February 2008Analytical Instrumentation & Environmental Monitoring
A new process gas chromatograph from Siemens Automation and Drives (A&D) based on micro-technology rapidly and precisely determines the calorific value of natural gas. The Sitrans CV finds application in pipeline monitoring, gas transfer and distribution, gas liquefaction and re-gasification of LNG terminals. The device has a rugged and explosion-proof housing, is compact and suitable for use in extreme conditions from -20 to +55°C. The unit can be mounted directly next to natural-gas pipelines and delivers measured results in less than three minutes.
A primary application of the Sitrans CV is the monitoring of natural gas under custody transfer
The chromatograph determines the quality of natural gas in terms of Wobbe index, calorific value and density, parameters which play an important role in the varied applications of the natural-gas industry. They are particularly important when monitoring the quality of gas under custody transfer. Measurement accuracy is independent of sample pressure or ambient temperature and results can be displayed directly on the device. The instrument uses miniaturised detectors and valves made using micro-electro-mechanical systems (MEMS) technology, resulting in minimal consumption of carrier gas and electricity and eliminating the need for analyser sheltering. The detectors are highly linear requiring only one calibration gas, which means reduced operating costs and increased availability. Automated optimisation of measuring parameters at calibration time ensures a high degree of accuracy and reliability.
Chemical composition of the gas under measurement is determined in accordance with ISO 6976, the measured components being methane up to nonane, nitrogen and carbon dioxide. The detection limit for pentane and higher hydrocarbons is between 10 and 50 ppm. The measuring error is less than 0,1% with repeatability greater than 0,01% and internal switching functionality allows up to four sample streams to be measured successively.
Due to its modular design the device can be maintained quickly and easily. All the analytical components, including the oven, are integrated in an analytic module that can be replaced within five minutes through plug-and-play capability. This reduces the average maintenance time to half an hour. The Windows-based software is user-friendly, simple and clear. A password protection system prevents unauthorised access to the device's parameters and analysis results, while a logbook documents all alarms and manipulation.
Getting the chemistry right
Analytical Instrumentation & Environmental Monitoring
Grace’s European production site has relied on analogue compression load cells from Minebea Intec for decades, with the long-proven measurement concept now serving as the reference for new silo projects as the company expands its capacity.
Read more...Siemens powers next-generation reusable spacecraft development Siemens South Africa
IT in Manufacturing
A European aerospace startup focused on reusable space systems, has adopted Siemens Xcelerator software to connect engineering disciplines, reduce rework and accelerate spacecraft development, cutting the path from concept to flight hardware to nine months for its orbital demonstration capsule.
Read more...Sinamics G210X for advanced pump, fan and compressor applications Siemens South Africa
Motion Control & Drives
Siemens has introduced the Sinamics G210X, a frequency converter for pump, fan and compressor applications combining easy engineering, IP55 protection and integrated S2 system redundancy for reliable operation in demanding infrastructure environments.
Read more...Why measurement matters in smelting Endress+Hauser South Africa
Analytical Instrumentation & Environmental Monitoring
South African smelters returning to operation after energy constraints face new demands for tighter control, better visibility and environmental compliance. Endress+Hauser explains how modern measurement technology supports safer, more efficient furnace operation and local beneficiation.
Read more...Sun tracking with pinpoint precision Senseca
Analytical Instrumentation & Environmental Monitoring
Senseca has introduced the SEMS-2000 solar energy measurement system, a 2-axis solar tracker with pinpoint sun-pointing accuracy that automatically monitors direct, global and diffuse irradiance for unattended outdoor solar installations.
Read more...Siemens software scales with Simple Energy EV development Siemens South Africa
IT in Manufacturing
: Simple Energy, an Indian electric two-wheeler manufacturer, has expanded its use of Siemens Xcelerator software to manage complex vehicle variants and enterprise-level bills of materials, accelerating product development as its EV portfolio scales.
Read more...Luna Rossa partners with Siemens for 38th America’s Cup Siemens South Africa
IT in Manufacturing
Siemens details how Luna Rossa is using digital engineering and simulation tools, from CAD to structural optimisation, to design a faster yacht for the 38th America’s Cup.
Read more...AMETEK expands 993X gas analyser series with explosion-proof enclosures
Analytical Instrumentation & Environmental Monitoring
AMETEK Process Instruments has added ATEX and IECEx Zone 1-certified explosion-proof enclosures to its 993X series of gas analysers, enabling reliable installation in Zone 1 hazardous locations where purge gas is unavailable.
Read more...Advancing high-performance motorsport design Siemens South Africa
IT in Manufacturing
Siemens explains how its simulation software is helping motorsport engineering group ORECA speed up vehicle design and optimise composite structures for its Le Mans hypercar programme.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version