GB/T 26809-2011Thermostatic baths and circulators - Refrigerated circulators (English PDF)

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules.

1 Scope

This standard specifies the classification cryostat cycle apparatus, conditions, requirements, test methods, inspection rules, marking, packaging, transportation, storage Deposit and accompanying documents.

This standard applies to devices equipped with active cooling, in the form of liquid heat transfer medium to provide constant temperature cryostat cycle apparatus (hereinafter Acronym temperature cycling device).

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 16895.12-2001 Electrical installations of buildings Part 4: Protection for safety Chapter 44. Over Voltage Protection Section 443. Atmospheric over-voltage or over-voltage protection operation

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

JB/T 9512-1999 Determination of climate chamber test equipment and sound power levels

3 Category

Non-combustible liquids or combustible liquids can be used as low-temperature liquid heat transfer medium circulation device, temperature cycling device category names, requirements and standard Chi Table 1.

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 °C, 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.