Details
| Original language | English |
|---|---|
| Article number | 015105 |
| Journal | Review of Scientific Instruments |
| Volume | 88 |
| Issue number | 1 |
| Publication status | Published - 12 Jan 2017 |
Abstract
Spectrophotometers are operated in numerous fields of science and industry for a variety of applications. In order to provide confidence for the measured data, analyzing the associated uncertainty is valuable. However, the uncertainty of the measurement results is often unknown or reduced to sample-related contributions. In this paper, we describe our approach for the systematic determination of the measurement uncertainty of the commercially available two-channel spectrophotometer Agilent Cary 5000 in accordance with the Guide to the expression of uncertainty in measurements. We focus on the instrumentation-related uncertainty contributions rather than the specific application and thus outline a general procedure which can be adapted for other instruments. Moreover, we discover a systematic signal deviation due to the inertia of the measurement amplifier and develop and apply a correction procedure. Thereby we increase the usable dynamic range of the instrument by more than one order of magnitude. We present methods for the quantification of the uncertainty contributions and combine them into an uncertainty budget for the device.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Instrumentation
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In: Review of Scientific Instruments, Vol. 88, No. 1, 015105, 12.01.2017.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Instrumentation-related uncertainty of reflectance and transmittance measurements with a two-channel spectrophotometer
AU - Peest, Christian
AU - Schinke, Carsten
AU - Brendel, Rolf
AU - Schmidt, Jan
AU - Bothe, Karsten
N1 - Publisher Copyright: © 2017 Author(s). Copyright: Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2017/1/12
Y1 - 2017/1/12
N2 - Spectrophotometers are operated in numerous fields of science and industry for a variety of applications. In order to provide confidence for the measured data, analyzing the associated uncertainty is valuable. However, the uncertainty of the measurement results is often unknown or reduced to sample-related contributions. In this paper, we describe our approach for the systematic determination of the measurement uncertainty of the commercially available two-channel spectrophotometer Agilent Cary 5000 in accordance with the Guide to the expression of uncertainty in measurements. We focus on the instrumentation-related uncertainty contributions rather than the specific application and thus outline a general procedure which can be adapted for other instruments. Moreover, we discover a systematic signal deviation due to the inertia of the measurement amplifier and develop and apply a correction procedure. Thereby we increase the usable dynamic range of the instrument by more than one order of magnitude. We present methods for the quantification of the uncertainty contributions and combine them into an uncertainty budget for the device.
AB - Spectrophotometers are operated in numerous fields of science and industry for a variety of applications. In order to provide confidence for the measured data, analyzing the associated uncertainty is valuable. However, the uncertainty of the measurement results is often unknown or reduced to sample-related contributions. In this paper, we describe our approach for the systematic determination of the measurement uncertainty of the commercially available two-channel spectrophotometer Agilent Cary 5000 in accordance with the Guide to the expression of uncertainty in measurements. We focus on the instrumentation-related uncertainty contributions rather than the specific application and thus outline a general procedure which can be adapted for other instruments. Moreover, we discover a systematic signal deviation due to the inertia of the measurement amplifier and develop and apply a correction procedure. Thereby we increase the usable dynamic range of the instrument by more than one order of magnitude. We present methods for the quantification of the uncertainty contributions and combine them into an uncertainty budget for the device.
UR - http://www.scopus.com/inward/record.url?scp=85009494256&partnerID=8YFLogxK
U2 - 10.1063/1.4973633
DO - 10.1063/1.4973633
M3 - Article
C2 - 28147649
AN - SCOPUS:85009494256
VL - 88
JO - Review of Scientific Instruments
JF - Review of Scientific Instruments
SN - 0034-6748
IS - 1
M1 - 015105
ER -