1 Scope
This standard specifies the technical requirements, test methods, and inspection rules for piezoelectric ceramic buzzers (hereinafter referred to as buzzers). This standard is applicable to piezoelectric ceramic buzzers used in alarm series and pronunciation body series
2 Referenced Standards
The following standards contain provisions that, through reference in this standard, constitute provisions of this standard.
. At the time of publication of this standard, all versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standardsGB191-90
Packaging, storage and transportation graphical symbols
GB 2414-81
Piezoelectric ceramic materials - Performance testing methods - Meridional stretching vibration Horizontal length stretching vibration of long strips
GB 2421-89
General rules for basic environmental testing procedures for electrical and electronic products
GB 2423.1-89 Basic environmental testing procedures for electrical and electronic products Test A: Low temperature test method GB 2423.2-89 Basic environmental testing procedures for electrical and electronic products Test B: High temperature test method GB
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