| Main Title |
Design and Development of a MicroThermocouple Sensor for Determining Temperature and Relative Humidity Patterns within an Airstream. |
| Author |
Eisner, A. D. ;
Martonen, T. B. ;
|
| CORP Author |
Northrop Services, Inc., Research Triangle Park, NC.;Health Effects Research Lab., Research Triangle Park, NC. |
| Publisher |
c1989 |
| Year Published |
1989 |
| Report Number |
EPA-68-02-4450; EPA/600/J-89/363; |
| Stock Number |
PB90-215963 |
| Additional Subjects |
Thermocouples ;
Humidity ;
Atmospheric temperature ;
Airstreams ;
Psychrometers ;
Formulas(Mathematics) ;
Reprints ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB90-215963 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
7p |
| Abstract |
The paper describes the production and calibration of a miniature psychrometer treated with a specially developed porous coating. The investigation was conducted to determine localized patterns of rapidly changing temperature and relative humidity in dynamic flowing gas environments (e.g., with particular attention to future applications to the human respiratory system). The technique involved the use of dry miniature thermocouples, and wetted miniature thermocouples coated with boron nitride, to act as a wicking material. A precision humidity generator was developed for calibrating the psychrometer. It was found that, in most cases, the measured and expected (theoretically predicted) relative humidity agreed to within 0.5% to 1.0% relative humidity. Procedures that would decrease this discrepancy even further were pinpointed, and advantages of using the miniature psychrometer were assessed. |
| Supplementary Notes |
Pub. in Jnl. of Biomechanical Engineering, v3 p283-287 Nov 89. Sponsored by Health Effects Research Lab., Research Triangle Park, NC. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Design and Development of a MicroThermocouple Sensor for Determining Temperature and Relative Humidity Patterns within an Airstream. |
| Category Codes |
55D |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/10 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
019410479 |
| Origin |
NTIS |
| Type |
CAT |
