3. Measurement and sensor
Since the aim is to determine the variable mass of the sample, the measuring device must be capable of continuously recording a mass indication. Conventional balances are not suitable for this purpose; special instruments have been designed specifically for this type of application. In particular, great care must be taken to maintain a stable measurement throughout the experiment. Unlike a conventional balance, the time scale of the measurement can exceed several hours.
3.1 Balance
Most balances on the market (figure 1 ) are based on a beam or parallelogram mechanism operating on the basis of a zero method, i.e. the position of the moving part is servo-controlled...
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Measurement and sensor
Bibliography
Periodicals
Thermochimica Acta/Elsevier Science http://www.elsevier.nl
Journal of Thermal Analysis and Calorimetry/KLUWER Academic Publishers http://www.kap.nl
Standards and norms
French Standards Association (AFNOR)
- Vocabulaire international de métrologie - Concepts fondamentaux et généraux et termes associés (VIM) - NF ISO/CEI GUIDE 99 - 08-11
- Plastics – Thermogravimetry (TG) of polymers – Part 1: General principles - ISO 11358-1 - 2013
- Plastics – Thermogravimetry (TG) of polymers...
International Organization for Standardization (ISO)
Organizations
CTAC: International Confederation for Thermal Analysis and Calorimetry in Europe and the United States
AFCAT: French Association for Calorimetry and Thermal Analysis
AICAT: Associazione Italiana di Calorimetria e Analisi Termica
GEFTA: Gesellschaft für Thermische Analyse
NATAS: North American Thermal Analysis Society...
Directory
Suppliers of certified standards
LGC: Laboratory of The Government Chemist (Great Britain) http://www.Lgc.co.uk
NIST: The National Institute of Standards and Technology (United States) http://www.nist.gov
Instrument manufacturers
...
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