This heating circulator is mainly uesd for temperature controlling larger external systems such as heating plates, autoclaves or reaction vessels. Combined powerful pressure/suction pumps provide a good heat exchange and optimum temperature accuracy; robust design using high grade stainless steel inside and outside the bath; bath is equipped with handles and a drain opening; user-resettable, adjustable overtemperature cut-out and low liquid level protection; direct dialogue on LCD-graphic display; FuzzyStar-control with neural adaptation using fuzzy logic written into a 16-bit processor for ultra-robust temperature control; display resolution selectable between 0.1 and 0.01 deg C; RTA = Real-Temperature-Adjustment. User-adjustable correction factor to meet ISO 9004; alarm indication by FIS = Fault-Identification-System. The reason for any malfunction is clearly displayed; RS 232C interface as standard; built-in ETC (External Temperature Control) with a connection for an external Pt 100 sensor; meets the requirements of EN 61010 and is made under ISO 9001; bath volume 12 l; temperature range: 32 to 280 deg. C