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A water detector is an electronic device that is designed to detect the presence of water for purposes such as to provide an alert in time to allow the prevention of water leakage. A common design is a small cable or device that lies flat on a floor and relies on the electrical conductivity of water to decrease the resistance across two contacts.
Firstly, the surveyor can use an air filled metal bar lowered below the transducer, attached at each end by a rope marked with depth values. If the values on the rope can be assumed to be correct, then the bar is lowered at set depth intervals and observed on the echo sounder trace. The values of echo sounder depth can be plotted against the ...
A rosette sampler is made of an assembly of 12 to 36 sampling bottles. [1] Each bottle is a volume that range from a minimum value of 1.2 L to a maximum value of 30 L. [1] The bottles are clustered around a cylinder situated in the center of the assembly, [1] where there is a sensing system called Sea-Bird or CTD, that stands for "Conductivity, Temperature and Depth", although other variables ...
A float switch is a type of level sensor, a device used to detect the level of liquid within a tank. The switch may be used to control a pump, as an indicator, an alarm, or to control other devices. One type of float switch uses a mercury switch inside a hinged float.
A hands-free faucet in Japan. An automatic faucet or tap (also hands-free faucet, touchless faucet, electronic faucet, motion-sensing faucet, sensor faucet, or infrared faucet) is a faucet equipped with a proximity sensor and mechanism that opens its valve to allow water to flow in response to the presence of a user's hands in close proximity.
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Swift water rescue (also called "white water rescue") is a subset of technical rescue dealing in white water river conditions. Due to the added pressure of moving water, swift water rescue involves the use of specially trained personnel, ropes and mechanical advantage systems that are often much more robust than those used in standard rope rescue.
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