| Patent No: | US5866075 [USA] | Application No: | 998654 |
| Title: | Device useful for sensing ammonia and nitrogen oxides(s) gases at room temperature | ||
| Issue Date: | 02-02-1999 | File Date: | 29-12-1997 |
| Inventor(s): | Gupta, Ram Pratap; Vyas, Purushottam Das; Gergintschew, Zenko; Schipanski, Dagmar | ||
| IPC Classification: | G01N 027/00 | ||
| Abstract: | A device for sensing ammonia (NH3) and nitrogen oxide (NOx) gases comprising: a sensor for detecting said ammonia and said nitrogen oxide gases, said sensor including a substrate and a layer consisting of cuprate material for detection of said ammonia and said nitrogen oxide gases, wherein said layer of cuprate material is selected from the group consisting of Y:Ba:Cu:O (YBCO) and Bi:Sr:Ca:Cu:O (BSCCO); a sensor holder for supporting said sensor; a perforated cap positioned over said sensor, said perforated cap having openings for passage of said ammonia and said nitrogen oxide gases to said sensor; a detection circuit communicating with said sensor for measuring output from said sensor; and a display or recording device connected to said detection circuit for displaying or recording a concentration of said ammonia and said nitrogen oxide gases based on the output from said sensor. | ||