BAIJIAN - Third party testing organization
This standard specifies the terminology、 classification、 technical requirements、 testing methods、 inspection rules、 and identification of workplace gas detection and alarm devices (hereinafter referred to as "detection and alarm devices"). This standard is applicable to the production and use of combustible gas、 toxic gas、 and oxygen detection and alarm devices in workplaces within the People's Republic of China. Detection and alarm devices used in other special places shall also comply with this standard、 unless otherwise specified by relevant standards. 2 Normative References: The clauses in the following documents become the clauses of this standard through the reference surface of the water standard. For dated reference documents、 all subsequent modifications (excluding corrected content) or revisions are not applicable to this standard. However、 parties to agreements based on this standard are encouraged to study whether new versions of these documents can be used. For undated references、 the latest version of * applies to this standard. GB/T 2421 Environmental Testing for Electrical and Electronic Products - Part 1: General GB 3836.1 Electrical Equipment for Explosive Gas Atmospheres - Part 1; General Requirements GB 3836.2 Electrical Equipment for Explosive Gas Atmospheres Part?: Flameproof Type d "" GB 3836.4 Electrical Equipment for Explosive Gas Atmospheres Part 4: Intrinsically Safe "" GB/T 4798.10 Introduction to Environmental Conditions for Electrical and Electronic Products GB/T4857.5 Packaging、 Transportation、 Packaging、 Drop Test Method GB153222003 (All Parts) Combustible Gas Detectors GBZ2-2002 Occupational Exposure Limits for Hazardous Factors in the Workplace. The following terms and definitions apply to this standard. 3.1 Sensor SCnsor is a component that converts the concentration of sample gas into a measurement signal. 3.2 Detector detection parts are components composed of a sampling device、 sensor、 and preamplifier circuit. 3.3 Indicator parts are components that indicate the measurement results of gas concentration. 3.4 Alarm parts: The components that emit alarm signals when the gas concentration reaches or exceeds the alarm set value、 commonly including buzzers and indicator lights. The gas alarm instrument should consist of two parts: a detector and an alarm
Baijian is committed to providing convenient and efficient testing services for enterprises and individuals、 simplifying testing processes、 improving the efficiency of testing services、 using Internet plus testing e-commerce to provide customers with diversified choices、 fundamentally reducing testing costs、 improving time efficiency、 breaking industry limitations and bottlenecks、 and creating an innovative testing platform in the industry. If you need it、 please contact 18501763637
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 problemsinspection 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