Abstract: A hydrometer embodied as self-contained buoyant structure that reacts to the buoyant force of a fluid by equilibrating at a tilt. The tilt of the structure can then be used to calculate the specific gravity of the fluid. In one embodiment, an accelerometer for measuring the inclination of the buoyant structure, a radio for transmitting the data wirelessly and a battery is contained within the buoyant structure, which allows for a convenient, and efficient automated process for monitoring the specific gravity of a liquid.

Abstract: The present invention relates to a novel device that enables a person to gauge the brine density in solar salt works from afar without recourse to sampling of the brine. The device—which can be considered as an improvisation over the conventional laboratory type Baume meter—an be placed directly in the salt pa. The device remains sunk, and therefore invisible, until the desired density of brine is approached. Thereafter it gradually floats up and becomes visible from afar. From appropriate markings on the rod connected to the top end of the device, it can be gauged whether the brine is yet to attain the desired density, or has attained the desired density range, or has exceeded the desired density range. The device is resistant to corrosion and able to combat extreme weather conditions prevailing in solar salt works. The control of brine density from afar helps eliminate the need for frequent sampling of brine for density measurement that would make adherence to the optimum process of salt production easier.

Abstract: The present invention relates to a novel device that enables a person to gauge the brine density in solar salt works from afar without recourse to sampling of the brine. The device—which can be considered as an improvisation over the conventional laboratory type Baume meter—can be placed directly in the salt pan. The device remains sunk, and therefore invisible, until the desired density of brine is approached. Thereafter it gradually floats up and becomes visible from afar. From appropriate markings on the rod connected to the top end of the device, it can be gauged whether the brine is yet to attain the desired density, or has attained the desired density range, or has exceeded the desired density range. The device is resistant to corrosion and able to combat extreme weather conditions prevailing in solar salt works.

Abstract: Disclosed herein is an alcohol content and temperature measuring instrument which is simply composed of a mug, an embolism an observation window, and a thermograph and a measuring tub. The measurement of alcohol concentration in a particular liquid can be measured according to Torricelli's law and Archimedes principle, while learn about the temperature of the liquid from the thermograph.

Abstract: An assembly and a method of securing elongated members within the assembly are provided. In particular, one or more particular elongated members which are adapted to contain a particular fluid may be affixed to a temperature-conducting (e.g., metallic) arrangement, and a portion of the assembly may be positioned within a container containing a sample fluid. For example, the temperature-conducting arrangement can be configured to provide the particular elongated member therethrough, and the particular fluid can be a sensor fluid. Further, the temperature-conducting arrangement is affixed to a further elongated member which is configured to provide the temperature-conducting arrangement therethrough. Moreover, the metallic arrangement may maintain a temperature of the particular fluid is provided so that it is substantially the same as a temperature of the sample fluid.

Abstract: The present invention relates to a method and device for a self orienting floating apparatus which utilizes an external magnetic field to maintain a constant orientation, and specifically relates to a plain form hydrometer, a floating thermometer, and a thermohydrometer that continuously display a graduated scale in an operator pre-determined direction.

Abstract: An improved float and valve assembly for a liquid-gas accumulator including a buoyant float having a density selected in accordance with the working pressure, a float which can be lengthened or shortened, and friction and drag is reduced by optimizing the bore to rod length, honing coacting parts, providing a crown engaging the spring, and providing grooves in the exterior of the valve stem.

Abstract: In order to keep a patient from being administered an incorrect anaesthetic, an erroneous concentration of an anaesthetic or a mixture of anaesthetics, an anaesthetic system can be equipped with a device for identifying anaesthetics in anaesthetic system. The device identifies anaesthetics by determining a parameter related to a physical property, such as density, of liquid anaesthetics. A floating body can be immersed in the anaesthetic fluid. The floating body then sinks to a depth which depends on the fluid's density. The identity of the anaesthetic can then be read off a measurement stick arranged on the floating body.

