Abstract: An electronic weighing machine for a moisture meter not only measures the amount of moisture in the test sample, but also measures the mass of the test sample itself. In addition, the present invention is related to a heat drying type moisture meter, a filter for the moisture meter and a moisture adsorption unit for the moisture meter. The electronic weighing machine for the moisture meter is used with the moisture meter which is equipped with a heating section for introducing the carrier gas into it and heating the test sample, a moisture adsorption section for adsorbing the vaporized moisture from the carrier gas flowing out of the heating section, and an electronic weighing section for determining the increase in mass of the moisture adsorption section. The electronic weighing section has a test sample weighing section and a section for measuring the mass of the collected vaporized moisture in the weighing arm of the electronic weighing unit.

Abstract: A humidity sensor which utilizes microwave energy to determine a particular humidity value, e.g., a relative humidity, a specific humidity, or a dew point, without the need for delicate moving parts. The microwave humidity sensor requires little if any maintenance over a significantly long operational life, and is capable of highly accurate humidity measurements even at the extremes (e.g., toward 0% relative humidity and toward 100% relative humidity. In the disclosed embodiment, a microwave generator/transmitter is continuously or periodically pulsed to cause a known amount of microwave energy to be propelled through a metal tube structure, e.g., a waveguide tube structure. A microwave detector measures the amount of microwave energy at the other end of the tube structure.

Abstract: An apparatus and method are described for use in the area of equalizing and measuring the quality of steam exiting multiple branches in a two-phase distribution system. The system utilizes fluid level elevational differences to provide a self-correcting mechanism so that the system may be utilized regardless of incoming fluid quality or pressure. The system does not require an inlet seperator. A system having a T-junction with upper and lower manifolds is described. Also described is a system having a differential liquid bypass and vapor branch with flow restrictions. The flow restrictions may be an orifice plate, a venturi, or a control valve.

Abstract: The apparatus for determining the dew-point and/or the content of vapor in the air, particularly for the use in radio sondes, comprises a dew-point mirror assembly, including a source of light, a reflector, a cooling element thermally coupled to the reflector, a temperature sensor for measuring the temperature of the reflector, and a detecting sensor for receiving the light emitted by the light source and reflected by the reflector. The detecting sensor is located in a temperature stabilized region of the apparatus and optically coupled to the reflector by means of a light wave conductor. The light source is an incandescent lamp. A sensor head is provided that receives the reflector, the cooling element, the light source, and the input end of the light wave conductor. The sensor head is heated by means of an active heating element.

Abstract: A vapor sensing device that is sufficiently small and lightweight to be handheld, and also modular so as to allow the device to be conveniently adapted for use in sensing the presence and concentration of a wide variety of specified vapors as resulting from gases released during either decomposition and spoilage of food stuffs, or as released into either the breath or body fluids of a sick patient being medically diagnosed. The device provides these benefits using a sensor module that incorporates a sample chamber and a plurality of sensors located on a chip releasably carried within or adjacent to the sample chamber. Optionally, the sensor module can be configured to be releasably plugged into a receptacle formed in the device. Vapors are directed to pass through the sample chamber, whereupon the sensors provide a distinct combination of electrical signals in response to each.