Julabo HighTech Ultra-Low Refrigerated & Heated 24 Liter Circulators

Overview

Superior models for the most demanding applications
JULABO Ultra-Low Refrigerated Circulators for heating and cooling are suitable for external temperature tasks. Powerful circulating pump systems and high heating and cooling capacities guarantee short heat-up and cool-down times. ACC ‘Active Cooling Control‘ provides active cooling control across the whole temperature range. An energy saving feature with only minor loss of heat is provided by the proportional cooling capacity control in the ‘FP’ refrigeration units. The inevitable dust accumulation that occurs in refrigeration systems is solved by means of an easily removed venting grill, which allows for easy cleaning. The units are equipped with handles or castors for easy transportation. All models have a drain tap on the front allowing the fluid to be drained easily. Additionally the instruments are equipped with an improved insulation to help avoid ice-formation, and have a visual liquid level display. For working temperatures -60°C to +100 °C. or +150 °C. Typical applications: Temperature applications to jacketed reaction vessels, autoclaves, miniplant installations, kilo labs, freezing point determination, calibration at low temperatures, petroleum testing, etc.

Models are available in the following options:

• Models are available with a bath opening, suitable for external and internal application, unless designated with an N.
• N = Models designated for external applications only offer a small filling nozzle to fill the bath liquid. No items can be immersed into the bath tank. Advantage is less cooling power loss, as there is no bath opening. (these models are designed with an N).
• FP = Models which offer proportional cooling control to ensure energy-saving performance and to reduce heat generation to the environment.
• W = Models are available in air or water-cooled. Water models are designated with a W. The advantages of water cooling are low noise level and almost zero emission of heat. But of course chilled water must be available with the customer.
• 150 = Models are also available in an extended working temperature range of 150°C

  Advantages

Your advantages

• VFD COMFORT DISPLAY
• LCD DIALOG DISPLAY backlit for convenient interactive operation
• Keypad for setpoints, warning/safety values and menu functions
• ICC (Intelligent Cascade Control), self-optimizing temperature control
• TCF Temperature Control Features to optimize the control behaviour
• ATC3 3-Point-Calibration
• Pt100 External sensor connection for measurement and control
• SMART PUMP, electronically adjustable pump stages
• Early warning system for low liquid level (DBGM 203 06 059.8)
• Adjustable high temperature cut-out, visible via display
• RS232/RS485 interface for online communication
• Integrated programmer for 6 x 60 program steps
• Connections for solenoid valve and HSP booster pump
• Proportional cooling control
• Active Cooling Control

Characteristics

Display 
A perfect view
Ample, easy to read VFD Comfort display for simultaneous display of 3 values, warning functions, high temperature cut-off, pump stages (resolution 0.01 °C) 

Additional plain text information
Comfortable LCD dialog display for interactive operation with plain text display 

Pump stage and liquid level
Backlit indicator for selected pump stages and filling volume on Presto® PLUS, Magnum 91 & Forte HT

Operation 
Comfortable and detailed
Comfortable keypad with additional menu functions for pump stages, calibration, control parameters, programmer, warnings, etc.

Temperature Control
For perfect results
‘Intelligent Cascade Control’, automatic & self optimizing adjustment of PID control parameters, temperature stability ±0.005 °C internal, <±0.05 °C external 

Full control
‘Temperature Control Features’ for individual optimization, access to all important control parameters, additional settings for band limit, limits, Co-Speedfactor etc. 

Highest measuring accuracy
‘Absolute Temperature Calibration’ for manual compensation of a temperature difference, 3-point calibration

Refrigeration Technology
Energy saving cooling
Proportional cooling control for automatic adjustment of cooling power or temporary switch-off of compressor as needed to save up to 90 % energy in comparison to unregulated cooling machines 

Consistent cooling capacity
Easily removable venting grid for quick and easy cleaning 

100 % Cooling capacity
‘Active Cooling Control’ for cooling available throughout the entire working temperature range, fast cool-down even at higher temperatures 

Condensation and ice protection
A heated cover plate prevents condensation or ice build-up in the bath

Technical Features
Clever pump system
Reliable and consistent pump capacity, electronically adjustable pump stages 

Control from the external application
External Pt100 sensor connection for precise measurement and control directly in the external application 

Connection compliant to standard
RS232/RS485 dual-interface for serial data transmission according to EIA-485 industry standard (2-wire bus technology), upgradable with Profibus DP 

Optimal program control
For the execution of time and temperature dependant profiles, 6 temperature profiles with 60 steps max., with real time clock 

Automatic control of operating time
Electronic countdown-timer function for timer-programmed unit shut-down, standby mode after programmed time expires

Warning & Safety Functions
Early warning system for low liquid level
Maximum safety for applications, optical and audible alarm, allows user to refill bath fluid before the unit shuts down 

Early warning system for high/low temperature limits
Maximum safety for applications, optical and audible alarm, convertible to automated cut-off function 

Enhanced protective functions 
Maximum safety, adjustable high temperature cut-off or dry-running protection, additional display of setpoints permits easy and precise adjustments 

For flammable bath fluids
Classification III (FL) according to DIN 12876-1

Key Attributes

Manufacturer Specifications

FAQ

Do the Julabo HighTech Circulators have the capability to ramp up temperature over a set time period?

The HighTech circulators can be programmed to ramp. The best way to accomplish this is to use the free version of Julabo's EasyTEMP software. EasyTEMP provides a PC interface to create a temperature profile which is much easier than programming directly circulator. The HighTech RS232 port enables connection to a PC using a null modem cable.