This part of GB/T 22264 specifies the terms, categorization, classification and conformity of product, technical requirements, packaging, storage and transportation, information, conventional marks and symbols, marks and symbols at terminal and inspection rules of mounted digital display frequency meter.
This part is applicable to mounted digital display frequency meter, and also applicable to the digital display part of dual analogue-digital display frequency meter.
This part is not applicable to:
——frequency meters only provided with direct acting indicating analogue.
——portable digital display frequency meters.
——the instruments for special purpose specified in national standard (or professional standard).
2 Normative References
The following normative document contains provisions which, through reference in this text, constitute provisions of this part of GB/T 22264. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this part. However parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 22264.1-2008 Mounted Digital Display Electric Measuring Instruments Part 1: Definitions and General Requirements Common to All Parts
3 Terms and Definitions
For the purposes of this part, the terms and definitions given in GB/T 22264.1-2008 and the following apply.
3.1
frequency meter
instrument used for measuring one periodic quantity
[IEV313-01-12]
3.2
digital display frequency meter
digital display instrument used for measuring frequency
4 Categorization, Classification and Conformity of Product
4.1 Categorization
The frequency meters shall be categorized according to 4.1.4~4.1.7, GB/T 22264.1-2008
