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| Number | Title | Issue Date |
| 7874724 | Method for sensing the liquid level in a compressor Two vertically offset thermistors for sensing a fluid such as oil and refrigerant in a compressor shell are monitored by a method that takes into account rapidly changing conditions within the shell. The system can determine the fluid's sump temperature, high/low li... | 01/25/2011 |
| 7364905 | Apparatus and method for high throughput analysis of compound-membrane interactions An article and method for high throughput and a high content investigation of compound interactions with live tissue or its substitutes under controlled conditions during compound absorption and related processes. In some variations of the illustrative embodiment, t... | 04/29/2008 |
| 7258483 | Device for measuring the level and/or the temperature in a container A device for measuring at least one of a level and a temperature of a liquid in a container includes a resistor arrangement adapted to be immersed in the liquid. An immersed length of the resistor arrangement in the liquid corresponds to the level of the liquid in t... | 08/21/2007 |
| 7181965 | Self-heated liquid level sensor A liquid level sensor comprising a thermistor probe and a power source connected to the thermistor probe to heat the thermistor probe. A cover encases the thermistor probe and includes openings allowing liquid to enter and exit an interior of the cover and contact t... | 02/27/2007 |
| 7070324 | Method and device for system and/or process monitoring The invention relates to a method and to a device for system- and/or process-monitoring in connection with a measurement apparatus that determines/monitors at least one process parameter of a medium. The method and device enable statements to be made regarding the p... | 07/04/2006 |
| 7026929 | Food information monitoring system Systems and methods for gathering data, representative of food condition information, from a plurality of remote locations and providing the information to a user together with information about the locations from which the information was gathered. The sensors may ... | 04/11/2006 |
| 7019638 | Food information monitoring system Two-stage systems and methods are provided for gathering food information and communicating the food information to a data collection apparatus. A system includes a remote unit, having a sensor device and a wireless transmitter; a translator or intermediate unit, ha... | 03/28/2006 |
| 6908226 | Method and apparatus for aspirating liquid from a container A method and apparatus for aspirating a liquid (e.g., blood) from a container uses an electrically biased thermistor element, mounted proximate the tip of a liquid-aspirating probe, to determine that the probe is safely submerged within a body of liquid to be aspira... | 06/21/2005 |
| 6776037 | Microprocessor-based liquid sensor and ice detector Apparatus and a method of operating any structural configuration of a heater and array of temperature sensors to measure with high accuracy, the level of stratified liquids like water and oil or water and gasoline and non-stratified liquids, liquid temperature, and ... | 08/17/2004 |
| 6715915 | Fluidity determination method of a packed fluid and device used in the same A method and device for determining fluidity of fluid in a pack that is moving without breaking and opening the pack by locating at least two measurement points on the surface of the pack filled with the fluid, measuring the surface temperatures of the measurement p... | 04/06/2004 |
| 6712504 | Method for determining the relative humidity of a volume of air having a temperature of 100° C or greater A method for determining the relative humidity of a volume V of air having a temperature of 100° C. or greater. The method comprises the steps of measuring the temperature TV of the volume of air and determining from that temperature the saturation vapor... | 03/30/2004 |
| 6695470 | Apparatus and method for viscosity measurement Apparatus and method for determining a change in the viscosity of a fluid, the apparatus including means for heating a portion of the fluid so that the heated portion will rise within the fluid, means for determining the heated portion's rise time, means ... | 02/24/2004 |
| 6615658 | Method and apparatus for detecting the internal liquid level in a vessel A system for detecting the level of a liquid in a vessel, comprises a detector assembly including a thermally conductive substrate supported within the vessel. One or more heaters are mounted on the substrate within the vessel. One or more temperature sen... | 09/09/2003 |
| 6568263 | Liquid level detector and system A system for detecting the level of fluid in a fluid containing vessel. The system includes a device for applying energy to a selected location on the vessel. A sensor in proximity to the location detects the energy level at the location during first and ... | 05/27/2003 |
| 6485173 | Pressure perturbation calorimetry instruments and methods A method of determining a thermal coefficient of expansion of a substance, the method including providing a first liquid holder containing a solution including the substance, and a second liquid holder containing a liquid in which the substance is not pre... | 11/26/2002 |
| 6443000 | Measuring stick and thermometer A measuring device for calculating the depth of a liquid in a container comprises a dipstick, a plurality of indicia on the dipstick and a thermometer on the elongate member which measures the temperature of the liquid in the container such that the tempe... | 09/03/2002 |
| 6435710 | Foam detector apparatus and method A foam detector apparatus has a detector probe for detecting the presence of foam in a test sample, with the probe held above the test sample surface and indicating foaming when foam rises from the test sample surface and contacts the detector probe. The ... | 08/20/2002 |
| 6338271 | Device and process for measuring the velocity of flow of a fluid A device for measuring the velocity of flow of a fluid, with at least one thermocouple (10), whose junction point is arranged in the fluid, with an a.c. power source (11) heating the thermocouple to a working temperature higher than the temperature of the... | 01/15/2002 |
| 6076960 | Method and apparatus for metering evaporation The invention relates to a method and an apparatus for metering evaporation. According to the invention the temperatures (Tk, Tm, T) are defined for a comparing piece (6) in an essentially non-evaporating state, for a comparing piece... | 06/20/2000 |
| 6048091 | Atmometer An atmometer includes a chamber having arranged in an interior region thereof a medium in fluid communication with a liquid source and adapted for releasably retaining liquid. The chamber also has at another region an opening to the surrounds over which a... | 04/11/2000 |
