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Description of BS 5164:1975 19751.1 This British Standard specifies requirements for indirect-acting electrical instruments using a null balance method which need an auxiliary electrical power supply. These instruments may indicate the value of the measured quantity or record the value of the measured quantity as a function of time. Instruments may combine both these functions. 1.2 This standard also applies to electrically operated measuring equipments, provided that the electrically operated measuring instrument (receiver) only is considered and that the relationship between the non-electrical and the electrical quantity is known. 1.3 This standard does not apply to:
1.4 This standard does not contain requirements for protection against environmental conditions. 1.5 This standard does not specify requirements concerning dimensions of instruments or detailed requirements concerning terminal markings and diagrams of connection.
Defines and classifies instruments using a null balance method and needing an auxiliary electrical supply. Permissible intrinsic errors, reference conditions and variations for measured quantity and time-keeping for recording instruments. Also electrical, mechanical, constructional and marking requirements.
About BSIBSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses. |
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