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Submersible pressure gauge. A scuba regulator first stage has one or two high pressure ports upstream of all pressure-reducing valves to monitor the gas pressure remaining in the diving cylinder, provided that the valve is open. The standard connection is an O-ring sealed 7/16" UNF inside thread. [1] There are several types of pressure gauge.
Typical submersible pressure gauge Gas pressure in diving cylinders is measured in both United States customary units psi (pounds per square inch) and metric bar, where 1 bar equals 100 kPa, 0.1 MPa or about 14.5 psi. The face of this US-made cylinder pressure gauge is calibrated in pounds per square inch in red and kilopascals in black.
They include depth gauges for underwater diving and similar applications. A diving depth gauge is a pressure gauge that displays the equivalent depth below the free surface in water. The relationship between depth and pressure is linear and accurate enough for most practical purposes, and for many purposes, such as diving, it is actually the ...
The first stage regulator body generally has several low-pressure outlets (ports) for second-stage regulators, BCD inflators and other equipment; and one or more high-pressure outlets, which allow a submersible pressure gauge (SPG), gas-integrated diving computer or remote wireless pressure transducer to measure the cylinder pressure.
Submersible pressure gauge, also known as a "contents gauge" is used to monitor the remaining breathing gas supply in scuba cylinders. Dive computer helps the diver to avoid decompression sickness by indicating the decompression stops needed for the dive profile. Most dive computers also indicate depth, time and ascent rate.
Instrument to measure the depth of a diver, which measures the ambient pressure at the diver by measuring the pressure in a hose filled with air with an open end at the diver and with the surface end connected to a gas supply, control valve and pressure gauge calibrated in msw, fsw, or often both. [1] [15] pneumothorax. Main article: Pneumothorax
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