Measurement and Testing


New Quality Control Process Instrument


The Hilase is a reliable and virtually maintenance free process analyser for the


measurement of H2S, H2O, CO2, CH4, C2H6, Methanol/Ethanol,


COS, Ammonia, etc in a range from low ppm to high % levels from Hobré Instruments (Netherlands).


Reliable H2S, H2O and CO2 measurements are critical in many industries to control gas


treatment, protect process equipment and pipelines and supply a good quality gas to your customers.


The Hilase is a big step forward as it offers a combination of features not available with any other technology. No moving parts, no costly parts subject to wear, full separation of photo acoustic measuring cell and electronics, heated cell option, fast 20 seconds response time, stable calibration, more then 90% self diagnostics, robust design, easy installation, a 6 months maintenance interval, ATEX zone 1 certification and >99,8% availability.


In contaminated gas streams the photo acoustic cell is far less sensitive to fouling than an optical detection method.


The analysis is based on photo acoustic technology, whereby the different compounds are excited by Tuneable Diode Laser (TDL) and detected by a microphone. The TDL wavelength is tuned to the absorption line of the measured component and its background.


This technology utilises all the benefits of high resolution and thus very specific, virtually interference free excitation of TDL, combined with a robust photo acoustic detection principle.


By modulating the laser with a frequency equal to the resonance frequency of the acoustic cell, a sound signal is generated. This sound signal is measured by a sensitive microphone and provides a linear response over a wide concentration range.


As the Hilase does not use optical detection, the analysis is insensitive to contamination or fouling.


The 6 months maintenance interval in combination with 1,5 hour warm-up time the analyser provides a high availability. The >90% self diagnostics results in improved reliability.


Multiple photo acoustic cells and/or dual lasers in a single analyser allow simultaneous analysis


of different components (e.g. H2S; H2O; CO2; CH4 etc.) and multi-stream monitoring (e.g. before and after separators).


This robust analyser is suitable for outdoor installation in a harsh industrial environment where minimal maintenance and minimal operator interventions are required.


The stable calibration factors require only a single point calibration verification every 6-12 months. The analyser does not have moving parts nor require consumables.


Typical Hilase applications include H2S monitoring before and after scavenger dosing,


H2S in Crude Oil, storage tanks, production and test separators, refinery fule and flare gases,


H2S and H2O in Natural Gases and LPG's, H2S and CO2 in (amine) absorbers, H2O and H2S in recycle gas and methanol breakthrough in natural gas separators.


Reader Reply Card No 136 Reader Reply Card No 138 ATEX Rated Temperature Control Solutions


In addressing the complexities, restraints and demands of ATEX zones 1 & 2, Huber (Germany) offer two solutions for use with the Unistat range of temperature control systems.


The first option consists of a water cooled Unistat installed in an Ex-p pressure encapsulated ATEX rated cabinet according to EN 60079-2 (Ex px II T4).


The Ex-p cabinet is made from stainless steel with a sealed double door and provides a neutral shelter as part of a complete system in areas with possible explosive atmosphere. Compressed air is pumped into the cabinet purging it of any potentially dangerous vapours and creating a pressure slightly above atmospheric level.


The Unistat is operated by the Unistat pilot. A thin plastic membrane covers the face of the pilot, sealing it inside the pressure chamber, allowing the Unistat to be operated by the touch screen and encoder.


The second option is an ATEX certified remote controller, which can be located in the ATEX zone for convenient operation of the Unistat situated in the safe zone. The ATEX remote controller conforms to ATEX class II 2G Ex ib IIC T4.


Combined with the Unistat’s hydraulically sealed, low volume fluid circuit and Huber’s knowledge of thermal transfer and temperature control, an ATEX certified system is available that provides rapid and responsive temperature control for even the most aggressive and demanding applications, from -120°C up to 300°C.


Reader Reply Card No 135


37


New Sievers InnovOx On-Line Analyser Handles Toughest Samples


The Sievers InnovOx On-Line and Laboratory Total Organic Carbon (TOC) Analysers are designed for the industrial wastewater, environmental, and process water industries. The InnovOx (short for “Innovative Oxidation” technology) uses a patent-pending technology, Supercritical Water Oxidation (SWCO). SCWO combines high temperature and pressure to convert an aqueous sample matrix into supercritical water, a phase in which the water is neither liquid nor gas, and where Supercritical Water Oxidation can occur. This results in more efficient oxidation, better TOC measurement accuracy and precision, and the elimination of problematic sample contamination after analysis. The Sievers InnovOx measures from 0.5 to 50,000 parts per million (ppm) TOC. It features extended calibration stability, user-configurable alarms and outputs, an Ethernet Web browser interface for remote monitoring, and an intuitive colour touch-screen display. The InnovOx is extremely easy to set up, operate, and maintain, and offers a low cost of ownership. Email: geai@ge.com • Tel: 800 255 6964 • Web: www.geinstruments.com.


Reader Reply Card No 137


GE Power & Water Water & Process Technologies


Take Control of Your TOC


The Sievers InnovOx Laboratory and On-Line Total Organic Carbon (TOC) Analyzers from GE Analytical Instruments combine simplicity and technical innovation for process, environmental, and wastewater TOC analysis. They feature:


  tough samples with maximum uptime


 Fast startup, ease of use, stable calibration  Low maintenance and cost of ownership  Ethernet Web interface for remote monitoring


  pump, IP56 and NEMA 4X enclosures, and other accessories


Schedule a demo today at: geai@ge.com / 303 444 2009 (USA) / +44 161 864 6800 (UK) / www.geinstruments.com


February / March 2011 • www.petro-online.com


InnovOx On-Line


For Industrial Process, Wastewater and Environmental TOC Analysis


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