Abstract: A plastic hydrometer of the constant mass variable displacement type. The hydrometer includes a separate bulbous section, stem and cap. The bulbous section is a single piece molded part having an upper end which mates with the lower end of the extruded tube.

Abstract: A tank leak detection system in which a liquid level multiplier is connected to a differential pressure transmitter one side of which may be piped back into the tank to compensate for internal changes in tank pressure. A capillary having a small bore connects the transmitter and the multiplier to reduce temperature effects. Changes in tank temperature may be sensed, i.e., by a long bulb thermometer and either fed to a temperature transmitter to convert temperature change into a single to a computer used to calculate true tank level and output a signal proportional thereto or fed to the level transmitter to compensate for temperature changes.

Abstract: Apparatus for the automotive measurement of the apparent density of mud or sludge contained in a liquid, and a system for the automatic measurement of the PONSAR index and a process for measuring said index. The apparent density of one liter of clarified liquid is obtained with the aid of electronic means for measuring the immersion difference, in a clarified liquid reservoir, of a bottle successively filled with mud and clarified liquid. Detection means make it possible to measure the mud volume decanted or settled in 1/2 hour in a cylinder filled with one liter of mud-containing liquid and 1.5 liters of clarified liquid. Thus, the calculation of the volume/weight ratio then gives the PANSAR index.

Abstract: An improved buoyant alarm device which provides an indication of a disturbance to a quiescent level of a body of water. The device includes a cover assembly and a buoyant body. The cover assembly includes a cover member and a support member. The support member provides a subassembly support for electrical components which are mounted thereto and for forming, with the cover member, an enclosed water-tight chamber for housing the electrical components.

Abstract: A density compensating float is used in conjunction with a stop-fill valve for limiting the filling of a tank. The primary application of the density compensating float is for use in LPG tanks. The compensating float includes a portion thereof having graded volumetric segments which correspond to the changes in density for a particular fluid, such as propane. For a given quantity of fluid in the tank, the float has an essentially constant angular position despite variations in the density of the fluid, and therefore changes in buoyancy of the fluid, as a result of changes in temperature. Thus, fluid at any temperature can be input into the tank and the stop-fill valve will be activated when a given quantity of fluid has been received without regard to the temperature of the fluid. This provides maximum filling of the tank while limiting the fluid to the maximum safe quantity.

Abstract: For measuring the density of fluids whose densities lie within a predetermined range and whose coefficients of thermal expansion vary within this range, a stem hydrometer has a lower body volume which extends up to the lowest marking on the density scale and is immersed when the hydrometer is buoyant in a fluid at the highest part of the density range, a scale volume which extends between the lowest and highest markings on the density scale and is immersed with the body volume when the hydrometer is buoyant in a fluid at the lowest part of the density range, and a stem volume above the highest scale marking. The body volume has a coefficient of expansion substantially equal to that of the fluid at the highest part of the range, and the scale volume is comprised of material such that the coefficient of expansion of the combined body volume and scale volume is substantially equal to that of the fluid at the lowest part of the range.

Abstract: A metric system teaching and measuring device. The device is in the form of a tubular meter stick having an internal cross sectional area of ten square centimeters producing the volume of one liter for one meter length of the stick. An attachable base provides means for closing the bottom of the stick to form a graduate cylinder. Markings provided through a one meter ruler having centimeter and millimeter markings enable the reading of volume corresponding to centiliters and milliliters respectively. In the graduate form the device may contain a 1 kilogram mass of water with each cubic centimeter or milliliter of water corresponding to 1 gram. By the use of a float the device can be used to determine the mass (or weight) of small objects heavier than the displaced fluid such as water when the object is placed inside the float using known mass of the float as tare.

Abstract: Apparatus for measuring and monitoring the state of activated sludge in the continuous treatment of waste waters or sewage. A suspensoid is produced by clarifying a quantity of the sludge-charged liquid, and the apparent weight of the sludge relative to the suspensoid is derived and is used as an indication of the state of the treatment installation. The apparatus is easily transportable and can be used on site.