As many business operations were idled during the pandemic, it may be an especially important time to inspect a boiler’s external piping that feeds the water level indicators and low-water devices.

This water-level indicator uses a 7-segment display, instead of LEDs, to indicate the water level (low, half and full) in the tank. Moreover, a buzzer is used to alert you of water overflowing from ...

The Water Level Indicator includes a simple mechanism which helps to detect and indicate the water level in an overhead tank or any other water container.The sensing is done by using a set of nine ...

The coffee maker which [Donald Papp] uses every morning has a water reservoir on the back that can last for several days. This means he forgets to check it and from time to time will return to find ...

Large multinational food companies are currently looking at indicators farmers could use to show progress in saving water. Peter Erik Ywema, from the Sustainable Agriculture Initiative, an industry ...

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Often, the only liquid level indicator you need is your eyes, such as when looking at your cold beverage on a summer’s day. Other times, though, it’s useful to have some kind of indicator light that ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...