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UL 180

8th Edition, May 12, 2017

Complete Document

Standard for Liquid-Level Gauges for Oil Burner Fuels and Other Combustible Liquids

Includes all amendments and changes through Revision Page(s) , May 12, 2017


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Product Details:

  • Revision: 8th Edition, May 12, 2017
  • Published Date: May 12, 2017
  • Status: Active, Most Current
  • Document Language: English
  • Published By: UL (UL)
  • Page Count: 35
  • ANSI Approved: Yes
  • DoD Adopted: No

Description / Abstract:

These requirements cover the construction and performance requirements of mechanical and electrical liquid-level gauges for use on vented atmospheric tanks intended primarily for the storage and supply of heating fuel for oil burning equipment, or alternately for the storage of diesel fuels for compression ignition engines and motor oils (new or used) for automotive service stations, in aboveground applications not exceeding 3,000 gal (11,356 L).

These requirements cover liquid-level gauges of the following basic operating principal types intended for installation in storage tank top openings in accordance with the manufacturer’s instructions:

a) Mechanical float type gauges;

b) Magnetic float type gauges;

c) Reflective wave (sound or light) type gauges;

d) Pressure actuated (static and dynamic) type gauges; and

e) Electrical probe (variable resistance) type gauges

Each gauge type has either a mechanical or electrical level indicator, and may additionally have sound or light signal features, or remote communication features. The indicator and/or signal may be directly attached to, or remote from, the tank liquid level measuring part of the gauge.

These requirements do not cover any monitoring, measuring, metering or other control applications with flammable liquids, or in hazardous (classified) locations such as:

a) Electric liquid level gauges and associated equipment intended to monitor or control flow between storage tanks; or in or out of a storage tank;

b) Electric liquid-level gauges for use in industrial applications such as petroleum, chemical or petrochemical processing plants; bulk loading plants; utility power plants; or marine terminals;

c) Electronic remote reading or transmission gauges such as hydrostatic-balance and hydraulicpressure types; and

d) Portable electric liquid level gauges, measuring sticks or measuring tape.

These tanks are intended for installation and use in accordance with the Standard for the Installation of Oil-Burning Equipment, ANSI/NFPA 31, the Flammable and Combustible Liquids Code, ANSI/NFPA 30, the Code for Motor Fuel Dispensing Facilities and Repair Garages, ANSI/NFPA 30A, the Standard for Emergency and Standby Power Systems, NFPA 110, and the International Fire Code published by the International Code Council.

These requirements do not cover special evaluations for resistance to, or use after hurricanes, tornadoes, earthquakes, floods, fires or other natural disasters; or resistance to vehicle impact.

These requirements do not cover evaluation of either resistance to or emission of electromagnetic interference, or compliance with FCC regulations for gauges with local or remote signal features.

 These requirements do not cover evaluation of the effectiveness of optional wired or wireless signal communications to remote service providers or central station monitors.

These requirements do not cover use with waste oils or other combustible liquids with different physical or material compatibility properties with respect to the intended liquids in 1.1, but do cover 100 percent bio diesel and bio diesel blends up to 20 percent. These requirements do not cover use with flammable liquids.