Abstract: A sensor arrangement for measuring liquid level in a tank can include a housing, a transducer, a couplant and a bracket for holding one or more sensor components in sensing communication with the tank. The bracket can be configured to hold both a tank and one or more sensors, which can include coupling one or both to another structure, such as a vehicle that utilizes the tank as a fuel source.

Abstract: A system for monitoring a tank having an anode electrically coupled to the tank via an anode wire can include a controller, a user interface in electronic communication with the controller, and an anode sensor wire electrically coupled to the anode wire and coupled in communication with the controller. The controller can measure a current flowing through the anode wire, predict when the anode will no longer provide sufficient galvanic protection to the tank, and provide an indication of when the anode will no longer provide sufficient galvanic protection to the tank, such as via the user interface.

Abstract: A system for monitoring an underground propane tank, comprising a controller; a moisture sensor coupled in communication with the controller, wherein the controller is configured to measure a moisture associated with the tank; a voltage probe coupled in communication with the controller, wherein voltage probe is adapted to be disposed at least partially underground, and wherein the controller is configured to measure a potential difference between the tank and soil surrounding the tank, when the moisture associated with the tank is measured to be above a predetermined threshold; and an anode sensor coupled to an anode of the tank and coupled in communication with the controller, wherein the controller is configured to monitor the anode using the anode sensor.

Abstract: A sensor arrangement for measuring liquid height in a tank can include a housing, a transducer, and a couplant. The housing can have an interior and an aperture, the aperture placing the interior of the housing in communication with the environment external to the housing. The transducer can be seated within the aperture. The couplant can be mechanically connected to the transducer and can have a compressible couplant body. The couplant body can extend between the transducer and the external environment for transmitting an acoustic pulse from the transducer to a tank bottom for measuring height of a liquid overlaying the transducer.

Abstract: A sensor arrangement for measuring liquid height in a tank can include a housing, a transducer, and a couplant. The housing can have an interior and an aperture, the aperture placing the interior of the housing in communication with the environment external to the housing. The transducer can be seated within the aperture. The couplant can be mechanically connected to the transducer and can have a compressible couplant body. The couplant body can extend between the transducer and the external environment for transmitting an acoustic pulse from the transducer to a tank bottom for measuring height of a liquid overlaying the transducer.

Abstract: A sensor arrangement for measuring liquid height in a tank can include a housing, a transducer, and a couplant. The housing can have an interior and an aperture, the aperture placing the interior of the housing in communication with the environment external to the housing. The transducer can be seated within the aperture. The couplant can be mechanically connected to the transducer and can have a compressible couplant body. The couplant body can extend between the transducer and the external environment for transmitting an acoustic pulse from the transducer to a tank bottom for measuring height of a liquid overlaying the transducer.

Abstract: A sensor arrangement for measuring liquid height in a tank can include a housing, a transducer, and a couplant. The housing can have an interior and an aperture, the aperture placing the interior of the housing in communication with the environment external to the housing. The transducer can be seated within the aperture. The couplant can be mechanically connected to the transducer and can have a compressible couplant body. The couplant body can extend between the transducer and the external environment for transmitting an acoustic pulse from the transducer to a tank bottom for measuring height of a liquid overlaying the transducer.

Abstract: A sensor arrangement for measuring liquid height in a tank can include a housing, a transducer, and a couplant. The housing can have an interior and an aperture, the aperture placing the interior of the housing in communication with the environment external to the housing. The transducer can be seated within the aperture. The couplant can be mechanically connected to the transducer and can have a compressible couplant body. The couplant body can extend between the transducer and the external environment for transmitting an acoustic pulse from the transducer to a tank bottom for measuring height of a liquid overlaying the transducer.

Abstract: A fire safety fluid flow device for engagement with a Schrader valve including a sliding valve a housing having a fluid path therethrough and a pressing member. The pressing member presses against the sliding valve of the Schrader valve when engaged therewith to allow fluid flow through the Schrader valve. The pressing member continues to maintain the sliding valve in an open position when the device is below a predetermined temperature and connected to the Schrader valve. The pressing member is configured to no longer press against the sliding valve of the Schrader valve at and above the predetermined temperature to allow the sliding valve of the Schrader valve to thereby stop fluid flow through the Schrader valve.