发明名称 |
Diffusion-type NDIR gas analyzer with improved response time due to convection flow |
摘要 |
A diffusion-type NDIR gas analyzer with an improved response time due to convection flow created by a temperature gradient between gas located within a waveguide and gas located within a diffusion pocket of space created between the waveguide and a semi-permeable membrane which surrounds the waveguide. The temperature gradient may be created by a thermally resistive radiation source that is not thermally isolated from the waveguide. The semi-permeable membrane is made of a hydrophobic material and has a thickness sufficient to provide its own structural integrity. The semi-permeable membrane can have a porosity less than approximately 50 mum and be comprised of ultra high molecular weight polyethylene or TEFLON(R).
|
申请公布号 |
US6410918(B1) |
申请公布日期 |
2002.06.25 |
申请号 |
US20000613987 |
申请日期 |
2000.07.11 |
申请人 |
EDWARDS SYSTEMS TECHNOLOGY, INC. |
发明人 |
KOUZNETSOV ANDRIAN I. |
分类号 |
G01N21/31;G01N21/35;G01N21/61;(IPC1-7):G01N21/35 |
主分类号 |
G01N21/31 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|