Abstract: Aspects and embodiments relate to a gas flow alarm apparatus and gas flow alarm method. The apparatus comprises: a device configurable to introduce back pressure into a flow of gas, a supply sensor configured to determine whether gas flow to the device is enabled; a pressure sensor configured to determine whether a flow of gas through the device has developed back pressure; and logic circuitry in communication with the supply sensor and the pressure sensor configured to determine whether gas flow to the device is enabled and whether a flow of gas through the device has developed back pressure and, if not, to activate an alarm condition. Aspects and embodiments can provide a system which operates to warn a user against various adverse conditions in which a flow of therapeutic gas to a patient is required, yet not being provided.

Abstract: A firebreak device configured to arrest a flow of medical gas capable of combustion or of supporting combustion, said device comprising: a housing having a body portion, an inlet and an outlet, said inlet and outlet being linked by a conduit; a valve assembly located within said body portion, said valve assembly being movable between an open position, in which gas can flow between said inlet and outlet along said conduit, and a closed position in which gas flow between said inlet and said outlet is arrested; a biasing assembly (340) arranged within said body portion to move said valve assembly into said closed position; and a heat activatable stop (350) located between said biasing assembly and said outlet to hold said valve assembly in said open position against said biasing assembly, and adapted to release said valve assembly to allow said biasing assembly to move said valve assembly to said closed position at an activation temperature, to close flow of gas through the device if said heat activatable stop i

Abstract: Aspects and embodiments relate to a gas flow alarm apparatus and gas flow alarm method. The apparatus comprises: a device configurable to introduce back pressure into a flow of gas, a supply sensor configured to determine whether gas flow to the device is enabled; a pressure sensor configured to determine whether a flow of gas through the device has developed back pressure; and logic circuitry in communication with the supply sensor and the pressure sensor configured to determine whether gas flow to the device is enabled and whether a flow of gas through the device has developed back pressure and, if not, to activate an alarm condition. Aspects and embodiments can provide a system which operates to warn a user against various adverse conditions in which a flow of therapeutic gas to a patient is required, yet not being provided.

Abstract: A dispenser system including a source of chemical concentrate, a source of diluent, and a mix chamber in fluid communication with the source of chemical concentrate via a first line and with the source of diluent via a second line to mix chemical concentrate and diluent to form a dilution. The dispenser system also includes one or more metering devices disposed in one or both of the first line and the second line, a discharge fluidly coupled to the mix chamber to deliver the dilution to a downstream receptacle, and a control system in communication with the one or more metering devices. The control system is programmed to adjust a concentration of chemical concentrate in the dilution via control of the one or more metering devices based on an environmental factor affecting a physical environment to be cleaned using the dilution.

Abstract: A dispenser system including a source of chemical concentrate, a source of diluent, and a mix chamber in fluid communication with the source of chemical concentrate via a first line and with the source of diluent via a second line to mix chemical concentrate and diluent to form a dilution. The dispenser system also includes one or more metering devices disposed in one or both of the first line and the second line, a discharge fluidly coupled to the mix chamber to deliver the dilution to a downstream receptacle, and a control system in communication with the one or more metering devices. The control system is programmed to adjust a concentration of chemical concentrate in the dilution via control of the one or more metering devices based on an environmental factor affecting a physical environment to be cleaned using the dilution.

Abstract: A dispenser system including a source of chemical concentrate, a source of diluent, and a mix chamber in fluid communication with the source of chemical concentrate via a first line and with the source of diluent via a second line to mix chemical concentrate and diluent to form a dilution. The dispenser system also includes one or more metering devices disposed in one or both of the first line and the second line, a discharge fluidly coupled to the mix chamber to deliver the dilution to a downstream receptacle, and a control system in communication with the one or more metering devices. The control system is programmed to adjust a concentration of chemical concentrate in the dilution via control of the one or more metering devices based on an environmental factor affecting a physical environment to be cleaned using the dilution.

Abstract: A dispenser system including a source of chemical concentrate, a source of diluent, and a mix chamber in fluid communication with the source of chemical concentrate via a first line and with the source of diluent via a second line to mix chemical concentrate and diluent to form a dilution. The dispenser system also includes one or more metering devices disposed in one or both of the first line and the second line, a discharge fluidly coupled to the mix chamber to deliver the dilution to a downstream receptacle, and a control system in communication with the one or more metering devices. The control system is programmed to adjust a concentration of chemical concentrate in the dilution via control of the one or more metering devices based on an environmental factor affecting a physical environment to be cleaned using the dilution.