A liquid supply system is provided. The liquid supply system includes a liquid tank configured to store a liquid. The liquid supply system also includes a liquid measurement module positioned outside the liquid tank and fluidly connected two connecting ports that are located at opposite sides of a surface of the liquid stored in the liquid tank, The liquid tank includes a tube extends parallel to a height direction of the liquid tank. The liquid tank also includes a floating member located in the tube and configured to float on the liquid. The liquid tank further includes a detection member configured to emit a detection signal toward the floating member.

A method is provided for refueling a cryogenic pressure vessel of a motor vehicle. The motor vehicle has: a) a cryogenic pressure vessel having an internal vessel which stores a fluid, an external vessel and heat insulation which is arranged between the internal vessel and the external vessel, at least in certain areas; and b) a controller, wherein the controller is designed to interrupt refueling of the motor vehicle if, in the case of damaged thermal insulation, a lower fluid density limiting value for the fluid in the internal vessel is exceeded. The lower fluid density limiting value is lower than an upper fluid density limiting value for the fluid in the internal vessel in the case of refueling of the internal vessel with intact thermal insulation.

A method is provided for refueling a cryogenic pressure vessel of a motor vehicle. The motor vehicle has: a) a cryogenic pressure vessel having an internal vessel which stores a fluid, an external vessel and heat insulation which is arranged between the internal vessel and the external vessel, at least in certain areas; and b) a controller, wherein the controller is designed to interrupt refueling of the motor vehicle if, in the case of damaged thermal insulation, a lower fluid density limiting value for the fluid in the internal vessel is exceeded. The lower fluid density limiting value is lower than an upper fluid density limiting value for the fluid in the internal vessel in the case of refueling of the internal vessel with intact thermal insulation.

An environmentally friendly fuel distribution station includes an upper canopy, said upper canopy including a fuel tank and an outer shell enclosing said fuel tank, and a fuel distribution interface suspended from said upper canopy, said fuel distribution interface selectively distributing fuel from said fuel tank during a fueling operation.

An environmentally friendly fuel distribution station includes an upper canopy, said upper canopy including a fuel tank and an outer shell enclosing said fuel tank, and a fuel distribution interface suspended from said upper canopy, said fuel distribution interface selectively distributing fuel from said fuel tank during a fueling operation.

In one aspect, a system for monitoring a level of hydraulic fluid in an agricultural sprayer includes a drive system, a hydraulic fluid system, and a fill level sensor. The system also includes a computing system communicatively coupled to both the drive system and the fill level sensor. The computing system is configured to monitor the level of hydraulic fluid within the hydraulic fluid reservoir based on data received from the fill level sensor. The computing system is further configured to detect a leak condition in the hydraulic fluid system based at least in part on the monitored level of the hydraulic fluid within the hydraulic fluid reservoir and control an operation of the drive system to reduce the ground speed of the agricultural sprayer in response to detecting the leak condition.

An unmanned self-sustained fuel dispensing station for fuels of all sorts (gasoline, pesticides, water, fertilizers etc.) a tank, docking, and coupling system for unmanned aerial vehicles (UAV) of the vertical takeoff types. The station can be independent of public power and communication utilities and can operate by remote control without an on-site attendant. The preferred system has a central command center with a control computer in communication with a station control computer located at one or more satellite stations through a communications link. The station control computer can be controlled remotely by the command center. The station control computer programming has control over the activities of the station through an electrical generation subsystem with a solar array, battery bank, battery charger and standby generator; a fuel dispensing subsystem; a security subsystem with video cameras; a communications link and a status sensor subsystem.

An unmanned self-sustained fuel dispensing station for fuels of all sorts (gasoline, pesticides, water, fertilizers etc.) a tank, docking, and coupling system for unmanned aerial vehicles (UAV) of the vertical takeoff types. The station can be independent of public power and communication utilities and can operate by remote control without an on-site attendant. The preferred system has a central command center with a control computer in communication with a station control computer located at one or more satellite stations through a communications link. The station control computer can be controlled remotely by the command center. The station control computer programming has control over the activities of the station through an electrical generation subsystem with a solar array, battery bank, battery charger and standby generator; a fuel dispensing subsystem; a security subsystem with video cameras; a communications link and a status sensor subsystem.

A photolithography system includes a variable-volume buffer tank, a dispensing system connected to the buffer tank, and a valve configured to release gas from a head space of the buffer tank while blocking the release of liquid from the head space. A storage container has an opening at the bottom and drains to the buffer tank through that opening. The buffer tank has a storage capacity sufficient to receive the full contents of the storage container. The system supplies chemical solutions to the dispensing system while keeping the chemical solutions from contact with air and other gases.

A photolithography system includes a variable-volume buffer tank, a dispensing system connected to the buffer tank, and a valve configured to release gas from a head space of the buffer tank while blocking the release of liquid from the head space. A storage container has an opening at the bottom and drains to the buffer tank through that opening. The buffer tank has a storage capacity sufficient to receive the full contents of the storage container. The system supplies chemical solutions to the dispensing system while keeping the chemical solutions from contact with air and other gases.