| Zugriffsnummer | 21460 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | Temperature control in the μK range for density measurements |
| Autor(in); Institution |
Bettin, Horst; 3.3, Chemisch-physikalische Stoffeigenschaften, PTB-Braunschweig
|
| Quelle/Jahr | IMEKO TC3 & TC16 & TC22 International Conference : 27th November - 1st December, 2007, Merida, Mexico:(2007) |
| Availability | [CD-ROM] ; file name: ID-064.pdf |
| Herausgeber(in) |
IMEKO
|
| URL | |
| Verlag | Mexico: CENAM |
| Konferenzangaben | IMEKO 20th TC3, 3rd TC16 and 1st TC22 International Conference 2007, Merida, 27-30, November, 2007, Mexico |
| Freie Schlagworte | density measurements ; temperature controlling ; temperature regulation ; electronic temperature fixed point |
| Zusammenfassung | A temperature controller for density measurements is presented that allows temperature stabilities of about 10 μK to be achieved near 20°C. The controller consists of a function generator, a thermistor in a Wheatstone bridge, a differential amplifier, a lock-in amplifier, a PC and a power source for the heater. Two of the controllers are also used to stabilize an electronic temperature fixed point at 20°C that will help to compare the realizations of the 20°C temperature in different laboratories with an uncertainty below 0.5 mK. |
