September 2007Analytical Instrumentation & Environmental Monitoring
The Yokogawa TruePeak tunable diode laser (TDL) analyser is designed to make fast, accurate measurements on near-infrared absorbing gases in harsh process environments. It is suited to in situ analysis, particularly for measurements in environments involving changing pressure or temperature. The analyser can operate with process pressures up to 20 bar absolute and process temperatures up to 1500°C, has a fast response (from 1 to 20 seconds), and is interference-free for most applications.
The analyser operates by measuring the amount of a laser light that is absorbed as it travels through the gas being measured. Involving no sensor contact with the process and no moving parts, it leads to a high MTBF and consequent low cost of ownership. Using a tunable diode laser as a monochromatic light source offers the benefits of sensitivity, selectivity to resolve single absorption lines, and power to overcome the effects of optically thick environments with high particulate loading.
The instrument is robust. In addition to operating in conditions of high temperature or pressure, it can be used under difficult conditions including environments involving corrosive, aggressive and high particulate content materials.
The TruePeak TDL analyser measures oxygen (O2) with process temperatures as high as 1500°C and pressures as high as 20 bar absolute. The measurement span is typically between 1% and 100% oxygen. Carbon monoxide (CO), from low ppm detection limits to percentage levels, and carbon dioxide (CO2) can also be measured at process temperatures of up to 1500°C. The analyser can also be used for measuring parts per million moisture content in corrosive and aggressive process streams including chlorine and hydrocarbons.
The ability of the instrument to carry out accurate online process measurements makes it ideally suited to applications such as combustion control, where it can be used to optimise the combustion process by measuring excess oxygen and carbon monoxide on a precise and continuous basis. It also allows carbon monoxide to be accurately measured on a continuous basis at low ppm levels so that air fuel ratios can be precisely and continuously optimised.
Other potential applications include the monitoring of carbon monoxide, methane and moisture to enable burner flame-out and process tube leaks to be identified; the measurement of oxygen on flare lines, alkylation units and gas plants; the monitoring of carbon monoxide and oxygen on fluid catalytic cracking units for safety and catalyst regeneration; or the detection of low ppm concentrations of water in hydrocarbons in catalytic reforming processes.
The TruePeak analyser is a compact standalone unit with a built-in 4 x 20 vacuum fluorescent display for scrolling information and a 7-inch colour screen with keypad. The instrument offers a range of interfaces including Ethernet, USB and wired or wireless PDA communication for safe or hazardous areas. The instrument includes three configurable 4-20 mA outputs, two 4-20 mA in case of temperature and pressure compensation, and relay outputs including warning/fault relays and valve control.
The analyser is CE marked and ATEX approved for Zone 1 or 2 installations with purge system.
Importance of gas analysis in the petrochemical industry Elemental Analytics
Analytical Instrumentation & Environmental Monitoring
Gas analysis plays a critical role in petrochemical operations, supporting process optimisation, product quality and plant safety. As an experienced and expert gas analysis supplier, Elemental Analytics can provide the correct analyser and sample system package to meet individual plant requirements.
Read more...Yokogawa digital plant to accelerate green hydrogen revolution Yokogawa South Africa
Editor's Choice Electrical Power & Protection IT in Manufacturing
Yokogawa explains how a digital plant approach and autonomous operations can integrate the full green hydrogen value chain, from renewable power generation to end-use applications, and why digitalisation and system integration are central to making green hydrogen viable in South Africa.
Read more...Fully integrated standalone thunderstorm warning system Senseca
Sensors & Transducers Analytical Instrumentation & Environmental Monitoring
Senseca South Africa has introduced its BTD-1 fully integrated, standalone thunderstorm warning system, which detects lightning by monitoring the background quasi-electrostatic field. The system can generate alerts before the first lightning strike, with a detection raterange of up to 83 km.
Read more...Environmental monitoring with testo Saveris 1
Analytical Instrumentation & Environmental Monitoring
The testo Saveris 1 environmental monitoring system has been in continuous use since 2010 at Jungbunzlauer, a biotechnology company in Germany, providing seamless temperature and humidity data for audit-ready, GxP-compliant processes across laboratories, warehouses and production areas.
Read more...Flow imaging microscopy for the early detection of harmful algal blooms Yokogawa South Africa
Flow Measurement & Control
Yokogawa’s advanced flow imaging microscopy technology, FlowCam is helping utilities move from reactive treatment to proactive prevention of harmful algal blooms in reservoirs, dams and freshwater sources.
Read more...Reliability restored through systemic vibration analysis Wearcheck
Analytical Instrumentation & Environmental Monitoring
Condition monitoring specialist, WearCheck uses a variety of testing techniques to enhance reliability in machinery components and prevent failures.
Read more...Meteorological data logger with up to 32 analogue sensors Senseca
Analytical Instrumentation & Environmental Monitoring
Senseca has introduced its advanced data acquisition system for environmental monitoring, which has a universal data logger for up to 32 analogue, pulse and smart digital sensors.
Read more...Yokogawa’s free chlorine analyser is gold standard for water treatment utilities Yokogawa South Africa
Analytical Instrumentation & Environmental Monitoring
One of the key factors in ensuring safe drinking water is the accurate monitoring of free chlorine residuals. This is where advanced online analysers, such as Yokogawa’s FC800 free chlorine analyser, are becoming increasingly valuable for water treatment operators and municipal utilities.
Read more...Cooling tower bleed control
Analytical Instrumentation & Environmental Monitoring
Cooling towers rely on evaporation to remove heat, but this process also concentrates dissolved solids in the system. Left unmanaged, this buildup can lead to scaling, corrosion and fouling, reducing efficiency and increasing maintenance costs.
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