Analyzing AVHRR thermal calibration using Sensor Stability for SST (3S) system

A new type of sensing materials for humidity measurement has been developed based on conducting polymer polypyrrole synthesised from pyrrole by adding some dopant compounds, bromide and chloride, it is prepared by potentiodynamic-electropolymerisation technique. Variation of dopant types and concentration has been carried out in order to investigate the effect of this variation to the change of polymeric conductivity when interacting with water vapour. Polypyrrole-Cl (Ppy-Cl) and polypyrrole-Br (Ppy-Br) exhibit a good principal characteristic as sensor candidate namely responding proportionally to humidly variation ranging 30% - 90% relative humidity. Characterisation test for the sensor candidates has been carried out for evaluating their linearity respond toward humidity, their stability in certain period and their reproducibility in some tests. The results show that Ppy-Cl and Ppy-Br showing good linearity respond with R value in a range of 0.95 - 0.99. Their reproducibility and sensitivity were relatively good, however their respond stability were only last in few days. The stability probably is related to the stability of resulted polymeric structure that very affected by synthesis process and dopant used. It is necessary to extend the use of other dopant materials and changing the synthesis process in order to improve sensor stability. In other hand it is also necessary to characterise other performance characteristic of the sensor namely response time, and interference effect of some volatile chemicals and other gases. Keywords: polypyrrole, potentiodynamic, electropolymerisation, humidity sensor and conducting polymer

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Sensor stability assurance problems and their relationship with the overall problems of providing system performance quality

MATEC Web of Conferences ◽

10.1051/matecconf/202032903032 ◽

2020 ◽

Vol 329 ◽

pp. 03032

Author(s):

Petr Mikhailov ◽

Zhomart Ualiyev

Keyword(s):

Material Science ◽

Quantitative Data ◽

Quality Standards ◽

Metrological Reliability ◽

Effective Technique ◽

Measuring Systems ◽

Performance Quality ◽

The Stability ◽

Domestic Companies ◽

Sensor Stability

Research has been carried out in the field of ensuring the stability of transmitters, which are designed to work in extreme conditions. The complexity of the solved problems and the need for a systemic approach, including structural, material science, are noted. Approaches of leading foreign and domestic companies - manufacturers of sensors and measuring systems to issues of metrological reliability of measuring transducers have been analyzed. Ambiguity of interpretation of the term “stability” by various developers and manufacturers of sensors is shown. Most often, the accompanying documentation for sensors, as well as prospectuses and catalogs indicate a qualitative characteristic, and very rarely quantitative parameters. At the same time, international quality standards indicate the need to disclose qualitative indicators and translate them into quantitative data. The concept of ensuring stability of sensors during their life cycle, based on international quality standards and new design and technological solutions, is proposed. On the example of the beam sensitive element of the metal film pressure sensor, a specific effective technique for stabilizing the electrophysical characteristics of the film heterostructure is shown.

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EO-1 Data Quality and Sensor Stability with Changing Orbital Precession at the End of a 16 Year Mission

Remote Sensing ◽

10.3390/rs9050412 ◽

2017 ◽

Vol 9 (5) ◽

pp. 412 ◽

Cited By ~ 7

Author(s):

Shannon Franks ◽

Christopher Neigh ◽

Petya Campbell ◽

Guoqing Sun ◽

Tian Yao ◽

...

Keyword(s):

Data Quality ◽

Orbital Precession ◽

Sensor Stability

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Analysis of the Thermal Oxidation of Tin Droplets and Its Implications on Gas Sensor Stability

Journal of The Electrochemical Society ◽

10.1149/1.1392509 ◽

1999 ◽

Vol 146 (9) ◽

pp. 3527-3535 ◽

Cited By ~ 18

Author(s):

A. Diéguez ◽

A. Romano‐Rodrı́guez ◽

J. R. Morante ◽

P. Nelli ◽

L. Sangaletti ◽

...

Keyword(s):

Thermal Oxidation ◽

Gas Sensor ◽

Sensor Stability

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Multi-parameter observations from coastal waters to the deep sea: Focus on quality control and sensor stability

2013 MTS/IEEE OCEANS - Bergen ◽

10.1109/oceans-bergen.2013.6608046 ◽

2013 ◽

Author(s):

A. Tengberg ◽

C. Waldmann ◽

P. O. J. Hall ◽

D. Atamanchuk ◽

M. Kononets

Keyword(s):

Quality Control ◽

Coastal Waters ◽

Deep Sea ◽

Sensor Stability

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Design of Low Frequency Hydrophone Based on PVDF Piezoelectric Materials

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.513-517.3085 ◽

2014 ◽

Vol 513-517 ◽

pp. 3085-3089 ◽

Cited By ~ 2

Author(s):

Zhu En Chen ◽

Zhou Wan ◽

Yi Yang Li ◽

Hao Hua Liu ◽

Xi Cun You

Keyword(s):

Piezoelectric Materials ◽

Low Frequency ◽

High Sensitivity ◽

Fast Response ◽

Piezoelectric Film ◽

Frequency Range ◽

Sensitive Material ◽

Frequency Signal ◽

Low Sensitivity ◽

Sensor Stability

In view of the existing of low frequency hydrophone in signal detection problems such as low sensitivity, frequency range is small, In this paper, application of PVDF piezoelectric film as sensitive material of low frequency hydrophone, use its advantages as fast response, high sensitivity, good mechanical properties, and so on [1], designed a kind of low frequency hydrophone, experiments are carried out to study the detection of low frequency signal. This paper introduces the structure, material and size of the hydrophone, and analyzes the experimental data. Experiments show that the sensor stability and high sensitivity, can effectively detect the low frequency acoustic wave in the water.

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