JULABO ME-26 Heating Circulators - Manual (Page 5)

ME
5
Operating manual
1. Intended use
JULABO circulators have been designed to control the temperature of specific fluids in a bath tank.
The units feature pump connections for temperature control of external systems (loop circuit).
JULABO circulators are not suitable for direct temperature control of foods, semi-
luxury foods and tobacco, or pharmaceutical and medical products.
Direct temperature control means unprotected contact of the object with the bath
medium (bath fluid).
1.1. Description
1x10
PID3
ATC
3
RS232
Pt100
PUMP
SMART

The circulators are operated via the splash-proof keypad. The microprocessor
technology allows different values to be set, stored, and displayed on the VFD
COMFORT-DISPLAY. Three menu keys facilitate the adjustment of setpoints,
warning and safety functions, and menu functions.

Temperature- and time-dependent processes can be stored and executed using
the integrated programmer.

The adjustable PID cascade temperature control automatically adjusts the heat
supply to the thermal requirements of the bath.

Absolute Temperature Calibration (ATC3) provides high temperature stability at all
points in the bath. With the 3-point calibration, an offset is adjusted at three
temperatures to ensure an accurate temperature pattern at the selected spot in the
bath over the entire temperature range.

Electrical connections:
RS232 interface for modern process technology without an additional interface.
Connection for external Pt100 sensor for external temperature measurement and
control.
Alarm output for external alarm message or control of JULABO refrigerating baths
or solenoid valve (cooling water).

The excess temperature protection according to IEC 61010-2-010 is a safety
device independent from the control circuit. Its safety value can be displayed and
adjusted on the VFD COMFORT-DISPLAY.

The early warning system for low level signals that bath fluid needs to be refilled
before the low level protection according to IEC 61010-2-010 triggers a safety
shutdown of the main functional elements.

Intelligent pump system: the pump capacity (electronically adjustable via the motor
speed) can be adapted to different conditions for internal and external temperature-
control applications.