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2. Level sensor - Wikipedia

   en.wikipedia.org/wiki/Level_sensor

   Hydrostatic pressure level sensors are submersible or externally mounted pressure sensors suitable for measuring the level of corrosive liquids in deep tanks or water in reservoirs. Typically, fluid level is determined by the pressure at the bottom of the fluid containment (tank or reservoir); the pressure at the bottom, adjusted for the ...

3. Water metering - Wikipedia

   en.wikipedia.org/wiki/Water_metering

   Ultrasonic water meters use one or more ultrasonic transducer to send ultrasonic sound waves through the fluid to determine the velocity of the water. Since the cross-sectional area of the meter body is a fixed and known value, when the velocity of water is detected, the volume of water passing through the meter can be calculated with very high ...

4. Float switch - Wikipedia

   en.wikipedia.org/wiki/Float_switch

   A float switch is a type of level sensor, a device used to detect the level of liquid within a tank. The switch may be used to control a pump, as an indicator, an alarm, or to control other devices. One type of float switch uses a mercury switch inside a hinged float.

5. Ultrasonic transducer - Wikipedia

   en.wikipedia.org/wiki/Ultrasonic_transducer

   An ultrasonic transducer is affixed to a stainless steel pan which is filled with a solvent (frequently water or isopropanol). An electrical square wave feeds the transducer, creating sound in the solvent strong enough to cause cavitation. Ultrasonic technology has been used for multiple cleaning purposes.

6. Instrumentation in petrochemical industries - Wikipedia

   en.wikipedia.org/wiki/Instrumentation_in...

   Pressure in blanketed tanks is maintained by self actuating pressure control valves (PCVs). As liquid is withdrawn from the tank the pressure in the gas space falls. The blanket gas supply valve opens to maintain the pressure. As the tank fills with liquid the pressure rises and a vent gas valve open to vent gas to atmosphere or a vent system. [11]

7. Fort Worth church's human trafficking shelter approved ... - AOL

   www.aol.com/fort-worth-churchs-human-trafficking...

   It will be two stories tall with a split-level basement. According to state records, the building is expected to cost $13.2 million. New details on Luigi Mangione's time in prison, evidence probed.

8. Custody transfer - Wikipedia

   en.wikipedia.org/wiki/Custody_transfer

   Installation of ultrasonic meters is relatively straightforward, and maintenance requirements are low. In June 1998, The American Gas Association published a standard called AGA-9. This standard lays out the criteria for the use of ultrasonic flowmeters for Custody Transfer of Natural Gas .

9. Shocking before and after pictures show all-out obliteration ...

   www.aol.com/news/shocking-pictures-show...

   The LA wildfires across the state of California this week have taken the lives of 5 individuals and thousands displaced from their homes. These before and after pictures show the wildlife's ...