A system, as an engine with a crankcase containing oil or a fluid mixed with oil, has a reservoir containing liquid that extends up to a level of the fluid. A dipstick support structure supports a dipstick on it so that the dipstick extends into the fluid past the level of the fluid, and so that the dipstick is manually removable from the dipstick support structure by a user. An electrical system is connected with the dipstick, and the electrical system electrically senses the level of the fluid based on an electrical characteristic of the dipstick that varies with the varying level of the fluid when the dipstick extends into it. The electrical characteristic may be capacitance of the dipstick detected by sequential charging and discharging of the dipstick to produce a square wave electrical signal the frequency of which corresponds to the level of fluid.

A fluid port assembly includes a tube configured for positioning with a fluid container to provide access to a fluid contained in the fluid container. The tube includes at least one annular tube recess. The at least one annular tube recess forms a plurality of inner tube surfaces extending circumferentially within the tube. The assembly includes a plug configured for positioning inside the tube to releasably seal the fluid container and contain the fluid within the fluid container. The plug includes at least one annular plug protrusion, and the at least one annular plug protrusion forms a plurality of outer plug surfaces extending circumferentially around the plug. The plurality of inner tube surfaces of the tube interfaces with the plurality of outer plug surfaces of the plug to seal the fluid container.

A fluid port assembly includes a tube configured for positioning with a fluid container to provide access to a fluid contained in the fluid container. The tube includes at least one annular tube recess. The at least one annular tube recess forms a plurality of inner tube surfaces extending circumferentially within the tube. The assembly includes a plug configured for positioning inside the tube to releasably seal the fluid container and contain the fluid within the fluid container. The plug includes at least one annular plug protrusion, and the at least one annular plug protrusion forms a plurality of outer plug surfaces extending circumferentially around the plug. The plurality of inner tube surfaces of the tube interfaces with the plurality of outer plug surfaces of the plug to seal the fluid container.

An apparatus for determining the identity, location, or level of one or more material phases or the location of an interface between two material phases within a defined volume having, a linear array of units configured to generate and detect electromagnetic radiation; an elongate enclosure containing the array of units, being at least partially transparent to the electromagnetic radiation generated by the units; the apparatus being configured to be at least partially submerged within the one or more material phases within the defined volume, the linear array of units being configured to generate transmission signals through the at least partially transparent elongate enclosure to the one or more material phases surrounding the enclosure at locations along the length of the enclosure, and to receive return signals through the elongate enclosure at locations along the length of the enclosure from the one or more material phases surrounding the enclosure.

The present invention concerns a solids discharge module (1) for discharging solids out of devices (100) carrying mixed fluid, in particular comminuting devices for solids contents in a mixed fluid, comprising a solids inlet (3), coupling means (31) for connecting the solids inlet (3) to a device (100) carrying a mixed fluid, a solids outlet (5), a closing member (9) which is arranged at the solids outlet (5) and is reciprocable between a release position and a blocking position, and a conveyor chamber (7) extending from the solids inlet (3) to the solids outlet (5). According to the invention it is proposed that a filling state detector (13) is provided which is adapted to detect and display a solids accumulation in the conveyor chamber (7).

The present invention concerns a solids discharge module (1) for discharging solids out of devices (100) carrying mixed fluid, in particular comminuting devices for solids contents in a mixed fluid, comprising a solids inlet (3), coupling means (31) for connecting the solids inlet (3) to a device (100) carrying a mixed fluid, a solids outlet (5), a closing member (9) which is arranged at the solids outlet (5) and is reciprocable between a release position and a blocking position, and a conveyor chamber (7) extending from the solids inlet (3) to the solids outlet (5). According to the invention it is proposed that a filling state detector (13) is provided which is adapted to detect and display a solids accumulation in the conveyor chamber (7).

An oil level monitoring system includes a tube that may be fluidly coupled to an internal combustion engine. Thus, the tube may be in fluid communication with an oil reservoir in the internal combustion engine. A monitoring unit is removably inserted into the tube. The monitoring unit may be in fluid communication with the oil reservoir. The monitoring unit is substantially hollow. Thus, oil from the oil reservoir may be contained within the monitoring unit when the monitoring unit is inserted into the tube. The monitoring unit is comprised of a translucent material. Thus, the monitoring unit facilitates a level of the oil to be observed within the oil reservoir when the monitoring unit is removed from the tube.

An oil level monitoring system includes a tube that may be fluidly coupled to an internal combustion engine. Thus, the tube may be in fluid communication with an oil reservoir in the internal combustion engine. A monitoring unit is removably inserted into the tube. The monitoring unit may be in fluid communication with the oil reservoir. The monitoring unit is substantially hollow. Thus, oil from the oil reservoir may be contained within the monitoring unit when the monitoring unit is inserted into the tube. The monitoring unit is comprised of a translucent material. Thus, the monitoring unit facilitates a level of the oil to be observed within the oil reservoir when the monitoring unit is removed from the tube.

An oil level gauge mounting structure includes an oil level gauge, a dipstick insertion hole, a peripheral wall, and an opening portion. The oil level gauge includes a grip portion and a dipstick. The grip portion has a finger insertion hole which defines a finger insertion direction for the finger insertion hole and into which a finger of an operating person is to be inserted from the finger insertion direction for the finger insertion hole. The peripheral wall surrounds the grip portion from directions except the finger insertion direction for the finger insertion hole so as to define an insertion recess portion to receive the grip portion in a state in which the dipstick is inserted in the dipstick insertion hole. The opening portion is open in the finger insertion direction for the finger insertion hole in the state in which the dipstick is inserted in the dipstick insertion hole.

An oil level gauge mounting structure includes an oil level gauge, a dipstick insertion hole, a peripheral wall, and an opening portion. The oil level gauge includes a grip portion and a dipstick. The grip portion has a finger insertion hole which defines a finger insertion direction for the finger insertion hole and into which a finger of an operating person is to be inserted from the finger insertion direction for the finger insertion hole. The peripheral wall surrounds the grip portion from directions except the finger insertion direction for the finger insertion hole so as to define an insertion recess portion to receive the grip portion in a state in which the dipstick is inserted in the dipstick insertion hole. The opening portion is open in the finger insertion direction for the finger insertion hole in the state in which the dipstick is inserted in the dipstick insertion hole.