Tank level indicators are a type of level switch that is specifically utilized within tanks, which are large vessels used to hold gases, liquids or free-flowing solids. Usually metallic, tanks can be a fairly broad category including 30 gallon and 55 gallon drums as well as most other types of large containers such as hoppers or bins.
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SOR Inc.Lenexa, KS 800-676-6794, 913-956-3078 SOR® manufactures a full line of pressure, differential pressure, temperature, vacuum and level switches that are certified fit for use in SIL (Safety Integrity Level) environments. We are one of only a few manufacturers to offer its entire range of switches certified to the IEC 61508 standard. Our fundamentals include superior quality, excellent service and quick delivery.
Dwyer Instruments, Inc.Michigan City, IN 800-872-9141 Our ability to successfully diversify demonstrates Dwyer Instrument Inc.'s managed approach to the marketplace. This approach continues to maintain stability of the company, therefore providing a basis for positioning ourselves as a leader in providing knowledgeable, prompt and courteous customer service as well as stellar products like our tank level indicators.
AMETEK DrexelbrookHorsham, PA 800-553-9092 AMETEK, Inc. is a leading global manufacturer of electronic instruments and electromechanical devices, including specific instruments like tank level indicators. The Company has over 11,000 colleagues working at more than 80 manufacturing facilities and more than 80 sales and service centers in the United States and around the world. We are prepared to find your perfect measurement solution.
Gems Sensors & ControlsPlainville, CT 800-378-1600 At Gems Sensors & Solutions we are dedicated to providing our customers with the best, which involves employing excellent research and development teams to simulate actual application environments and perform rigorous environmental testing. That is why we have so many products, such as our tank level indicators. We know how to provide the perfect solution for your needs!
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Tank level indicators are fairly versatile types of level switches and can be used in diverse applications and industries, including petroleum, for level control of oil and gas in refineries; industrial manufacturing, for measurement of the levels of various processing media; chemical processing, for preventative level control of potentially hazardous materials; marine, used in the measurement of marine vessel fluid levels; and residential, for a variety of level indicating applications. Tank level indicators can be used not only in above ground tanks, such as overhead tanks or grounded tanks, but they can also be used for level control in underground tanks as well. Due to the diversity of the capabilities of tank level indicators, additional industries that utilize them include defense contracting, commercial, private sector aircraft manufacturing, agriculture and wastewater treatment.
Tank level indicators function mainly to measure the level of various materials based on the principle of differential pressure. This means that the level indicator is able to determine the level of the material due to the difference between the two pressures (the pressure at the bottom of the tank compared to the atmospheric pressure) being equal to the height of the material when it is multiplied by the specific gravity of the material. As a result, as long as the gravity of the material (or the density) remains the same, then the tank level indicator will be able to accurately measure the level of the material. When level measurement is based upon this principle, it is also commonly referred to as hydrostatic tank gauging (HTG). Floating level indicators are often a popular form of tank level indicators, and continuous level floats are one of the most accurate ways of measurement control in tanks. A continuous level float functions by means a sensors (which can range anywhere from two to 25 ft in length) is inserted at the top of the tank through either a flanged, welded or screwed connection. The accuracy of level measurement using this type of device is approximately up to .02 in. and as a result is used in many applications requiring high precision in measurement.
