drift indicator的意思|示意

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Drift indicators, also known as depth indicators, are instruments used by scuba divers to measure their depth while underwater. They are typically mounted in a pressure-resistant housing and come with electrical or mechanical components that display the depth reading on a dial or digital display.

Drift indicators allow scuba divers to accurately measure their depth and can be used to set dive limits as well as helping to control buoyancy and descent rate. The information provided by a drift indicator also helps divers to avoid dangerous ascents and descents, which can result in decompression sickness or nitrogen narcosis.

Drift indicators will typically have a minimum and maximum depth, and they can be used in both shallow and deep waters. The minimum depth for a drift indicator is usually set at around 2 metres, while the maximum depth is usually set at around 40 metres.

The use of drift indicators is essential for safely diving deeper depths, as the pressure increases with depth and can cause serious injuries or even death if the diver does not remain conscious of their depth.

Drift indicators are available in both analog and digital types and can either be purchased or rented from dive shops. They usually require regular calibration to ensure accurate readings and should be checked for signs of corrosion or mechanical damage before each dive.