| Main Title |
Tests of the Recalibration Period of a Drifting Instrument. |
| Author |
Liggett, W. ;
|
| CORP Author |
National Bureau of Standards (NEL), Gaithersburg, MD. Statistical Engineering Div.;Environmental Monitoring Systems Lab., Research Triangle Park, NC. |
| Publisher |
1986 |
| Year Published |
1986 |
| Stock Number |
PB89-176275 |
| Additional Subjects |
Continuous sampling ;
Samplers ;
Calibrating ;
Statistical analysis ;
Drift(Instrumentation) ;
Sulfur dioxide ;
Performance evaluation ;
Quality assurance ;
Reliability ;
Air pollution detection ;
Air pollution sampling
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB89-176275 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
6p |
| Abstract |
The use of a drifting instrument requires that an adequately short recalibration period be chosen. After several periods, the calibration data can be used to test the adequacy of the choice. The paper discusses statistical tests of the recalibration period and applies these tests to continuous analyzers for sulfur dioxide. The paper presents two tests, a test of the second differences of the calibration sequence for normality and a test of the upper part of the spectrum for flatness. The paper illustrates these tests with two sequences each consisting of about fifty recalibrations of a sulfur dioxide analyzer. Also, the power of the tests and some approximations made in their formulation are investigated by Monte Carlo experiments. |
| Supplementary Notes |
Sponsored by Environmental Monitoring Systems Lab., Research Triangle Park, NC. |
| Availability Notes |
Pub. in Proceedings of Oceans 86, Conference Record on National Monitoring Strategies, Washinton, DC., September 23-25, 1986, p923-928. |
| NTIS Title Notes |
Final rept.. |
| Category Codes |
99A; 68A |
| NTIS Prices |
Not available NTIS |
| Primary Description |
NBS-290 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
919522956 |
| Origin |
NTIS |
| Type |
CAT |
