Standard release of low temperature constant temperature bath and low temperature constant temperature circulating device

Issue date:2022/03/08    Views：45    Classification：Common problem

   Gb/t26808-2011 constant temperature bath and constant temperature circulating device low temperature constant temperature bath and gb/t26809-2011 constant temperature bath and constant temperature circulating device low temperature constant temperature circulating device drafted under the auspices of the company, After nearly four years of solicitation and repeated discussion by all experts of the drafting working group of climate and environmental equipment standards of sac/tc526 National Technical Committee for standardization of laboratory instruments and equipment (cmif/tc16 Technical Committee for standardization of laboratory instruments and equipment of mechanical industry), it was approved and issued on July 29th, 2011 and implemented on December 1st, 2011.

   The standards related to thermostatic bath include gb11240-89 electric thermostatic water bath, gb11241-89 thermostatic bath, jb/t5377-91 technical conditions of thermostatic bath and jb/t5376-1991 technical conditions of low temperature thermostatic bath in the machinery industry. There are no standards and industry standards for the circulating device. Since the existing standards were approved and issued in the late 1980s and early 1990s, whether it is technical requirements, test methods, sampling and judgment rules, especially safety requirements, signs and documents, the standard level has been seriously divorced from the requirements of national economic development and foreign trade. The two standards approved and issued this time are put forward under this technical and economic background.

   The drafting of low-temperature constant temperature bath and low-temperature constant temperature circulating device refers to the mechanical industry standard jb/t5376-1991 "technical conditions of low-temperature constant temperature bath" It represents the applicable part of the international advanced German standard din12876 "laboratory thermostatic bath and circulating device" series, as well as the conventional safety requirements and test methods of GB4793.1 (iec61010-1) "safety of measurement, control and laboratory equipment, Part 1 General requirements" and gb4793.6 (iec61010-2-010) "safety of measurement, control and laboratory equipment, Part 6" special safety requirements of laboratory equipment for material heating ". In particular, combined with the complex and diverse characteristics of the technical performance and application range of low-temperature constant temperature bath and low-temperature constant temperature circulation device, only the characteristics are listed for all technical performance requirements, and the characteristic values are specified by the manufacturer according to the product characteristics, so as to achieve the purpose of standardization through test methods. While fully embodying the scientificity and progressiveness of the standard, we should fully consider the actual situation and development level of product design, development and manufacturing in China's manufacturing industry at this stage, so as to make it operable.

   The standard specifies the classification, service conditions, technical requirements, test methods, inspection rules, marks, packaging, transportation, storage and accompanying documents of low-temperature thermostatic bath and low-temperature thermostatic circulation device. The standard is applicable to low-temperature constant temperature bath and low-temperature constant temperature circulating device equipped with active refrigeration device and providing constant temperature environment in the form of liquid heat transfer medium.

   The technical level of the two standards has reached the international advanced level, and some technical requirements have reached or exceeded the din12876 series standards issued in 2001. The test method for China's national conditions is more operable. Therefore, the low-temperature constant temperature bath, low-temperature constant temperature circulating device and cooling water device produced according to these two standards should also comply with the German din12876 specification. At present, the low-temperature thermostatic bath and low-temperature thermostatic circulation device produced by our company are exported to Europe, America and Japan. In addition to meeting the gb/t26808, gb/t26809 and other standards, they also meet the safety requirements of iec61010-1 and iec61010-2-010 and other standards. The products are exported to Germany, the United States, Japan, the United Kingdom and other developed countries in batches.

   With the release and implementation of the above two standards, domestic manufacturers of low-temperature thermostatic bath and low-temperature thermostatic circulation device will modify their product design, technical requirements, test methods, safety specifications, signs and documents, sampling inspection rules and other documents according to the new standards, which will be a long and difficult process. In the past four years, snow carbon has taken the lead in completing product design changes, technical specifications and test methods. At present, the technical requirements and test methods of all products have met the new standards, marking that the products, technologies and standards of snow carbon in the field of low-temperature thermostatic bath, low-temperature thermostatic circulation device, including cooling water device, have been at the domestic level.