Provided herein is an apparatus for determining a vertical density profile of a multi-layered fluid column including at least two different liquids, the apparatus comprising a plurality of measurement modules that form a vertical array of measurement modules; wherein each measurement module comprises: a support arm mounted to the elongate vertical support member and extending outwardly from the elongate vertical support member; a displacer carried on the support arm; and a force measurement device configured to measure a force attributable to a mass of the displacer mediated by a buoyancy of the displacer in the fluid column, wherein the plurality of measurement modules have a data connection to a data processing unit that is configured to process the measurement data from the plurality of measurement modules and generate a level or density profile of the fluid column.

An apparatus for determining a vertical level or density of a material column including one or more of a granular solid, a wet granular solid, a slurry, and a suspension, the apparatus having a support member; and at least one measurement module, wherein the measurement module includes a support arm mounted to the support member and extending outwardly from the support member; a displacer mounted to the support arm, and a force measurement device configured to measure a force attributable to a mass of the displacer mediated by a buoyancy of the displacer in the material column, wherein the measurement module has a data connection to a data processing unit for transmitting measurement data from the measurement module to the data processing unit to generate level or density information about the material column.

The present invention relates to methods and systems for implementing a self-test for sump system components using two-way communications between a main controller and each of the system components to check system operation and status. The self-test system is designed to remotely or locally test the installation of field wiring, system functionality and performance of equipment located in an elevator pit, a transformer vault, a transformer moat, a confined space or any other pit/ditch/sump. The benefits of this technology are: 1) ensure proper installation, 2) exercise the system that might otherwise be dormant for years, 3) avoid the costs and risks associated with entering a confined space, and 4) create an easy to implement preventative maintenance program.

In accordance with an embodiment, an ink supply device comprises an ink storage section, a float and a floating position detection device. The ink storage section is connected with an inkjet head, and stores ink to be supplied to the inkjet head. The float is arranged in the ink storage section in a floatable manner in response to a height of a liquid surface of the ink. The floating position detection device comprises a detection target arranged on the float, and a target detection section which is arranged in the ink storage section and detects that the detection target approaches. The target detection section is arranged on a wall substantially orthogonal to an axial direction of a rotating shaft of the ink storage section. An inkjet recording device of the embodiment comprises an inkjet head configured to jet ink to an image receiving medium, and the ink supply device.

A calibration cup for use in calibrating a quantity of a dessert dispensed from a product dispensing machine includes a body portion having an interior cavity, the interior cavity including a first chamber adjacent to at least a second chamber being disposed along a longitudinal width of the body portion, the first and the at least one second chamber being configured for receiving a quantity of the dessert from the product dispensing machine; and at least one opening on the body portion, the at least one opening being configured for receiving a nozzle coupled to the product dispensing machine; where the body portion is configured for self-aligning the first chamber and the at least a second chamber to the product dispensing machine.

A fuel storage system has a tank access chamber with improved monitoring, servicing and maintenance capabilities. In particular, the chamber includes a sump monitored by a liquid sensor whose proper function can be automatically checked remotely, e.g., via an electronic controller or remote manual operation. In cases where such a check indicates a need for physical inspection of the sump sensor, the present system provides for sensor removal and installation by service personnel from a location outside the tank access chamber. Thus, the present system facilitates regular inspection and routine or unplanned maintenance without the need for a person to physically enter the tank access chamber.

A method for the functional diagnosis of an electromechanical fill state measuring device in which a displacement element on a measuring wire is lowered into a filling material in a container such that in an equilibrium state, the weight of the displacement element minus a displacement element buoyancy, which depends upon at least one equilibrium volume, is determined to be equal to a resulting weight of the displacement element. The resulting weight is specified, and the specified resulting weight is kept constant by correspondingly changing the length of the measuring wire in the equilibrium state. The fill state of the filling material is ascertained using the length of the lowered measuring wire. In order to diagnose a function, the specified value of the equilibrium volume of the displacement element is changed, and the resulting change in the length of the measuring wire is ascertained on the basis of the constant equilibrium state of the resulting weight.

Methods and systems for validating a fluid level sensor having a floating element are provided. First readings are acquired from the fluid level sensor indicative of fluid levels sensed via the floating element during a first period of operation of the fluid level sensor. A validated range of fluid levels for the fluid level sensor is determined based on the first readings. At least one second reading is acquired from the fluid level sensor during a second period of operation, subsequent to the first period of operation. A starting position of the floating element for the second period of operation is determined based on the at least one second reading. When the starting position of the floating element is within the validated range, validating the at least one second reading.

A fuel storage system has a tank access chamber with improved monitoring, servicing and maintenance capabilities. In particular, the chamber includes a sump monitored by a liquid sensor whose proper function can be automatically checked remotely, e.g., via an electronic controller or remote manual operation. In cases where such a check indicates a need for physical inspection of the sump sensor, the present system provides for sensor removal and installation by service personnel from a location outside the tank access chamber. Thus, the present system facilitates regular inspection and routine or unplanned maintenance without the need for a person to physically enter the tank access chamber.

A fuel storage system has a tank access chamber with improved monitoring, servicing and maintenance capabilities. In particular, the chamber includes a sump monitored by a liquid sensor whose proper function can be automatically checked remotely, e.g., via an electronic controller or remote manual operation. In cases where such a check indicates a need for physical inspection of the sump sensor, the present system provides for sensor removal and installation by service personnel from a location outside the tank access chamber. Thus, the present system facilitates regular inspection and routine or unplanned maintenance without the need for a person to physically enter the tank access chamber.