Moisture Monitoring Applications

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Moisture Monitoring for Instrument Air & Compressor Systems

by Moisture Control & Measurement Ltd     based in Wetherby, UNITED KINGDOM

The presence of humidity in a blanketing gas for sensitive instruments can cause corrosion problems, rapid changes incalibration and loss of sensitivity. The presence of oil contamination in compressors can cause similar problems.

Measurement of methane, methanol and ethanol for the biomass monitoring for biofuels.

by MOCON - Baseline     based in Lyons, COLORADO (USA)

The Series 8900 provides direct measurement of methane, methanol, and ethanol for the biofuel industry. The Series 8900 GC employs a flame ionization detector (FID). The methane, methanol, and ethanol in the gas sample are physically separated using proprietary GC columns. A dual-column configuration with timed backflush to vent is used to strip off moisture and heavier gases. At sample injection, a fixed volume of sample is carried through the pre-cut column. The backflush is timed so that primarily the MME and other similar compounds continue on to the analytical column. Contaminants are then backflushed to vent. Methane, methanol, and ethanol are separated from potentially interfering components on the analytical column and elute to the detector for analysis.

Low level measurement of aromatic hydrocarbons (BTEX) for pollution control and environmental monitoring.

by MOCON - Baseline     based in Lyons, COLORADO (USA)

The Series 8900 BTEX Analyzer with a high-sensitivity PID provides direct low level measurement of Benzene, Toluene, Ethylbenzene, and Xylene`s in ambient air. This instrument is utilized in ambient air networks around metropolitan areas and fence-line monitoring at industrial sites.

Moisture Monitoring for SF6 / Air Circuit Breakers

by Moisture Control & Measurement Ltd     based in Wetherby, UNITED KINGDOM

SF6 (sulphur hexafluoride ) or air is used as an insulation gas in circuit breakers . Excess moisture in these gases causes arcing, which can trip the circuit breaker and cut off power to the distribution network. More seriously, such arcing can lead to physical damage of equipment and, on occasion, death of plant operatives (please ask for our case study on circuit breakers).

Water Vapor Permeation Analyzers for Packaging Industry

by Systech Instruments Ltd     based in Thame, UNITED KINGDOM

For packaging film barriers, the Systech Illinois range of water vapor permeation analyzers offer a wide measurement range with precision temperature, humidity and flow control. These analyzers utilise the Coulometric P2O5 sensor, which is more sensitive and stable than infra-red and does not require calibration. The P2O5 is the primary method for absolute moisture measurement.

Moisture Monitoring for Hydrogen Annealing Ovens

by Moisture Control & Measurement Ltd     based in Wetherby, UNITED KINGDOM

High moisture content in hydrogen gas used in annealing furnaces causes oxidation of the metal to occur, thus resulting in an undesirable surface finish on the product

Moisture Monitoring for Natural Gas & LNG

by Moisture Control & Measurement Ltd     based in Wetherby, UNITED KINGDOM

The presence of moisture in high-pressure natural gas from production wells causes pipelines and associated valves to freeze. High moisture content also leads to the formation of hydrates of the liquid hydrocarbons present, thus causing further difficulties. The moisture content of the gas also adversely affects the calorific value of the gas, thus lowering the quality and value of the product. Moisture is therefore measured at the point of extraction, at export stations, at gas storage locations and in the transmission grid. As natural gas often contains high levels of contaminants, more complex systems are required to maintain instrument performance over prolonged periods and to verify data collected in spot-check moisture analysis.

Integrated real-time gas analysis solution for electronic specialty gases industry

by CIC Photonics, Inc.     based in Albuquerque, NEW MEXICO (USA)

The company’s entry into the electronic specialty gas market originated in 1994-95 as a consequence of the semiconductor industry’s demand for increasingly higher purity gases from the major gas producers. The issue was then and remains today to be primarily moisture impurity levels in the cleaning, etching, and treatment gases used in wafer production. In that earlier period when common wafer sizes were 6” and 12”, the semi industry required moisture concentrations to be 250 to 500 ppb or better; with each year after that the industry tightened its requirements such that today the moisture specifications are 1 to 5 ppb or better.

