinese and German Websites Launched


Trolex (UK), specialists in gas detection and environmental monitoring has launched two new websites.


The launch of the new websites is to ensure that its message on safety is heard, and that access is available to its gas and environmental sensing solutions in these key markets. Trolex is investing heavily in developing partnerships in support centres around the world.


Trolex has also developed a Chinese brochure and a set of datasheets and is now working on a Polish version too. A Spanish version of the Mining Brochure is also available to view online.


The sites include all elements of the English language website and will cater for all aspects of the Chinese and German market in mining, tunnelling, industry, gas recovery and rail. With both Chinese-speaking and German-speaking staff at Trolex, the company can offer customer support and technical support for new and existing customers in these key markets and the websites make all the information easily accessible to them.


Trolex believes safety is paramount in the mining industry and wants to bring the message that investing in production efficiency and mine automation has an immediate positive effect. Developing these websites has enabled Trolex to further this message.


Reader Reply Card No. 31


Trolex is very proud of its product support and indeed all of its services, and consistently gets good feedback from customers. They can offer a service contract specifically tailored to requirements that covers the maintenance of their products. Trolex ensures that when customers call for product support, they speak directly to an engineer, not a call centre.


Steve Smedley of ESG Ltd, commented, “As a frequent customer of Trolex, we would like to highly commend both the sales and product support departments for their excellent service with regard to all of our needs. Their professionalism, technical knowledge and rapid response to our needs ensure that we can provide our customers with a robust, reliable and efficient service. We look forward to carrying forward our excellent relationship into the foreseeable future.”


James Savage IEng MIET, Electrical Engineer, Kellingley Colliery commented, “For many years Trolex have supplied UK Coal’s Kellingley Colliery with transducers for environmental and machine based health monitoring. Safety is at the forefront of all our operations at Kellingley, Trolex offer us advanced and reliable systems backed up with both on site and factory-based technical support as and when required. The Trolex commitment to quality, reliability and a vision for the future coupled with a strong customer focus enables Kellingley to continue to support our commitment to a safe working environment”.


Reader Reply Card No. 32


FOS/TAC 2000 – assessment of VOA and TAC major substrate variables


in biogas , CO2


SSM 6000 – analysis of CH4


, H2 S, H2 Multiple Job Openings to Support Growth and O2


Industrial Scientific (USA), global specialist in Gas Detection as a Service, announced today that the recent and continued growth of the company’s portable gas detection business has led to more than 40 job openings being posted.


The open positions, many of which are at the company’s headquarters near Pittsburgh, range in functions including customer service, engineering, manufacturing, product management, service operations, software development, supply chain, and more. Interested applicants should visit www.indsci.com/careers to view the complete listing of openings and apply online.


“We are excited by this recruiting effort and the opportunity it brings to further strengthen our ability to serve our customers,” said Harry Griffith, vice president of people & leadership. “We are looking for candidates who will positively contribute to our thriving corporate culture during this period of growth and beyond, and also have a history of excellent performance.”


Analysentechnik GmbH & Co. KG Groninger Straße 25 – 13347 Berlin – Tel ++49(0)30/455 085-0 – Fax ++49(0)30/455 085-90 – info@pronova.de


Reader Reply Card No. 33 IET September / October 2012 www.envirotech-online.com www.pronova.de


The company’s recent growth can be attributed to iNet – Industrial Scientific’s Gas Detection as a Service solution. iNet is a software-based service that solves common challenges faced in gas detection programs related to the maintenance of gas detector fleets and the lack of visibility into instrument alarms, exposure and usage. Today, there are more than 70,000 gas monitors operating on iNet at worksites around the world.


Reader Reply Card No. 34


BIOGAS ANALYSE


FOS/TAC 2000


SSM 6000


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