Pressure for Dancing Waters

Welcome to All Sensors “Put the Pressure on Us” blog. This blog brings out pressure sensor aspects in a variety of applications inspired by headlines, consumer and industry requirements, market research, government activities, and you.

Pressure for Dancing Waters

Dancing waters, waltzing waters or other terms for describing the combination of colors and the motion of water in a fountain with several spouts rely on changes in and controlling the pressure for a defined time at each point in a water grid.

The computer-controlled systems consist of water, holding tanks, pumps to create pressure, solenoid operated valves, lighting and quite a few cleaver design tricks. For one of world’s most famous fountains, the one at the Bellagio in Las Vegas, uses only white lights. The number of sprayers and the height more than make up for the lack of color, especially with the majestic hotel in the background.

The fountain has over 1,200 sprayers that include 16 super jets that launch water 460 feet in finales. Called shooters by Wet Design that constructed the system, four different types of shooters are identified:

      • Programmable oarsman make the water dance up to 77 feet
      • Minishooters reach 100 feet
      • Supershooters achieve 240 feet and
      • Extreme-shooters can propel water up to 460 feet

Design aspects of each type vary but the SuperShooter has a 12-ft high holding tank, 1 foot in diameter that contains about 765 gallons. When air stored at 200 psi in 60-gallon receivers is released into the tank, the water climbs up to 240 feet. In contrast, smaller shooters with smaller tanks only require a few psi of air pressure to send water 10 to 12 ft into the air.

A water display on board a cruise ship A water display at sea on a cruise ship provides an interesting variation to moving water.

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Sandblasting Pressure

Welcome to All Sensors “Put the Pressure on Us” blog. This blog brings out pressure sensor aspects in a variety of applications inspired by headlines, consumer and industry requirements, market research, government activities, and you.

Sandblasting Pressure

Removing paint, rust or an old finish from furniture and even polishing and finishing is less work with a sandblaster with the right abrasive and the right pressure. Small cabinet blasters often use pressures below 100 psi. In contrast, a heavy-duty sandblaster with a single-stage air compressor, air pressure over 120-150 psi is used to reduce the time involved. A pressure gauge is a common part of cabinet and portable sandblasters to obtain repeatable results.

Stark Tools 10 Gallon Air Sand Blaster

With a working pressure of 60 to 125 psi, this Stark Tools sandblaster has a 0 to 150 psi pressure gauge to obtain the desired operating pressure.
Image Courtesy of ToolPlanet.com

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Optimal Pressure for Clean Teeth

Welcome to All Sensors “Put the Pressure on Us” blog. This blog brings out pressure sensor aspects in a variety of applications inspired by headlines, consumer and industry requirements, market research, government activities, and you.

Optimal Pressure for Clean Teeth

While some electric toothbrushes use pulsating water jets or oral irrigators with water pressures between 10 to 100 psi, some ultrasonic technology toothbrushes now integrate a pressure sensor to avoid brushing too hard. With their built-in pressure sensors, Philips ProtectiveClean or DiamondClean Smart series of toothbrushes have at least three modes and three intensities.

If the user is brushing too hard, the toothbrush handle vibrates and makes a pulsing sound as a reminder to not exert as much pressure. Other toothbrush manufacturers, such as the Oral-B Genius Pro 8000, have also integrated pressure sensors into their toothbrushes. This indicates that users are receiving value and willing to pay more, sometimes a lot more, for these premium types of toothbrushes. With a pressure sensor, the user can optimize the cleaning process and avoid damage to gums and even teeth.

While manufacturers reveal no information about the pressures involved, a university study from the 1970s found that 19.53 gm/mm2 (191.5 kPa or 27.8 psi or 1437 mm Hg) ±6.48 gm/mm2 (63.55kPa or 9.22 psi or 477 mm Hg) typically resulted from using a hard bristle toothbrush with lower pressures for soft and powered toothbrushes.

Koninklijke Philips N.V.  Sonicare ProtectiveClean 6100

Figure courtesy of Koninklijke Philips N.V.

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Low Pressure for Consistency and Safety

Welcome to All Sensors “Put the Pressure on Us” blog. This blog brings out pressure sensor aspects in a variety of applications inspired by headlines, consumer and industry requirements, market research, government activities, and you.

Low Pressure for Consistency and Safety

A liquid propane (LP) powered portable heater can make an enclosed space tolerable and even comfortable when the outdoor temperatures are low. Many systems use pressures in the range of 10 to 20 psi. However, these pressures can reduce the unit’s BTU output as the temperature drops. In contrast, a low-pressure portable heater system such as Dyna-Glo’s Delux 60,000-BTU Portable Forced Air Propane Heater can consistently achieve maximum BTU outputs, even in extremely cold environments. Operating at only 0.5 psi, the unit is also safer. Since the operating pressure is determined by design and not measured during operation, it does not have a pressure sensor. However, in the design verification or quality control processes, a pressure sensor such as All Sensors SPM 401 Series media isolated sensor could be used by manufacturers that make low pressure heaters as well as those that make high pressure heaters.

Dyna-Glo's Delux 60,000-BTU Portable Forced Air Propane Heater

Image courtesy of GHP Group, Inc.

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Do you have a pressure sensing question? Let us know and we’ll address it in an upcoming blog.
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