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All meters have a burden voltage (caused by the combination of the shunt used and the meter's circuit design), and some (even expensive ones) have sufficiently high burden voltages that low current readings are seriously impaired. Meter specifications should include the burden voltage of the meter. Resistance in ohms.
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 ...
A microwave power meter is an instrument which measures the electrical power at microwave frequencies typically in the range 100 MHz to 40 GHz. Usually a microwave power meter will consist of a measuring head which contains the actual power sensing element, connected via a cable to the meter proper, which displays the power reading.
Fluke Corporation is an American manufacturer of industrial test, measurement, and diagnostic equipment, including electronic test equipment. It was started in 1948 by John Fluke while he was employed at General Electric .
Klein Tools got involved in motorsports in 1994 to gain visibility with auto racing fans. [11] Drivers of Klein-backed cars included Jacques Villeneuve, who won the Indianapolis 500 and the CART championship in 1995; and Dan Wheldon (co-major sponsor with Jim Beam) as well as being an associate sponsor for all of Andretti-Green Racing, who won the Indianapolis 500 in 2005.
Wattmeter measures the electrical power circulating in any electric circuit; Microwave power meter measures power in a microwave signal; Optical power meter measures power in an optical signal; Google PowerMeter is a tool to track a household's energy usage; A cycling power meter measures the power output of a bicycle rider; Health meter, a ...
For each sample, the voltage is multiplied by the current at the same instant; the average over at least one cycle is the real power. The real power divided by the apparent volt-amperes (VA) is the power factor. A computer circuit uses the sampled values to calculate RMS voltage, RMS current, VA, power (watts), power factor, and kilowatt-hours.
A peak programme meter (PPM) is an instrument used in professional audio that indicates the level of an audio signal. Different kinds of PPM fall into broad categories: True peak programme meter. This shows the peak level of the waveform no matter how brief its duration. Quasi peak programme meter (QPPM). This only shows the true level of the ...