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The main task for this very small heating circulator is temperature control of instruments, such as viscometers, photometers, refractometers or small autoclaves and reaction vessel at different temperatures. A bath opening for direct temperature control of immersed samples is also available; robust design using high grade stainless steel inside and outside the bath and temperature resistant polymer; bath is equipped with handles and drain opening; 2-speed power-pump to reduce turbulences in open baths, wear-free; integrated overload protection; user-resettable, adjustable overtemperature cut-out and low liquid level protection; easy to operate by only 4 navigation keys; electronic PID control using a highly sensitive Pt 1000 sensor for excellent temperature accuracy; RS 232C interface as standard; user-defined fixed temperatures with separate RTA for each temperature; display resolution selectable between 0.1 and 0.01 deg C; limitation of the usable temperature range by high and low temperature setting; 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; built-in ETC (External Temperature Control) with a connection for an external Pt 100 sensor; bath volume 3 l; max. temperature 200 deg C.