25479 results about "Water level" patented technology

A device and a method for measuring body fluid-related metrics using spectrophotometry to facilitate therapeutic interventions aimed at restoring body fluid balance. The specific body fluid-related metrics include the absolute volume fraction of water in the extravascular and intravascular tissue compartments, as well as the shifts of water between these two compartments. The absolute volume fraction of water is determined using algorithms where received radiation measured at two or more wavelengths are combined to form either a single ratio, a sum of ratios or ratio of ratios of the form log[R(λ1) / R(λ2)] in which the received radiation in the numerator depends primarily on the absorbance of water and the received radiation in the denominator depends primarily on the absorbance of water and the sum of the absorbances of non-heme proteins, lipids and water in tissue. The difference between the fraction of water in the intravascular fluid volume (“IFV”) and extravascular fluid volume (“EFV”) compartments are also determined using a differential method that takes advantage of the observation that pulsations caused by expansion of blood vessels in the skin as the heart beats produce changes in the received radiation at a particular wavelength that are proportional to the difference between the effective absorption of light in the blood and the surrounding tissue. This difference, integrated over time, provides a measure of the quantity of the fluid that shifts into and out of the capillaries. A mechanism for mechanically inducing a pulse is built into the device to improve the reliability of measurements of IFV−EFV under weak-pulse conditions.

A system for detecting water leaks is described. In one embodiment, the system includes a plurality of sensors, selected from a moisture sensor, a water level sensor, and / or a water temperature sensor. A processor collects moisture readings from the sensors. In one embodiment, the processor reports a possible water leak when a moisture sensor detects moisture above a moisture threshold value. In one embodiment, the processor report a water leak when the water level reading exceeds a water threshold value and / or when the temperature reading exceeds a temperature threshold value.

Apparatus and methods for employing electrical properties of water to indicate the level of filtered water in a filtered water container. The container is fitted with a hopper that holds unfiltered water. The hopper is fitted at its base with a removable and replaceable filter cartridge. Water is filtered by draining through the filter medium contained in the filter cartridge into the lower portion of the container. The water level in the lower portion of the container is monitored by means of one or more water level detector strips in the lower portion of the container. The detector strips are in electrical communication with a detection circuit and a control unit. The control unit uses the detection strips to monitor water level and uses such data to track filtered water consumption and to determine when the filter cartridge should be replaced.

An oxygen enriched boiler having a burner subassembly and a steam subassembly is disclosed. The burner subassembly has a fuel inlet, an oxidant inlet, a combustion chamber, a flue gas composition detector and a flue gas outlet. The fuel inlet provides fuel to the combustion chamber, the oxidant inlet provides an oxygen-enriched inlet stream to the combustion chamber, the combustion chamber burns the fuel and the flue gas composition detector measures at least one characteristic of the flue gas. The steam subassembly has a supply water inlet, a heat exchange zone, a water drum, a steam quality actuator and a steam outlet. The supply water inlet provides feed water to the heat exchange zone, the heat exchange zone transfers heat generated by combustion of the fuel to the water to generate steam, the water drum receives the heated water and steam from the heat transfer zone and maintains the water and steam at a selected steam pressure and water level, and the steam quality actuator regulates at least one characteristic of the steam. Flue gas characteristics, as well as other boiler performance variables, are monitored. At least one controller actuates on the oxidant injections to control combustion. The controller calculates the optimum oxidant distribution in real-time for a series of injection points to minimize undesired flue gas emissions while maintaining the desired steam conditions and boiler operating conditions.

The present invention is a wake control mechanism for watercrafts comprising flat or upwardly curved wake control plate(s) which is / are connected to the stern in a variety of ways, either fixed or adjustable, such that the water passing beneath and / or beside the transom is scooped upward by the plate(s) and the watercraft is therefore pushed deeper into the water causing a larger wake. Additionally the plate(s) may have walls so that the scooped water is held above water level thus adding weight and further increasing wake size. Adjustments to the plate(s) position may be used to control the shape as well as the size of the wake.