This part of the scope GB/T 7676 specifies the terms and definitions, classification, grading, general technical requirements, information, markings and symbols, packaging and storage, and inspection rules for direct acting analog indicating electrical measuring instruments and their accessories. This section is applicable to electrical measurement indicating instruments that directly act on analog indications, such as ammeters and voltmeters-- Power meter and reactive power meter; - - Pointer type and vibrating spring type frequency meter; - - Phase meter, power factor meter, and synchronous indicator; - - Resistance meter (impedance meter) and conductivity meter; - - The above form of multifunctional instrument; This section also applies to certain accessories used in conjunction with the above instruments, such as diverters; Series resistors and impedors; Hall current sensor; Hall voltage sensor· Electronic converter--- The combination of instruments and accessories when used together and adjusted in a combined state The relationship between its graduation line and input power is known, but it does not directly correspond to a direct acting analog indicating electrical measuring instrument. Instruments and accessories with electronic devices in their measurement and/or auxiliary circuits
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China