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nfmin8459½ð³æ (СÓÐÃûÆø)
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Unless otherwise specified, provisions shall be made for flushing the sample conditioning system and analyzer with nitrogen or instrument air prior to disassembly for maintenance. Systems containing hydrocarbons must use nitrogen. The flushing connection shall be immediately upstream of the fast loop filter. The primary connection to the sample line shall be a three way valve with a second double block and vent three way valve to isolate the nitrogen/instrument air. If process pressure is higher than utility pressure, a check valve and removable flexible hose connection shall be provided. The chromatograph analyzer and its controller shall be either wall or rack mounted in the analyzer shelter. The analyzer controller and all associated electrical systems shall be installed in enclosures suitable for the electrical area classification specified on the Instrument Data Sheets. The preferred method is a purged enclosure in accordance with NFPA 496. |
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½ð³æ (СÓÐÃûÆø)
- ·ÒëEPI: 27
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 1236.3
- ºì»¨: 1
- Ìû×Ó: 165
- ÔÚÏß: 105.2Сʱ
- ³æºÅ: 1461053
- ×¢²á: 2011-10-26
- ÐÔ±ð: GG
- רҵ: »·¾³¹¤³Ì
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nfmin8459(½ð±Ò+50, ·ÒëEPI+1): 2011-11-12 18:24:56
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