multimeter

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Multimeter

An instrument designed to measure electrical quantities. A typical multimeter can measure alternating- and direct-current potential differences (voltages), current, and resistance, with several full-scale ranges provided for each quantity. Sometimes referred to as a volt-ohm meter (VOM), it is a logical development of the electrical meter, providing a general-purpose instrument. Many kinds of special-purpose multimeters are manufactured to meet the needs of such specialists as telephone engineers and automobile mechanics testing ignition circuits. See Ammeter, Current measurement, Ohmmeter, Resistance measurement, Voltage measurement, Voltmeter

Multimeters originated when all electrical measuring instruments used analog techniques. They were generally based on a moving-coil indicator, in which a pointer moves across a graduated scale. Accuracy was typically limited to about 2%, although models achieving 0.1% were available. Analog multimeters are still preferred for some applications. For most purposes, digital instruments are now used. In these, the measured value is presented as a row of numbers in a window. Inexpensive hand-held models perform at least as well as a good analog design. High-resolution multimeters have short-term errors as low as 0.1 part per million (ppm) and drift less than 5 ppm in one year. Many digital multimeters can be commanded by, and send their indications to, computers or control equipment.

multimeter

[′məl·tə‚mēd·ər or məl′tim·əd·ər]
(engineering)

multimeter

An instrument for measuring electricity (volts, amps, ohms) that is widely used and available in numerous shapes and sizes. An analog multimeter displays results by moving a pointer across a printed scale. The movement of the pointer helps to show gradual changes, but is less precise than its digital counterpart. A digital multimeter (DMM) displays the exact measurement on a numeric LCD or LED readout.
References in periodicals archive ?
With the included connector cable, Smart LED Test Tweezers can be used as tweezer probes with most multimeters.
According to the report, the increased use of sensors and other advanced technologies worldwide has increased the need for the use of test equipment, especially multimeters, during design and post manufacture to check the conformance and accuracy of products.
USPRwire, Wed Sep 02 2015] Fast Market Research announces the availability of Technavio's new report "Global Multimeter Market 2015-2019" on their comprehensive research portal.
The Model DMM7510 offers users a powerful combination of capabilities including higher measurement accuracy, a precision multimeter offers the flexibility to select resolution levels from 354 to 7V[pounds sterling] digits and DC accuracies typically only found in metrology-grade instrumentation--but at about half the price of those solutions.
The market for digital multimeters is more fragmented than other test instruments and features more competition between more brands.
Fluke multimeters that are out of calibration shall not be placed in the Tool Roll until they are checked by the calibration facility.
Fluke has introduced a new, easy-to-use true-RMS digital multimeter (DMM) designed to help utility electrical contractors and industrial electricians to quickly diagnose electrical problems.
The multimeters used in the NIST force laboratory demonstrate a linearity sufficient to enable a single meter calibration factor to be applied; the uncertainty associated with nonlinearity is about 0.
These test leads are used with the ubiquitous Fluke-77 multimeters.
These two compact PCI/PXI digital multimeters (DMMs) are designed for automated production testing, laboratory automation, portable/field testing, disk drive testing and resistor network testing applications.
Analog-type multimeters use a needle and printed scales to display results from a variety of electrical tests.
Traditionally, multimeters have not provided an easy method of exporting or saving data.