Peak-reading — A peak reading electrical instrument or meter is one which measures the peak value of a waveform, rather than its mean value or RMS value. As an example, when making audio tape recordings it is desirable to use a recording level that is just… … Wikipedia
Peak flow meter — A peak flow meter is a small, hand held device used to manage asthma by monitoring airflow through the bronchi and thus the degree of obstruction in the airways. FunctionThe peak flow meter measures the patient s maximum ability to exhale, or… … Wikipedia
Quasi-peak — means not quite peak , or aiming towards peak but not actually peak . The term is commonly used when referring to electronic detectors or rectifiers. Despite the above definition, the term quasi peak should not be interpreted as vague in any way … Wikipedia
VU meter — A VU meter is often included in analog audio equipment to display a signal level in Volume Units.It is intentionally a slow measurement, averaging out peaks and troughs of short duration to reflect the perceived loudness of the material. It was… … Wikipedia
Electricity meter — Typical North American domestic analog electricity meter … Wikipedia
Sound level meter — Type 1 Sound Level Meter (Shown: Svantek 979) Sound level meters measure sound pressure level and are commonly used in noise pollution studies for the quantification of almost any noise, but especially for industrial, environmental and aircraft… … Wikipedia
Automatic meter reading — [ smart meter ( [http://www.elstermetering.com/en/1914.shtml Elster REX type R15] ) with 900MHz mesh network topology for AMR] Automatic meter reading, or AMR, is the technology of automatically collecting data from water meter or energy metering … Wikipedia
Microwave power meter — A microwave power meter is an instrument which measures the electrical power at microwave frequencies. Usually a microwave power meter will consist of a measuring head which contains the actual power sensing element, connected via a cable to the… … Wikipedia
Digital panel meter — Digital panel meters are used to display an input signal, and measure current, voltage, and frequency. They are equipped with bright LED displays for display only or set point control options. Many panel meters also include alarm options as well … Wikipedia
Smart meter — [ http://www.elstermetering.com/en/1914.shtml Elster REX] ) with 900MHz [ [http://www.elster eis.com/en/LAN.html EnergyAxis LAN 900MHz Frequency hopping spread spectrum (FHSS) radio] ] mesh network topology for automatic meter reading and… … Wikipedia
Optical power meter — in use 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… … Wikipedia