3/18/2023 0 Comments Idive ipad housings![]() Used as a pressure relief valve, the Model #132s limit and vent the CO2 or air pressure to 0.15 psi during an ascent. The iDive is unusable, but protected prior to this transition. The iDive developers use a manual “pressure up” button to transition the internal housing pressure from negative to a precise positive pressure, which is set by the Model #132 at about 0.15 psi. Like all of Smart Products valves, they are available in very low and repeatable opening pressures. With their ability to function at a precise psi, this device incorporates two Model #132s. Any time the user wishes to use the device, the internal pressure must be increased slightly to a very small - and specific - positive pressure. The system's pressure is negative, and the membrane maintains contact with the touch screen. During a descent, the device is not usable, but the balance module continually balances pressures. This differential pressure is maintained in a negative range of a few psi, and it keeps the device safe. This action protects the device from crushing during a descent by limiting the differential pressure between the ambient and internal pressure. Therefore, more CO2 or air is used to pressure balance the interior of the system against the ambient water pressure. The deeper the iDive system goes, the higher the ambient water pressure. A unique pressure balancing mechanism, called the balance module, passively uses the input (from the CO2 or air) in direct proportion to the ambient water pressure. How the iDive Works: The iDive functions with either liquid CO2 cartridges (~800 psi gaseous CO2) or with first stage regulator air pressure (~100 psi) as the input. Additionally, the housing includes a pressure management system to allow the critical function of bleeding air during ascents. As an important design component, the membrane and touch screen must have a physical gap of air between them to allow finger contact to be recognized underwater. Next, and more challenging, developers had to create a flexible membrane/pressure balancing system to allow users to interface with the touch screen. The Challenge: To successfully use a touch screen device underwater, iDive developers had to 1) keep the device dry and 2) ensure users could interface with it at various water depths.ĭesign Solutions: The first requirement was met with a waterproof housing designed to safely operate in extreme pressures. This application is one way innovative companies are bringing marine science into the 21st century. ![]() This product, developed in collaboration between Watershot and Inova Design, Inc., uses Smart Products' Model #132 Side Seal as pressure relief valves within the system's balance module.
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