Constant Temperature Chamber with High Stability for Resistance Standards

. In this paper, a system for maintaining constant temperature in an thermostatic air chamber is described. Temperature regulation in this chamber is based on a Peliter module and a PID temperature controller. This system is designed to stabilize the temperature of resistance standards during measurements, but may be used for other purposes. Results of long-term tests and the results of the environmental conditions influence on the temperature stabilization in the chamber indicate that the system is capable of stabilizing the temperature in the chamber within ±0.01 °C. Streszczenie.