IEC 62419 pdf – Control technology – Rules for the designation of measuring instruments
1 scope and object
This International Standard is applicable to measurement technology. lt defines rules for theunambiguous designation of different types of measuring instruments and of measuringinstrument features with the intention of enabling unambiguous technical communication overlanguage boundaries.
The scope of this International Standard is
– the adaptation of the designation of measuring instruments and of measuring instrument
features to the state of science by designating them according to the measuring quantityor the measuring task instead of the unit,and
the adaptation of the designation of measuring instruments and of measuring instrumentfeatures to the terms given in the lSO/IEC Guide 99 (VIM).
lt is strongly recommended that……. measuring instrument”is used as secondarycomponent in compound terms. This is consistent with the objective of standardization,namely uniformity,especially since the meaning of other secondary components， e.9.”indicator”, “gauge”, “meter”, is no more descriptive than that of the standard component inthis context. For exceptions see 4.1 and A.2.
The ambiguous secondary component “… sensor”shall not be used. In its place one of thesecondary components “… sensing element”， ” … detector”.”… transformer” “… transducer”;,”… transmitter”, ” … measuring instrument”or “… measuring chain” shall be used, dependingon the task of the functional unit being termed.The definitions for detector (detecting device),transformer,transducer and transmitter are given in IEC 60050-351.
The following referenced documents are indispensable for the application of this document.For dated references, only the edition cited applies.For undated references, the latest editionof the referenced document (including any amendments) applies.
IEC 60050-311，International Electrotechnical Vocabulary – Part 311:General terms relatingto measurements
IEC 60050-312, International Electrotechnical Vocabulary – Part 312: General terms relatingto electrical measurements
lEC 60050-351:2006,International Electrotechnical Vocabulary – Part 351: ControlTechnology
ISO/IEC Guide 99: 2007, International vocabulary of metrology – Basic and general conceptsand associated terms (VIM)
ISo 31 series,Quantities and units
ISO 1000,Sl units and recommendations for the use of their multiples and of certain otherunits
3Terms and definitions
For the purposes of this document, the following terms and definitions apply.
device intended to be used to make measurements,alone or in conjunction withsupplementary devices
[ISOIEC Guide 99,3.1]
NOTE 1 Material measures are also measuring instruments.
NOTE 2 An instrument is also a measuring instrument if its output is transmitted, converted,processed or storedand cannot be perceived directly by the observer.
NOTE 3 The designation measuring instrument without any supplementary designation components should onlybe used as a generic term referring to all types of measuring instruments. In compound expressions, the ferm”measuring instrument” should only be used to signify a displaying measuring instrument.
EXAMPLE The Measuring Instruments and Measuring Systems catalogue (also contains，for example，signalgenerators and measuring assemblies).
displaying measuring instrumentdisplaying instrument
measuring instrument where the output signal is presented in visual form[ISOIEC Guide 99,3.4 modified]
NOTE 1 Several parameters may be required to output the measured value,e.g. power and energy when referringto the supply of electrical energy-
NOTE 2 The output measured value can refer directly to the measured quantity, or it can be derived from thisusing a processing method. The processing method can be invariable, manually adjustable or programmable.
NOTE 3 Linguistic usage is not unambiguous. In IEC 60050-311 displaying measuring instruments are alsotermed “indicating (measuring) instruments “. In ISO/IEC Guide 99, displaying measuring instrument and indicatingmeasuring instrument are not synonyms.
measuring instrument with signal output
measuring instrument providing an image of the measured quantity by an output signal
NOTE 1 Several parameters may be required to output the measured value, e.g.power and energy when referringto the supply of electrical energy-
NOTE 2 The output measured value can refer directly to the measured quantity,or it can be derived from thisusing a processing method.The processing method can be invariable,manually adjustable or programmable.
measuring instrument reproducing or supplying，in a permanent manner during its use,quantities of one or more given kinds, each with an assigned quantity value
[iso/IEC Guide 99,3.6]
EXAMPLES Standard weight, volume measure, standard electric resistor, standard signal generator.NOTE A material measure can be a measurement standard.