A dosing system and method for dispensing a chemical composition into a tank of a toilet. The system includes a sensor obtaining a parameter representative of an environment of the toilet. The dosing system further includes a non-transitory control unit receiving the parameter and generating an activation signal for triggering dispensing of an amount of the chemical composition into the tank based on the parameter. The system further includes a dosing device inserted inside the tank. The dosing device has a cavity containing the chemical composition and a dispensing mechanism coupled with the cavity. The dispensing mechanism receives the activation signal and dispenses the amount of chemical composition into the tank upon reception of the at least one activation signal.

A dosing device for dispensing a predetermined amount of liquid, in particular a predetermined amount of water, has a housing with a liquid inlet, a liquid outlet, and a flow channel therebetween. A valve element in the flow path can be opened and closed. A measuring device measures the flow rate through the flow channel in the direction of the liquid outlet. A controller has an operating unit or is coupled to an operating unit for signal transmission. The dosing device is actuatable by the operating unit. The controller is further coupled in terms of control technology to the valve element and to the measuring device, the controller holding the valve element in an open position or moving it to an open position when the dosing device is actuated.

At least one parameter of a material is determined with a pressing tool usable for producing a green compact and a pressing tool for producing at least one green compact. The pressing tool has at least one planar surface which is formed at least in part by a die which, starting from the surface, extends along an axial direction and, on the surface, has a cavity which extends from the surface along the axial direction and has an inner circumferential surface; wherein the cavity forms a receptacle for a powdery material which can be pressed in the cavity by at least one punch plunging into the cavity along the axial direction to form the green compact.

A system for delivery of a volume of infusible fluid. The system includes a controller configured to calculate a trajectory for delivering infusible fluid, the trajectory comprising at least one volume of fluid, and determine a schedule for delivering the at least one volume of fluid according to the trajectory, wherein the schedule comprising an interval and a volume of infusible fluid for delivery. The system also includes a volume sensor assembly for determining the at least one volume of fluid delivered, wherein the controller recalculates the trajectory based on the volume of fluid delivered.

Apparatus and associated methods relate to simultaneously pumping and measuring density of an aircraft fuel. The aircraft fuel is pumped by a centrifugal pump having an impeller. A rotational frequency of the impeller is determined while the centrifugal pump is pumping the aircraft fuel. Flow rate of the aircraft fuel through the centrifugal pump is sensed. Pressure of the aircraft fuel is measured at two different points within or across the centrifugal pump or a differential pressure is measured between the two different points while the centrifugal pump is pumping the aircraft fuel. Density of the aircraft fuel is determined based on a head-curve relation characterizing the centrifugal pump. The head-curve relation relates the fuel density to the rotational frequency, the flow rate, and pressures at the two different points or the differential pressure between the two different points.

Metered dispensing of a microfluidic amount of fluid from a reservoir comprises a pressure device which applies a discharge pressure for fluid ejection via a discharge line through a valve arrangement. The valve device has a first valve with a minimum closing time and a second valve with a minimum opening time. A control device provides control signals for operation for metered dispensing of the amount of fluid as follows: a shortened minimum opening time for freeing the discharge line for the fluid flow, which time is shorter than the minimum opening time of the second valve; and a shortened minimum closing time for closing the discharge line for the fluid flow, which time is shorter than the minimum closing time of the first valve. Furthermore, a hand-held device for locally piercing human or animal skin is disclosed.

A dispenser and methods for dispensing a material into a receptacle comprises a dispenser outlet for dispensing material into the receptacle; a support for receiving a receptacle; at least one lateral sensor positioned to laterally sense a receptacle received on the support; an upper sensor positioned to sense a receptacle received on the support from above; and a controller operatively connected to the lateral and upper sensors. The controller is configured to sense the presence of a receptacle received on the support, calculate the volume of the receptacle and/or the volume of material within the receptacle from data received from the lateral and upper sensors, and control the volume of material dispensed from the dispenser outlet into the receptacle based upon the calculated volume of the receptacle and/or the volume of material within the receptacle.

A system for precision liquid delivery includes a gas reservoir having a known volume. The system has a tightly load-coupled pneumatic driver (a “TLCP driver”) that is configured to receive input power to cause the TLCP driver to move gas into the gas reservoir to produce a gas drive pressure. A valve is configured to couple the gas reservoir with a fluid reservoir having an unknown volume. The valve is further configured to selectively isolate or pneumatically couple pressures in the gas reservoir and the fluid reservoir. A gas-fluid interface couples pressure in the fluid reservoir to pressure in a fluid path. The fluid path is configured so that the fluid drive pressure driving the liquid in the fluid path is substantially the same as the fluid reservoir pressure. The system also has a pressure sensor configured to detect pressure in the gas reservoir and/or the fluid reservoir.

A quantity of gas is introduced into a gas reservoir via a filling station provided with a filling line. The quantity is measured. A signal is generated indicating a corrected quantity of transferred gas. The signal is obtained by adding a predetermined, positive or negative, corrective amount to the measured quantity of gas transferred.

A metering device for bulk material has a metering container with an outlet opening provided with a rim. A slide is connected to a slide drive and closes the outlet opening. The slide is provided with a slide rim. The rim of the outlet opening and the slide rim, as a function of a displacement travel of the slide in a displacement direction, determine a travel-dependent outlet cross section of the outlet opening. The rim of the outlet opening; or the slide rim; or the rim of the outlet opening and the slide rim extend at a slant to the displacement direction of the slide.