| 6030116 | Heat and moisture transfer characteristic measuring equipment A system capable of measuring the heat and moisture transfer characteristics of thin materials such as clothing materials and the like simultaneously and accurately so as to obtain data for evaluating the suitableness of such material, for clothing. The s... | 02/29/2000 |
| 5948978 | Induction heated mass flow sensor Sensors for measuring the flow rate of a fluid and for monitoring heat transfer. An induction-heated temperature-responsive sensor in contact with and cooled by the fluid, changes temperature in proportion to the quantity of heat removed by the fluid ther... | 09/07/1999 |
| 5922973 | Noack-type test unit Apparatus for sample volatilization and collection has a housing which includes volatilization and collection equipment mounting adaptation(s) and a pressure gage for monitoring internal pressure of such equipment. The housing can contain power and/or pow... | 07/13/1999 |
| 5908985 | Microprocessor-based liquid sensor and ice detector Apparatus and a method of operating any structural configuration of a heater and array of temperature sensors to measure with high accuracy, the level of stratified liquids like water and oil or water and gasoline and non-stratified liquids, liquid temper... | 06/01/1999 |
| 5894089 | Method and device for detecting a liquid level in a container A liquid level indicator has a transparent vessel for retaining hot water therein and a thermo-sensitive tape (thermo-tape) attached at a side wall of the vessel with the sensing side of the thermo-tape facing the side wall of the vessel. The thermo-tape ... | 04/13/1999 |
| 5827952 | Method of and apparatus for determining deposition-point temperature Acoustic-wave sensor apparatus and method for analyzing a normally liquid petroleum-based composition for monitoring deposition-point temperature. The apparatus includes at least one acoustic-wave device such as SAW, QCM, FPM, TSM or APM type devices in c... | 10/27/1998 |
| 5782131 | Flooded cooler with liquid level sensor An improved cooler with level sensor for measuring variation in the liquid refrigerant level of a refrigerant within the cooler, comprises a cooler shell for holding the refrigerant, heat exchanger tubes for carrying the liquid to be cooled, and a liquid ... | 07/21/1998 |
| 5707590 | Detergent container with thermo-chromatic level indicator Disclosed is an indicator (15, 35) for determining the level of contents in an opaque, plastic container (10, 30, 40). The container (10, 30, 40) is filled with a solid chemical (11), such as a detergent. A spray of warm or hot water (19) impinges upon th... | 01/13/1998 |
| 5692832 | Vapor removal with apparatus generally to not macroscopically disturb the surface of a liquid sample therein Vapors are removed from a vessel by a sweeping of a carrier gas gently above and/or across the surface of a solid or liquid sample and upward to an exit orifice. With an apparatus of the invention employed in a version of the sample volatility and vapor r... | 12/02/1997 |
| 5667302 | Selective volatilization and collection Selective volatilization and collection method includes providing a substance, for example, solid and/or liquid, in a contained system; providing thermal energy to the system and substance, and a current, i.e., directed mass flow, from external to the sys... | 09/16/1997 |
| 5615573 | Level detector A level detector for detecting a level of a liquid is provided with an elongated probe having opposed proximal and distal ends. In use, the distal end of the elongated probe is submerged beneath the level of the liquid with an unwetted length of the elong... | 04/01/1997 |
| 5568977 | Process and device to detect a risk of water condensation on a surface being in contact with a wet air volume A process is disclosed to detect a water condensation risk on a surface in contact with a wet air volume, which uses the steps of (a) placing a sensitive element on the surface, which initially takes a temperature corresponding to that of the surface, (b)... | 10/29/1996 |
| 5541969 | Midloop water level monitor A tank (18) forms a chamber having an upper and lower region. The tank (18) is in even elevation with a horizontal pipe (12) having a top region and a bottom region. An upper connecting pipe (14) fluidly connects the top region of the pipe (12) to the upp... | 07/30/1996 |
| 5496112 | Miniature pan evaporimeter for gauging the difference between evapotranspiration and effective rainfall An evaporimeter has first and second stacked containers for holding water and a scale for measuring the amount of water in the containers. The containers are covered by a screen and are balanced on and supported by a ground spike. An outlet is located at ... | 03/05/1996 |
| 5421202 | Liquid sensor having thermistors A sensor for detecting whether liquid is present at a location in a tank, comprises a probe placed at the location, containing a negative temperature coefficient resistor (NTC) and a positive temperature coefficient resistor (PTC) mutually connected in se... | 06/06/1995 |
| 5415024 | Composition analyzer for determining composition of multiphase multicomponent fluid mixture A composition analyzer and a method of use for determination of the masses of individual components in a multiphase multicomponent fluid system containing a gas. Data and relationships not measured by the analyzer during operation but required by the meth... | 05/16/1995 |
| 5402709 | Method and apparatus for detecting steam in a volume of air and a steam generator and a steam cooking oven using such method and such apparatus A method and apparatus are disclosed for detecting the presence of steam in a volume of air at a predetermined temperature. The apparatus includes a temperature sensor having two respective temperature build-up times representing an under steam temperatur... | 04/04/1995 |
| 5394736 | Glycol testing unit A testing unit for testing the glycol reboiler effluent, waste gas, (effluent) concentration in glycol dehydrator reboilers, which unit includes an upward-standing separator device characterized by a shell and a tube extending through the shell, for recei... | 03/07/1995 |
| 5385044 | Method of using a thermo-chromatic detergent level indicator Disclosed is an indicator (15, 35) for determining the level of contents in an opaque, plastic container (10). The container (11) is filled with a solid chemical (11), such as a detergent. A spray of warm or hot water (19) impinges upon the eroding surfac... | 01/31/1995 |
| 5330268 | Apparatus for determining the condition of a pressure transmitting fluid An apparatus for determining the boiling temperature of a brake fluid to in turn determine the water content therein includes an electrically heatable sensor element (13) immersed into the fluid under test, a power source (12) supplying a current of a con... | 07/19/1994 |
