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GB/T 28850-2012: Thermostatic baths and circulators -- Heated liquid baths
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GB/T 28850-2012	English	419	Add to Cart	3 days [Need to translate]	Thermostatic baths and circulators -- Heated liquid baths

GB/T 28850-2012: Thermostatic baths and circulators -- Heated liquid baths

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Thermostatic baths and circulators. Heated liquid baths ICS 19.040 N61 National Standards of People's Republic of China Thermostatic bath and circulating means Hot bath Issued on. 2012-11-05 2013-02-15 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ 1 Scope 1 2 Normative references 1 3 Category 1 4 Conditions 2 Environmental Conditions 2 4.1 4.2 Supply Condition 2 2 4.3 liquid heat transfer medium 5 Requirement 2 5.1 appearance and structure 2 5.2 Technical Performance 2 5.3 Safety and environmental protection 3 6 Test Method 4 6.1 Main test instruments and equipment 4 6.2 Test conditions 4 6.3 Test appearance and structure 6 6.4 Operating temperature range Test 6 6.5 Minimum extended operating temperature Test 6 6.6 Temperature fluctuation test 6 6.7 Temperature Uniformity Test 7 6.8 Heating time Test 8 Safety and environmental protection test 8 6.9 7 Inspection rules 9 7.1 Inspection classification 9 7.2 Test item 9 7.3 factory inspection 10 10 7.4 Inspection stereotypes 7.5 Periodic Inspection 10 8 Marking 11 11 8.1 General Requirements 8.2 Classification mark 12 8.3 Product nameplate 12 8.4 Operations with 12 flags 12 8.5 Safety Signs 8.6 Package Marking 12 9 packaging, transportation and storage 12 9.1 Packaging 12 9.2 Transport 13 9.3 Storage 13 10 accompanying documents 13 10.1 Technical Paper 13 10.2 Other documents 13

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by China Machinery Industry Federation. The standard by the China Machinery Industry Federation. Drafting of this standard. Hangzhou snow carbon thermostat Technology Co., Ltd. Chongqing four of test equipment, machinery and industrial equipment Instrumentation Technology and Economy Institute, Zhejiang Institute of Metrology, Southern Jiangsu Wuxi Test Equipment Co., Ltd., Hunan measurement Detection Homes, and the Ministry of Information Industry Institute of Electronics V, on 海爱斯佩克 Environmental Equipment Co., Ltd. Participated in the drafting of this standard. Shenyang Academy of Instrumentation Science, Anhui Institute of Metrology, Hengyang Heng Instrument Electric Co., Ltd., China Electric Apparatus Research Institute, Ningbo Dongfang Heating Equipment Co., Ltd., Shanghai Jing Hong Experimental Equipment Co., Ltd., Chongqing Yinhe Experimental Instrument Co., the company. The main drafters of this standard. Xu Yueming, Chen Yunsheng, Jinli Hui, Zhou Lianqin, Ni Yiming, Xiong Zhiming, Zousu Yang, Feng Hua, Xu Qiuling, He Gang Jian, Liu Xiangheng, Zhouxiu Yuan, Wang Xiaofeng, Li Yaqin, Lim Chun Wing, Wang Jialong, only Shen Zhong, Jinmei Feng, Wang Huabin. Thermostatic bath and circulating means Hot bath

1 Scope

This standard specifies the classification of the bath temperature, conditions, requirements, test methods, inspection rules, marking, packaging, transportation, storage and with Line in the file. This standard applies not equipped with active cooling means to provide liquid heat transfer medium in the form of a constant temperature bath temperature environment (hereinafter referred to as high Temperature tank).

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 191-2008 Packaging - Pictorial signs GB/T 2829-2002 periodic inspection Sampling procedures and tables (suitable for process stability test) GB 4793.1-2007 measurement, control and laboratory safety requirements for electrical equipment - Part 1. General requirements GB 4793.6-2008 measurement, control and laboratory safety requirements for electrical equipment - Part 6. Laboratory material heating apparatus Particular requirements for equipment GB/T 9969-2008 General Industrial Product Manual GB/T 16895.10-2010 low-voltage electrical installations Part 4-44. Protection for safety voltage electromagnetic harassment and harassment protection GB/T 17248.3-1999 Acoustics machinery and equipment noise emission and other operating position emission sound pressure levels specified location Measuring method in situ Determination of JB/T 9512-1999 climate chamber test equipment and sound power levels Category 3 Non-combustible liquids or combustible liquids can be used as a high temperature liquid heat transfer medium tank. Category Name hot bath, requirements and signs are shown in Table 1. Table 1 Category Name e liquid heat transfer medium request flag Ⅰ a non-flammable liquid over-temperature protection c NFL Combustible liquid b Adjustable temperature over-temperature protection d Adjustable temperature over-temperature protection and an additional level of protection d FL a usually water and the other in a single fault condition and the predetermined temperature range nonflammable liquid. B liquid heat transfer medium flash point of not less than 65 ℃, Ⅱ class requirements apply, such as silicone oil. Otherwise Ⅲ class requirements apply, such as ethanol. c independent, non-self-resetting, and can cut off all poles of the heater or level overtemperature protection device. d can be adjusted over a moderate level of protection, it should only be carried out by means of tools. e manufacturers the option of using or not using. ...