Biofuel Analyzing for the Bioenergy Industry

by AppliTek NV - Environmental Analysis Division     based in Nazareth, BELGIUM

AppliTek has already developed the necessary tools to measure and control on-line the production, in case the futur is in favour of biofuels. For biodiesel, the following quality indices should be monitored, on order to comply with international legislation on biofuel QC:

Free fatty acids - Calcium & Magnesium - Total Phosphorus - Potassium - Moisture (water content)

Industrial air pollution control for the building materials, cement and lime

by Chemisch Thermische Prozesstechnik GmbH / CTP Air Pollution Control     based in Graz, AUSTRIA

One of the oldest industry sectors, the construction materials industry has developed a broad range of products that is constantly adapting to the state of technology and architecture: Concrete, thermal and moisture protection, masonry, plastics, composite materials and finishes, are all used in the erection of buildings and structures, and also as auxiliary materials on construction sites.

Moisture Monitoring for Liquid Benzene Feed Stock

by Moisture Control & Measurement Ltd     based in Wetherby, UNITED KINGDOM

Moisture needs to be measured in feed stock gases in the manufacture of polymers . For example, pre-dried benzene is fed in to a reactor containing hydrochloric acid – if the dryers are not operating properly moisture in the benzene promotes acid corrosion of the reactor and process lines. Several processes require water concentrations of specific values to optimise efficiency and yield; in such cases more sophisticated instruments are required.

Moisture Monitoring for Refinery Recycle Gas & Plant Start-up

by Moisture Control & Measurement Ltd     based in Wetherby, UNITED KINGDOM

Optimal performance of petrochemical reforming catalysts depends upon maintaining an optimal moisture / chloride ratio within the reforming reactor. When moisture and chloride are out of balance, catalysts suffer from higher deactivation rates and decreased yields. The cost of inadequately controlling the moisture / chloride ratio can be very high in terms of yield losses, off-spec product, increased catalyst regeneration , early catalyst replacement , processing upsets and / or increased downtime.

Filtration for Flue Gas Analysis and CEMS

by Shanghai CMI Environmental Technology Co.,Ltd.     based in Shanghai , CHINA

Three Steps of CEMS: 1st Step: Gas Sampling 2nd Step: Gas conditioning and treatment 3rd Step: Measurement/Calibration In first step, the function is to get sample gas and forward to 2nd step for treatment. During this step, it cannot block the probes and cannot result condensation of moisture. So a filter online back flushing should be equipped in this part. The filters to be used: 1, Filter is used to ensure the stability of system and reduce the maintenance 2, Filtration Grade: usually 2 or 3 micron 3, Temp. is around 0-180 deg C 4, Back flushing gas is heated, impulse flushing 5, Filter Material: Titanium Sintered, SS316L Sintered, PTFE sintered, Ceramic Membrane and so on 2nd Step Gas Treatment: #11;The coarse filters and the liquid particle filters The coarse and fine cartridge can filter the small particles in the gas and acid aerosol things to better protect the instruments. The micron can be 0.1micron, filtration rate can be up to 99.99%, two layers can be 99.9999%

Moisture Monitoring for Nuclear Reactors

by Moisture Control & Measurement Ltd     based in Wetherby, UNITED KINGDOM

The Advanced Gas Cooled Reactor uses carbon dioxide gas to transfer heat from the nuclear fission core to the water boiler for steam generation. The moisture content needs to be monitored to avoid corrosion damage, and continuous moisture monitoring acts as a boiler leak detector or bulk moisture meter.

Measurement of methyl bromide in ambient air for monitoring workplace exposure limits in fumigation facilities

by MOCON - Baseline     based in Lyons, COLORADO (USA)

The Series 8900 Methyl Bromide Monitoring System provides an automated, direct measurement of Methyl Bromide in ambient air. This instrument can meet and exceed the requirements for ambient methyl bromide monitoring. It is utilized in fumigation facilities and industrial plants to detect potential worker exposure to methyl bromide, resulting from mechanical failure, human error or product off gassing. Multipoint sampling options allow the analyzer to monitor multiple sample locations for greater coverage.

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