A terminal of a liquid surface detection apparatus includes: a connecting portion that is provided in a connecting area exposed from a body; a bent portion that is continuous with the connecting area while the bent portion is bent on a bending side where the connecting area is exposed; and a projecting wall portion that is formed continuously with the connecting area together with a side of a base of the bent portion, while the projecting wall portion projects in a form of a standing wall from the connecting area. The body includes an extending portion that is securely joined to: a fixing part of a side surface of the bent portion located on a counter-bending side of the bent portion that is opposite from the bending side of the bent portion; and a fixing part of the projecting wall portion.

An improved fluid level sensor includes a radially magnetized magnet integrated into a float, and a Hall sensor adapted to monitor the magnet field emitted from the magnet. This arrangement provides a continuously variable signal across a range of travel, such that a controller receiving the signal can produce precise fluid level measurements and detect operational states of an associated device based on fluid behavior. In addition, the present fluid level sensor is suitable for use in harsh service environments, both because it is physically resilient to fouling, and because the controller is capable of detecting fouling by sensor behavior. In the context of a steam cooker, the present fluid level sensor can also sense low-water, overfill and fouling conditions, while remaining relatively insensitive to food residue, water scale buildup, corrosion and foaming.

A liquid level control module comprising an elongated tubular housing immersible through a surface of a liquid and into a bulk volume of the liquid, and first, second, and third electrical switches, and first and second floats movable along the tubular housing. The first electrical switch is disposed within a lower portion of the tubular housing, the second electrical switch is disposed within an intermediate portion of the tubular housing, and the third electrical switch is disposed within an upper portion of the tubular housing. Each of the switches has an open state and a closed state. Motion of the first float relative to the first switch changes its state. Motion of the second float relative to the second switch changes its state, and motion of the second float relative to the third switch changes its state. Thus a two-float module may provide three level control signals.

A device for the treatment of fluid mixtures containing gases, such as in particular hydrogen, air, nitrogen or noble gases, and liquids, such as in particular ionic liquids, hydraulic oil or process liquids, having at least one separating stage (30) for separating the fluid mixture into a gas portion and a liquid portion, which, routed into a collection space (32), results in a float (44) rising, which, at a predeterminable liquid level in the collection space (32), actuates, without contact, a sensor device (42), which preferably actuates a discharge device for the purpose of draining the collection space (32), resulting in the lowering of the float (44), is characterized in that the outer circumference of the float (44) is guided axially displaceably along the inside of the housing wall (54) of the collection space (32), and in that the float (44) has at least one point of passage (50) for gas and/or liquid, which interconnects parts of the collection space (32) in a media-conveying manner, which parts are spatially separated from one another by the float (44).

A device for the treatment of fluid mixtures containing gases, such as in particular hydrogen, air, nitrogen or noble gases, and liquids, such as in particular ionic liquids, hydraulic oil or process liquids, having at least one separating stage (30) for separating the fluid mixture into a gas portion and a liquid portion, which, routed into a collection space (32), results in a float (44) rising, which, at a predeterminable liquid level in the collection space (32), actuates, without contact, a sensor device (42), which preferably actuates a discharge device for the purpose of draining the collection space (32), resulting in the lowering of the float (44), is characterized in that the outer circumference of the float (44) is guided axially displaceably along the inside of the housing wall (54) of the collection space (32), and in that the float (44) has at least one point of passage (50) for gas and/or liquid, which interconnects parts of the collection space (32) in a media-conveying manner, which parts are spatially separated from one another by the float (44).

A drainage assembly and a sink are provided. The drainage assembly includes a base body. Two ends of the base body are provided with an input port and an output port respectively. The input port is communicated with the output port by a flow channel located in the base body. The flow channel includes an upper chamber communicated with the input port and a lower chamber communicated with the output port. The base body is provided with a switch mechanism configured to control connection and disconnection between the upper chamber and the lower chamber. The base body is provided with a water inlet connector and a liquid level measurement connector that are separately communicated with the upper chamber. The drainage assembly and the sink have liquid level measurement and water supply functions in addition to a drainage function.

The refrigerant compressor includes a compressor casing (2); an oil sump (13) arranged in the compressor casing (2); and an oil level sensor arrangement (14) configured to detect an oil level in the oil sump (13), the oil level sensor arrangement (14) including a tubular element (16) secured to the compressor casing (2) and a floating element (17) surrounding the tubular element (16) and being movably mounted with respect to the tubular element (16). The compressor casing (2) includes a passage opening (24) and dimensions of the tubular element (16), the floating element (17) and the passage opening (24) are defined to allow an insertion and a removal of the tubular element (16) and the floating element (17) into and out of the compressor casing (2) through the passage opening (24).

There is provided a fluid level sensing device for monitoring a fluid level in an engine container. The fluid level sensing device comprises a floating device moveable in response to changes in the fluid level, the floating device including a magnetic element, and a sensing circuit comprising at least one solid state magnetic sensor and at least one transistor electrically connected to the at least one solid state magnetic sensor. The magnetic element is configured to activate the at least one solid state magnetic sensor when the floating device is proximate thereto, the at least one solid state magnetic sensor configured to, when activated, drive the at least one transistor to generate a sensing signal indicative of the fluid level.

A full charge notification device of a urea water tank for a vehicle is provided. The device is configured to generate a predetermined sound when urea water is normally injected into the urea water tank before a full state, to provide a notification to a user of a full state of the urea water tank through non-generation of the sound.

A full charge notification device of a urea water tank for a vehicle is provided. The device is configured to generate a predetermined sound when urea water is normally injected into the urea water tank before a full state, to provide a notification to a user of a full state of the urea water tank through non-generation of the sound.