A fluid level sensor system is disclosed for sensing a fluid level in a well. The system has a main body and an inlet housing coupled to the main body. The inlet housing has an internal chamber in communication with an ambient environment within the well. A bellows within the main body communicates with the internal chamber of the inlet housing. A movable element is responsive to movement of the bellows. A sensor detects when the movable element moves from a first position, indicating a first fluid level in the well, to a second position indicating a second fluid level within the well. An indicator is operably associated with the movable element and moves into a position to be viewable when the sensing element is moved to the second position, to provide a visual indication that the second fluid level has been reached.

Disclosed are various embodiments of a drum treatment assembly that is configured to remote waste fluid contained within a drum. In one example, among other, drum treatment assembly includes a drum lid with an aperture and a treatment assembly that is suspended from the aperture in the drum lid. The treatment assembly can include a motor enclosure for a motor and a motor coupler. The treatment assembly can also include a skimmer assembly that is attached to the motor coupler. The skimmer assembly can include a belt system for moving a belt along a longitudinal axis of a drum and a trough. The trough can comprise a belt scraper and a trough aperture, in which the belt scraper is configured to remove waste attached to the belt. The trough aperture is configured to connect to a drainage tube for draining the waste out of the drum.

A system and method for efficiently measuring the fluid level in a container having a non-uniform cross sectional area is described. The measuring device may be immersed in the fluid and have a float slidable along a structure having the capability to sense an aspect of the location of the float. Since the accuracy requirements in measuring the fluid level may be more important for the higher levels and the lower levels than the intermediate quantities, the sensor may likewise be configured to provide more accurate measurements near the upper and lower fill levels. The position of a float may be determined by capacitive optical or magnetic sensing techniques and the sensed position translated into engineering units for output by a calibration table.

The present disclosure provides methods for the automated control of aspects of slide preparation in an automated slide preparation instrument. Aspects of the methods include automated assessments of reagent amounts, quality and performance as well as automated adjustments of reagents based on such assessments, including the adjustment of reagent amounts, e.g., as present in reagent baths, the adjustment of reagent compositions and the replacement of reagents. Devices and systems useful in performing the described methods are also provided herein.

A liquid level detecting apparatus of a tank for a vehicle is provided. The apparatus includes a main detecting part that detects the liquid level of the liquid in a tank to output a liquid level detection signal corresponding to the liquid level and an auxiliary floater assembly that has an auxiliary floater provided to float on the liquid surface of the liquid in the tank. A gyro sensor is mounted to the auxiliary floater, and an angle detection signal corresponding to an inclined angle of the tank is output by the gyro sensor. A controller determines a final liquid level value by correcting a liquid level value obtained from the liquid level detection signal based on the angle detection signal.

A capacitive level-sensor device comprises: a circuit substrate made of electrically insulating material (20) that extends longitudinally according to a level-sensing axis; a first array of electrodes or capacitive elements on a sensing region (23) of the circuit substrate (20), which comprises at least one first series of first electrodes (J.sub.1-J.sub.n) coplanar to one another at a major face of the circuit substrate (20); a circuit, which comprises circuit components associated to a second region (24) of the circuit substrate (20); anda casing body (14-16), which comprises at least: a sensing portion (15), which is electrically insulating and fluid-tight and coats at least the sensing region (23) of the circuit substrate (20); and a mounting portion (14, 16), which coats at least partially the second region (24) of the circuit substrate (20) and is configured for fluid-tight fixing at an opening (6) of a container (1). The sensing portion (15) and at least part of the mounting portion (14, 16) comprise at least one material (M) overmoulded on at least part of the circuit substrate (20). The second region (24) of the circuit substrate (20) includes at least one restricted substrate portion (30), having a substrate width (Wr) smaller than the substrate width (W) of the sensing region (23). At least part of the at least one restricted substrate portion (30) extends axially in the mounting portion (16).

A method of determining a status of a floating roof of a storage tank using a radar level gauge system arranged above the floating roof, the radar level gauge system being controllable to selectively evaluate reflected energy traveling towards the radar level gauge system in each propagation direction of a plurality of different propagation directions, the method comprising the steps of: radiating, by the radar level gauge system, an electromagnetic transmit signal towards the floating roof; receiving, by the radar level gauge system, an electromagnetic reflection signal resulting from reflection of the transmit signal at the floating roof; selectively evaluating, by the radar level gauge system based on the reflection signal, reflected energy traveling from the floating roof towards the radar level gauge system in each propagation direction of the plurality of different propagation directions; and determining the status of the floating roof based on the selective evaluation.

A method of determining a status of a floating roof of a storage tank using a radar level gauge system arranged above the floating roof, the radar level gauge system being controllable to selectively evaluate reflected energy traveling towards the radar level gauge system in each propagation direction of a plurality of different propagation directions, the method comprising the steps of: radiating, by the radar level gauge system, an electromagnetic transmit signal towards the floating roof; receiving, by the radar level gauge system, an electromagnetic reflection signal resulting from reflection of the transmit signal at the floating roof; selectively evaluating, by the radar level gauge system based on the reflection signal, reflected energy traveling from the floating roof towards the radar level gauge system in each propagation direction of the plurality of different propagation directions; and determining the status of the floating roof based on the selective evaluation.

Systems and methods are provided for anesthetic agent level sensing. In one embodiment, a system for an inductive level sensor for an anesthetic vaporizer includes a measurement target positioned around a rod that extends within a chamber configured to hold liquid anesthetic agent, the rod configured to be at least partially submerged in the liquid anesthetic agent and the measurement target configured to slide vertically along a length of the rod and rest on a surface of the liquid anesthetic agent, and a strip of inductive transmitter coils and receiver coils positioned external to the chamber, a length of the strip aligned with the length of the rod, the transmitter coils configured to generate a magnetic field that surrounds the rod and the measurement target and the receiver coils configured to sense changes in the generated magnetic field at a vertical location of the measurement target on the rod.

A milk meter for measuring a flow rate of a milk flow with an inlet and an outlet a liquid flow path from the inlet to the outlet, a stabilization chamber in the liquid flow path and a float in the stabilization chamber configured to float on milk the milk meter is configured so a level of milk in the stabilization chamber depends on the flow rate of the milk flow, and is provided with a magnetic unit in the stabilization chamber, the magnetic field varies in a height direction of the stabilization chamber, an electronic measuring unit is arranged in the float for measuring the strength of the magnetic field, the strength is a measure of the height within the stabilization chamber at which the float is floating on the milk and the strength of the magnetic field is a measure of the flow rate of the milk flow.