| 摘要 |
<p>Temp. regulating appts., whereby the temps. of the appts. is maintained at a constant by regulating a heat transfer medium vapour, includes a number of pressure sensing bellows which communicate via thin tubes with heating vessels. Each pressure sensing bellows has a lever for actuating a micro switch. Counter bellows are coupled to the pressure sensing bellows in an opposed relationship and each counter bellows communicates with one common constant pressure chamber. The pressure in the counter bellows is regualted as a whole by varying the pressure in the common constant pressure chamber. As the pressure in the counter bellows varies the temperature of the heating vessels as a whole is regulated.</p> |
