公开(公告)号：US5012432A

公开(公告)日：1991-04-30

申请号：US365460

申请日：1989-06-13

申请人： Joseph R. Stetter ,  Melvin W. Findlay ,  Chongshan Yue

发明人： Joseph R. Stetter ,  Melvin W. Findlay ,  Chongshan Yue

IPC分类号： G01N25/30 ,  G01N25/36 ,  G01N33/22

CPC分类号： G01N25/36 ,  G01N25/30 ,  G01N33/225

摘要： The BTU content of a sample of natural gas is measured using a computer controlled microcalorimeter micro-sensor instrument employing a catalytic sensor. The instrument is portable for in field use and is able to obtain measurement accuracy of better than .+-.1%. A carrier gas, a standard reference gas and the sample gas to be measured are injected in a controlled manner through use of computer controlled solenoid valves and flow control valves, and a measurement loop injects precise gas volumes to enable a highly accurate BTU measurement by the catalytic sensor.

摘要翻译： 使用采用催化传感器的计算机控制的微量热计微量计仪器测量天然气样品的BTU含量。 该仪器便于现场使用，能够获得比+/- 1％更好的测量精度。 通过使用计算机控制的电磁阀和流量控制阀，以受控的方式注入载气，标准参比气体和待测样品，测量回路注入精确的气体体积，以实现高精度的BTU测量 催化传感器。