Measuring Instrument

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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 ?
Potential internal or external interference in the power grid is identified by the new measuring devices at an early stage.
The whole measuring device was placed in a laboratory with no-one allowed to enter.
But since 2006, it has been a matter for each individual club committee to decide whether it wants to allow distance measuring devices for play on its course or in some of its competitions.
This standard provides a practical solution for the calibration of torque measuring devices without making the calibration too time-consuming to perform and consequently commercially unviable.
Because both the Slope Measuring Device and the Angle Finder are small and inexpensive, we have adopted both for our arsenal of measuring devices.
Inside the tank is an enclosed measuring device with holes that allow the fluid couplant to enter the chamber between the transducer and a reflecting surface.
As measuring devices became more and more precise, old notions about the universe began to crumble.
Chromaline has been working with Apprise to develop a line of measuring devices that are more technologically advanced and more affordably priced than competitive products.
Figure 2 shows the take-away conveyor, the shrinkage conveyor, the continuous weighing scales, the width measuring device and the profile measuring device, as well as the head end of the cooling line.
measuring devices for measuring traction and sheet position with feedback to the speed of belt drives and brakes;
The Contractor shall take the measuring device on or insert measuring device and leases it to the client, provides all the necessary measurements with all the (legal) tasks and provides measurement data to, the selected Contractor meets the requirements of expertise and quality as in this Aanbestedingsleidraad and PvE with attachments described.