Sensors

Oil Pipeline Fault Detection System Determines Material Permittivity at Microwave Frequencies

Researching fault location techniques for the oil industry requires data on the complex permittivity of the polyamide Rilsan at microwave frequencies. Rilsan is a vital material used in oil pipe construction. Currently there is no published data for the complex permittivity of Rilsan. The task for this project was to develop an accurate method to measure the complex permittivity of Rilsan to gain an understanding of the dielectric relaxations that occur within it. A fast, accurate method was developed using a vector network analyzer (VNA) and rectangular waveguide.

Posted in: Articles, RF & Microwave Technology, RF & Microwave Electronics, Detectors, Waveguides, Research and development, Materials properties, Test equipment and instrumentation, Test procedures, Mining vehicles and equipment
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Mass Spectrometer Saves Power While Tracking Harmful Substances

British researchers who received R&D assistance from the Missile Defense Agency (MDA) are marketing a new tool that could zero in on toxic chemicals in baby formula, lead paints in toys and on walls, and poisonous substances in the blood stream.

Posted in: Tech Transfer Reports, Detectors
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Submersible Pressure Sensors

The AST4520 media-isolated, submersible pressure sensor from American Sensor Technologies (Mt. Olive, NJ) features a flush diaphragm steel cage design with stainless steel construction for level monitoring of turbulent tanks with viscous media. It is approved to UL/cUL913 Class 1, Division 1 IS, Groups C and D with an approved barrier. The steel cage design allows for proper flow of media while keeping the sensor at the bottom of the tank or well. It also features an engraved 316L housing and Kynar PVDF cable.

Units operate at temperature ranges of -40 to 185°F and offer pressure ranges from 0-5 to 0-15 PSIG. All units come standard with EMI/RFI protection of 100V/meter and a 4-20mA output.

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Posted in: Products, Sensors
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