Test method: Dimensional inspection of outer diameter and thermocouple wire diameter., The measuring instrument should have a minimum graduation value of no less than 0 A 001mm micrometer or other equally accurate testing equipment. The measurement should be conducted in two mutually perpendicular directions on the same cutting surface, and at least three parts of each armored couple cable should be measured. The inspection of outer tube wall thickness and insulation layer thickness can be measured under a reading microscope or using the manufacturer's standard test methods. Surface quality inspection: Surface quality is observed visually The inspection method for thermoelectric characteristics adopts the comparison method (bipolar method), which directly measures the thermoelectric electromotive force of the standard plate and the armored thermoelectric device. Oil baths or low-temperature tanks are used as temperature sources in temperature zones of 300C or below. When a standard platinum resistance thermometer is used as the standard, its connection circuit is shown in Figure 3. A calibration furnace is used as the temperature source for temperatures above 300C, and its connection circuit is shown in Figure 4
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