A device that responds to absolute pressure as the input and provides a measurable output of a nature different than but proportional to absolute pressure.



Related Terms

AUTOMATIC LEVEL CONTROL

  1. A circuit that keeps the output of a radio transmitter or other device essentially constant, even in the presence of large changes in the input amplitude. Abbreviated ALC. 2. In an automotive vehicle, a system in which two air-chamber shock absorbers in the rear are fed compressed air by an electric compressor; pressure in the air chambers is determined automatically by sensors to maintain the vehicle at a predetermined height regardless of load.

COMMON-MODE VOLTAGE

A voltage that appears in common at both input terminals of a device with respect to the output reference (usually ground).

CLIPPER-LIMITER

A device whose output is a function of the instantaneous input amplitude for a range of values lying between two predetermined limits but is approximately constant, at another level, for input values above the range.

AMPLITUDE DISTORTION

Distortion occurring in an amplifier or other device when the output amplitude is not a linear function of the input amplitude.

ELECTROCHEMICAL TRANSDUCER

A device which uses a chemical change to measure the input parameter; the output is a varying electrical signal proportional to the measurand.

AMPLIFIER

A device which enables an input signal to control power from a source independent of the signal and thus be capable of delivering an output which is greater than the input signal.

DUMMY ANTENNA

A substantially non-radiating device used to simulate an antenna with respect to input impedance over some specified range of frequencies. Also called ARTIFICIAL ANTENNA.

COMPRESSION RATIO

The ratio of the absolute pressure at the discharge from a compressor divided by the absolute pressure at the suction. For internal combustion engines compression ration is absolute pressure at the end of compression stroke divided by absolute pressure at beginning of this stroke

AIR THERMOMETER

A device that measures the temperature of an enclosed space by means of variations in the pressure or volume of air contained in a bulb placed in the space.

SAFETY CONTROL

Device to stop unit, equipment or system if unsafe pressure and/or temperatures and/or dangerous conditions are reached.

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