Temperature control in the µK range for density measurements |
|---|
| Horst Bettin |
- Abstract:
- 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.
- Keywords:
- density measurements, temperature controlling, temperature regulation, electronic temperature fixed point
- Download:
- IMEKO-TC3-2007-064u.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC3
- Event name:
- Cultivating Metrological Knowledge
- Title:
20th Conference on Measurement of Force, Mass and Torque (together with 3rd TC16 Conference on Pressure Measurement & 1st TC22 Conference on Vibration Measurement)
- Place:
- Merida, MEXICO
- Time:
- 27 November 2007 - 01 December 2007