A travelable distance calculation apparatus comprises: an update device 72 for recording a measured remaining fuel amount value, and also sequentially updating the recorded value; a calculation device 73 for calculating a travelable distance based on the remaining capacity of a battery and the recorded value; and a display device 80 for displaying at least the travelable distance. During a period when an engine 13 is stopped, the update device 72 holds, as the recorded value, a value recorded during operation of the engine 13.

A fluid monitoring system for monitoring a volume of a fluid source. The system includes a flow sensor coupled to a fluid line in hydraulic communication with the fluid source. The system includes a fluid monitor having a unit counter configured to: receive a flow signal from the flow sensor; and transmit a unit signal to a processor based on the flow signal and an adjustable unit value. The processor configured to determine a remaining volume value of the fluid source based on a first volume value and the unit signal. The monitor configured to calibrate the remaining volume value through adjustment of the unit value via a first set of binary rotary switches and adjustment of the first volume value via a second set of binary rotary switches. The system further includes a control panel having a plurality of flow monitors in communication with a plurality of flow sensors.

A method for alternative fuel life-cycle tracking includes electronically receiving, at a remote server, fuel data of fuel in a first container. The fuel comprises first and second batches. The fuel data includes first and second sets of alternative fuel identifiers (AFIs) associated with, respectively, a first unit of the first batch and a second unit of the second batch. The method further includes electronically receiving, at the remote server, a transfer volume of the fuel being transferred to a second container. The method further includes electronically transferring, at the remote server, first and second subsets, respectively, of the first and second sets of AFIs to be associated with the second container. The transfer of the first and second subsets is based on the transfer volume and a proportion of the first unit to the second unit.

A system includes a concentration sensor, a flow sensor, and a controller. The concentration sensor is configured to measure a concentration of a contaminant in a cabin of an aircraft. The flow sensor is configured to measure a flow rate of air into the cabin. The controller is configured to determine whether a concentration measurement of the contaminant in the cabin exceeds a first concentration threshold. The controller is configured to, in response to determining that the concentration measurement does not exceed the first concentration threshold, control the flow rate of air into the cabin based on a flow rate setpoint. The controller is configured to, in response to determining that the concentration measurement exceeds the first concentration threshold, control the flow rate of air into the cabin based on a flow rate setpoint and a correction factor that is based on a flow sensor tolerance.

An HVAC system includes a blower, a motor drive, and a controller. A benchmark rate of the flow of air provided by the blower and a corresponding benchmark power output of the motor drive associated with operation of the blower at a test condition are received. The controller determines a first motor drive frequency at which the motor drive is operating. Based on the benchmark rate and a comparison of the first motor drive frequency to the predefined motor drive frequency, a first rate of the flow of air provided by the blower is determined. At a later time, a current power output of the motor drive is determined during operation of the blower at the test condition. Based on a comparison of the current benchmark power output to the benchmark power output, an updated benchmark rate of the flow of air provided by the blower is determined.

A fluid monitoring system for monitoring a volume of a fluid source. The system includes a flow sensor coupled to a fluid line in hydraulic communication with the fluid source. The system includes a fluid monitor having a unit counter configured to: receive a flow signal from the flow sensor; and transmit a unit signal to a processor based on the flow signal and an adjustable unit value. The processor configured to determine a remaining volume value of the fluid source based on a first volume value and the unit signal. The monitor configured to calibrate the remaining volume value through adjustment of the unit value via a first set of binary rotary switches and adjustment of the first volume value via a second set of binary rotary switches. The system further includes a control panel having a plurality of flow monitors in communication with a plurality of flow sensors.

Disclosed is a system for automatically measuring a discharge in real time based on a CCTV image. The system includes: a water depth measurement device filtering water depth data measured by a measurement means with a local linear regression-based bivariate scatterplot smoothing technique through flexible bandwidth application to calculate the water depth of a stream; an image acquisition device acquiring a continuous image of a flow speed measurement side of the stream; an image analysis PC using an image of the image acquisition device to measure the surface flow speed in real time and receiving a measured water depth from the water depth measurement device to measure the discharge in real time with cross-section data; and a discharge calculation and management server for transmitting and displaying a real-time discharge measurement result based on a web.

Methods, systems, and apparatus, including computer programs encoded on a storage device, for identifying one or more water dispensing appliances that are currently using water. In one aspect, the method includes actions of obtaining a dispensing appliance signature, obtaining water consumption data that is based on first sensor data from a first sensor that is installed at the property, identifying a particular water dispensing appliance from among multiple different water dispensing appliances located at the property based on an analysis of (i) the water dispensing appliance signature and (ii) the water consumption data, and responsive to identifying the particular water dispensing appliance located at the property based on an analysis of (i) the water dispensing appliance signature and (ii) the water consumption data, generating output data based on the one or more particular water dispensing appliances that were identified.

A method is used to control a fuel level gauge of a vehicle system and includes: monitoring, via an engine controller, a fuel economy of the vehicle system; comparing, via the engine controller, the fuel economy with a predetermined fuel economy threshold to determine whether the fuel economy is less than the predetermined fuel economy threshold; adjusting, via the engine controller, a sensitivity of a display filter in response to determining that the fuel economy is less than the predetermined fuel economy threshold for a predetermined amount of time in order to maximize an accuracy of the fuel level gauge, wherein the display filter smoothes an unfiltered fuel level signal received from a fuel level sensor of the vehicle system, thereby generating a filtered fuel level signal; and controlling, via an instrument panel controller, the fuel level gauge of the vehicle system.

The disclosure relates to a dialysis machine that comprises a dialyzer, a fluid source, a first line connected to the fluid source, and a container containing bicarbonate. The container connects to the first line and the fluid flows from the fluid source, through the first line, to the container. The dialysis machine further includes a second line connected to the container, a flow rate sensor connected to at least one of the lines, a pressure sensor configured for detecting fluid pressure of the container, a display, and a data processing apparatus. The data processing apparatus is configured to receive signals from the flow rate sensor and the pressure sensor. The data processing apparatus is configured to calculate a size of the container based on the received signals.