公开(公告)号：US5846833A

公开(公告)日：1998-12-08

申请号：US785722

申请日：1997-01-17

申请人： Warren R. Clough ,  Lowell E. Paige ,  John Attanasio ,  William A. Faris ,  H. Harvey Michels ,  David A. Condit

发明人： Warren R. Clough ,  Lowell E. Paige ,  John Attanasio ,  William A. Faris ,  H. Harvey Michels ,  David A. Condit

IPC分类号： G01N11/08 ,  G01N33/28 ,  G01N33/00

CPC分类号： G01N33/2835 ,  G01N11/08 ,  Y10T436/21

摘要： A method for testing a non-hydrocarbon refrigerant, such as CFC-12 or HFC-134a, in a closed system for hydrocarbons, HCFC-22 refrigerant and ammonia is provided wherein a sample of the non-hydrocarbon refrigerant is withdrawn from the closed system, the pressure of the sample is measured and a metered portion of the sample is passed through a test apparatus (20) including a testing tube (30), a testing tube holder (40) for supporting the testing tube (30) and outfitted with a vent (48) to the atmosphere, and a pressure gauge (70) for indicating the pressure of the sample withdrawn. A medium (38) for indicating the presence of hydrocarbons in the sample flow passing through the testing tube is deposited on a surface disposed in the testing tube. The presence of undesired HCFC-22 refrigerant in the CFC-12 or HFC-134a is indicated by a higher pressure reading on the pressure gauge (70). Finally, the presence of ammonia is sensed by its characteristic pungent odor as the refrigerant sample flow is vented to the atmosphere.

摘要翻译： 提供了一种用于在封闭系统中测试碳氢化合物，HCFC-22制冷剂和氨的非烃类制冷剂如CFC-12或HFC-134a的方法，其中非烃制冷剂的样品从封闭系统中取出 测量样品的压力，并将样品的计量部分通过包括试管（30）的试验装置（20），用于支撑试管（30）的试管支架（40），并配备有 向大气的排气口（48）和用于指示取出的样品的压力的压力计（70）。 用于指示通过试管的样品流中存在烃的介质（38）沉积在设置在试管中的表面上。 在CFC-12或HFC-134a中存在不需要的HCFC-22制冷剂，由压力表（70）上的较高压力读数表示。 最后，随着制冷剂样品流向大气排放，氨的存在被其特征性的刺激性气味所感测。