The present invention improves the technology for detecting the level of a reagent in a container using changes of the capacitance, for instance, of an aspiration tube for aspirating the reagent from the container. The present invention can eliminate noises to detection of the capacitance caused by metals surrounding the container and changes of the moving speed of aspiration tube. Changes of the capacitance are detected using an empty container and recorded. The recorded changes are subtracted from changes of the capacitance measured with a container containing a reagent to eliminate the noises to the detection of changes of the capacitance.

A connecting device is provided, including a control apparatus, an energy storage apparatus, an input connection, and an output connection, the input connection being connected to the energy storage apparatus by means of a charging apparatus, the charging apparatus being configured for controlled charging of the energy storage apparatus, the control apparatus being configured, after reaching a preset charge state of the energy storage apparatus, to connect the energy storage apparatus to the input connection; and the control apparatus also being configured, during and/or following connection of the energy storage apparatus to the input connection, to connect the input connection to the output connection.

A monitoring system for an access chamber to a pipe network. The system comprises at least one sensor for determining a fluid condition associated with fluid in a conduit of the pipe network and at least one threshold level indicator for determining a threshold fluid level in the access chamber, the at least one threshold level indicator being associated with the at least one sensor. The system further comprises a controller for receiving output signals from the at least one sensor and the at least one threshold level indicator and for controlling supply of power to the at least one sensor and a wireless transceiver in communication with the controller to allow the controller to communicate with a remote server over a communications network. The controller is arranged to supply power to the at least one sensor in response to receiving an output signal from the at least one threshold level indicator indicative of the fluid level having exceeded the threshold fluid level.

Measuring sensor, in particular of a level of a liquid, in particular for the lubricating oil of an internal combustion engine, the sensor comprising a body with a longitudinal extension with at least one related intermediate portion having cylindrical symmetry with respect to said longitudinal extension and a bushing internally complementary to said intermediate portion, so that said body can freely rotate in the bushing with respect to said longitudinal extension and wherein the bushing externally comprises fixing means for fixing the sensor to an opening of a container of said liquid.

A level sensing apparatus (110) for attachment to a sounding tube to measure levels of content in a tank. The level sensing apparatus includes a housing (16) for enclosing components of the level sensing apparatus (20). These components include a transmitter and an antenna (18) operatively connected to the transmitter for directing electrical or mechanical waves in a direction away from the transmitter. The antenna is adapted to also receive electrical and mechanical waves. The apparatus further includes a sounding tube adaptor (32) sized for attachment to a sounding tube, and a connector assembly operatively attaching the housing to the sounding tube adaptor. The connector assembly enabling the housing to rotate relative to the sounding tube adaptor about a horizontal axis to expose an open end of the sounding tube. In use, the level sensing apparatus allows for pulse radar measurement of liquid levels in the tank. The housing may be rotated relative to the sounding tube to also allow for manual level measurements or sampling of the tank contents.

The embodiments disclosed herein relate to an apparatus for monitoring a fluid level in a returns tank in the oil and gas industry, the apparatus having a sensor configured to monitor the fluid level of the returns tank, wherein the sensor is located within the tank; and a communication device configured to transmit the fluid level from the sensor to a programmable logic controller

A fluid heating apparatus for heating fluid on a fluid path may comprise a fluid pump, a fluid heater, a temperature sensor to sense fluid temperature and generate a temperature signal, and a temperature control assembly configured to control the temperature of the fluid. The control assembly may comprise a target temperature input to receive a target temperature, a pump control to control operation of the fluid pump to control a flow rate of the fluid, and a heater control to control operation of the fluid heater to control a degree of heat output by the fluid heater. The temperature control assembly may be configured to increase and decrease fluid flow along the fluid path and to increase and decrease heat output of the fluid heater to control the temperature of the fluid at the fluid outlet.

Disclosed is an intelligent measurement cup, comprising a cup body and a cup cover, which covers the cup body and has an electronic module provided therein. The electronic module comprises a battery, a main control circuit board electrically connected to the battery, and a laser detection unit electrically connected to the main control circuit board. The laser detection unit comprises a laser probe and a transparent shielding sheet which covers the laser probe. The laser probe is arranged at a side facing toward the cup body. A through hole is formed in the cup cover in a manner of corresponding to the laser probe so as to allow light of the laser probe to pass through. A laser emitted from the laser probe penetrates the shielding sheet and is then incident in the cup body in a scattered manner, so as to ensure that sufficient feedback photons are formed. The spectra reflected back through different emission media are different, therefore, the conditions of a liquid, conditions comprising the remaining amount, the type, whether the liquid has deteriorated, etc., in the cup body can be accurately detected.

A load estimating device measures a voltage and a current supplied to a load connected with a generator, calculates a feature amount of the load, senses a remaining amount of fuel, outputs a time during which the load is continuously operable. The device estimates what the load connected with the generator is, based on the calculated feature amount and the feature amounts stored in a storage, and determines the time during which the estimated load is continuously operable, based on a power consumption of the estimated load, and the remaining amount of fuel. The device has a load registration mode for causing the storage to store therein a feature amount of a new load that is not stored in a storage.

A load estimating device measures a voltage and a current supplied to a load connected with a generator, calculates a feature amount of the load, senses a remaining amount of fuel, outputs a time during which the load is continuously operable. The device estimates what the load connected with the generator is, based on the calculated feature amount and the feature amounts stored in a storage, and determines the time during which the estimated load is continuously operable, based on a power consumption of the estimated load, and the remaining amount of fuel. The device has a load registration mode for causing the storage to store therein a feature amount of a new load that is not stored in a storage.