Refrigerated - 2.5 Liter Heating Circulators - TopTech Series

Category Stirred/Circulating Baths Accessories
Manufacturer Julabo

JULABO Refrigerated & Heating Circulators for heating and cooling are suitable for external temperature tasks and for temperature applications directly in the bath. Powerful circulating pump systems and high heating and cooling capacities guarantee short heat-up and cool-down times. The inevitable dust accumulation that occurs in refrigeration systems is solved by means of an easily removed venting grill, which allows for easy cleaning. Depending on the model, the units are equipped with handles or castors for an easy transportation. All models have a drain screw on the front allowing the fluid to be drained easily. The compact assembly of each unit enables a space to be saved in the laboratory. 


  • MULTI-DISPLAY (LED) for actual and setpoint values, warning/safety functions and pump stage
  • Keypad for setpoints, warning/safety values and menu functions
  • PID2 temperature control with drift compensation
  • ATC3 3-Point-Calibration
  • Early warning system for low liquid level (DBGM 203 06 059.8)
  • Adjustable high temperature cut-out, visible via display
  • RS232 interface for online communication
  • SMART PUMP electronically adjustable pump stages
  • Active Cooling Control



Several values at a glance
Large Multi-Display (LED), easy to read across the room, for actual value and up to 3 setpoints, warning functions, high temperature cut-off, selected pump stages (resolution 0.01/0.1 °C)

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

Temperature Control
Highly precise
PID Temperature control with drift compensation and adjustable control parameters, temperature stability ±0.01...±0.02 °C

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

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

Serial connection
RS232 interface for PC connection, e.g. for data communication and recording of measured values

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
Type Stirred / Circulating Baths Accessories
Incubation Yes
Refrigeration Yes
Temp Range (°C) R -35 to 150
Capacity (L) 2.5
Brand Julabo
MaxFlow Rate (l/min) 11 - 16
Temp Stability (°C) ±0.02
Timer Yes
Alarms Yes
Digital or Mechanical Digital
Data connection Yes
Tank Material Stainless Steel
Sample Agitation No
Media Racks Available No
Warranty (years) 1
Weight (lb) 81
Width (in) 12.2
Depth (in) 16.5
Height (in) 25.2
Manufacturer Specifications
Model FP35-MA 
Sku No. 9153618
Model series TopTech
Working temperature range (°C) -35 ... +150
Temperature control PID
Temperature stability (°C) ±0.02
Setting / display resolution 0.01 (-9.99...99.99) / 0.1 °C
Integrated programmer N/A
Temperature Display LED
Heating capacity (kW) 1
Cooling capacity (Medium Ethanol) °C 20,   0,   -20
Cooling capacity (Medium Ethanol) kW 0.45,   0.39,   0.15
Pump capacity flow rate (l/min)  11 - 16
Pump capacity flow pressure (psi) 3.3-6.5
Bath opening / bath depth (W x L / D inch) 7.1 x 4.7 / --
Pump connections M10x1
Barbed fittings diameter (inner dia. / mm)  8 / 10
Filling volume (liters) 2.5
Refrigerant R134a
External Pt100 sensor connection N/A
Digital interfaces RS232, Optional Profibus
Ambient temperature 5...40 °C
Dimensions W x L x H (inch) 12.2 x 16.5 x 25.2
Weight (LBS) 81
Classification according to DIN12876-1 Classification III (FL)
Included with each unit 2 barbed fittings suitable for tubing 8 and 10 mm inner dia. (pump connections M10x1 female)
Cooling of compressor Air
Power requirement V / Hz / A 115/60/14

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

The TopTech 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 TopTech RS232 port enables connection to a PC using a null modem cable.


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