Measuring Instrument

Also found in: Dictionary, Thesaurus, Wikipedia.

Measuring Instrument


a device that makes possible direct reading of values of a quantity being measured.

In analog instruments the readout is from a scale; in digital instruments, from a digital reading device. Indicating instruments are intended only for visual readings, whereas recording instruments are equipped with a device for recording the readings, mainly on paper. Recording instruments are subdivided into automatic types, which produce a record of readings in the form of a diagram, and printing types, which provide readings in digital form. In direct-action instruments (such as a manometer or ammeter), one or more conversions of the measured quantity are performed and its value is found without comparison with a known like quantity. In comparison instruments the quantity being measured is compared directly with a like quantity reproduced by a standard (examples are an equal-arm balance, an electric potentiometer, and a comparator for linear measures). Integrating instruments (electric or gas meters), in which the quantity is integrated in time or with respect to another independent variable, and summation instruments, which provide the value of two or more quantities fed through different channels (wattmeters, which total the power of several electrical generators), are among the varieties of measuring instruments.

To automate the control of industrial processes, measuring instruments are often equipped with additional recording, calculating, and control devices that function according to predetermined programs.


References in periodicals archive ?
ALMEMO 2590-A Professional Measuring Instruments also feature a “sleep” mode for long-term recording applications.
time and date instantaneously, the new temperature and humidity measuring instruments are vital for fast accurate measurement.
Among the five segments of the Analytical and Measuring Instruments segment (see graph above), Environmental Analyzers posted the fastest year over year growth, with sales up 24.
As part of Shimadzu's 2005-2008 Medium-Term Management Plan, the company aims to continue to expand the Analytical and Measuring Instrument division internationally, particularly in North America and China, as well as grow its already strong position in markets such as GC and environmental analyzers.
To prepare for the Measuring Instrument Directive which comes into force in October 30th 2036:
Calibration (VIM-1993)--set of operations that establish, under specified conditions, the relationship between values of quantities indicated by a measuring instrument or measuring system, or values represented by a material measure or a reference material, and the corresponding values realized by standards.
document confirming the introduction of this measuring instrument in the State Register of Measuring Instruments of the Republic of Belarus (certificate);
Calibration is the act of checking or adjusting the accuracy of a measuring instrument according to a known standard.
Contract Awarded for Refractive index coefficient of temperature measuring instrument purchase
Tenders are invited for Procurement Of Moisture Content Determining Instrument In Lube Oil, Tan Measuring Instrument Of Lube Oils And Tbn Measuring Instrument Of Lube Oils
The authors present each audit not solely as a measuring instrument, but also as a collective learning experience intended to help those who are responsible for finding ways to improve organizational performance.