A filling level indicator for determining a filling level in a tank, having a resistor network, a contact element, and a magnetic element. The contact element is spaced apart from the resistor network and the magnetic element is movable relative to the resistor network and the contact element. The contact element has a contact region deflectable by the magnetic element. An electrically conductive connection between the contact region and the resistor network is produced by deflection of the contact region. The contact region is formed by a planar tape-shaped element and the contact region has contact portions that are spaced apart from one another in the circumferential direction. The contact portions are separated from one another by separation regions.

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.

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.

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.

Disclosed herein is a telemetric fitting for a liquid-level gauge, the telemetric fitting being configured to derive liquid-level information from the liquid-level gauge when attached thereto and wirelessly transmit at radio frequencies the liquid-level information.

Disclosed herein is a telemetric fitting for a liquid-level gauge, the telemetric fitting being configured to derive liquid-level information from the liquid-level gauge when attached thereto and wirelessly transmit at radio frequencies the liquid-level information.

A liquid-level sensor provides a downwardly pendent float supported above the reservoir fill height using high clearance downwardly extending fingers and a spring that resist encrustation of the float support mechanism. The spring may be a flat helix to reduce the height of the sensing mechanism when so positioned. A sensor sealed within a sensor head electrically senses the float height through a sealed compartment to be contamination resistant.

A liquid-level sensor provides a downwardly pendent float supported above the reservoir fill height using high clearance downwardly extending fingers and a spring that resist encrustation of the float support mechanism. The spring may be a flat helix to reduce the height of the sensing mechanism when so positioned. A sensor sealed within a sensor head electrically senses the float height through a sealed compartment to be contamination resistant.

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).