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  2. Multimeter - Wikipedia

    en.wikipedia.org/wiki/Multimeter

    The meter comprised a moving coil meter, voltage and precision resistors, and switches and sockets to select the range. The first Avometer had a sensitivity of 60 Ω/V, three direct current ranges (12 mA, 1.2 A, and 12 A), three direct voltage ranges (12, 120, and 600 V or optionally 1,200 V), and a 10,000 Ω resistance range.

  3. Current meter - Wikipedia

    en.wikipedia.org/wiki/Current_meter

    A current meter is an oceanographic device for flow measurement by mechanical, tilt, acoustical or electrical means. Different reference frames

  4. Turndown ratio - Wikipedia

    en.wikipedia.org/wiki/Turndown_ratio

    A turbine meter has a turndown ratio of 10:1. Rotary positive displacement meters have a turndown ratio of between 10:1 and 80:1, depending on the manufacturer and the application. Diaphragm meters are considered to have a turndown ratio of 80:1. Multipath ultrasonic meters often have a stated turndown ratio of 50:1.

  5. Source measure unit - Wikipedia

    en.wikipedia.org/wiki/Source_measure_unit

    A SMU integrates a highly stable DC power source, as a constant current source or as a constant voltage source, and a high precision multimeter.. It typically has four terminals, two for source and measurement and two more for kelvin, or remote sense, connection.

  6. Maximum demand indicator - Wikipedia

    en.wikipedia.org/wiki/Maximum_demand_indicator

    Maximum Demand Indicator (MDI) is an instrument for measuring the maximum amount [clarification needed] of electrical energy required by a specific consumer during a given period of time. [1]

  7. Avometer - Wikipedia

    en.wikipedia.org/wiki/Avometer

    Despite continuing demand from customers, production was stopped in 2008, reportedly due to increasing problems with suppliers of mechanical parts. [16] The last meter to leave the factory was an AVOmeter Eight Mk 7 (Serial Number 6110-610/081208/5166) which was presented in February 2010 to the winner of a competition run by the Megger company.

  8. Utility meter - Wikipedia

    en.wikipedia.org/wiki/Utility_meter

    A utility meter is any of the following metering devices used on utility mains: Electricity meter , a device for measuring electricity usage Smart meter , an electrical meter that records consumption of electric energy and communicates information to the utility for monitoring and billing

  9. Optical power meter - Wikipedia

    en.wikipedia.org/wiki/Optical_power_meter

    An optical power meter (OPM) is a device used to measure the power in an optical signal. The term usually refers to a device for testing average power in fiber optic systems. Other general purpose light power measuring devices are usually called radiometers , photometers , laser power meters (can be photodiode sensors or thermopile laser ...