DYNEO DD-300F 230V Refrigerated and Heating Circulators

Category Refrigerated Baths
Manufacturer Julabo
Country of manufacture Germany

DYNEO™ refrigerated/heating circulators are suitable for temperature applications with circulation to an external apparatus or immersing a device in the bath tank. Refrigeration combinations afford low temperature capabilities from -20 °C to -50 °C with an upper temperature limit of 200 °C. The DYNEO™ DD circulator incorporates easy change-over for control of fluid circulation internally or externally. Unit fittings M16x1 male threaded adapters including a pair of 8 and 12 mm hose barbs. A color TFT display with central rotary knob controller includes a multi-lingual interface, integrated programmer, Pt100 port for external temperature control, USB connection for external PC control and data-logging with digital options including RS232 port or an analog module interface for voltage or current control. PID temperature control provides ±0.01 °C stability. Infinitely variable centrifugal pump capacity of 8-27 L/min with pressure to 1.5-10.2 psi. Stainless steel bath tanks with integrated drain port.
Class III (FL) according to DIN 12876-1.

Included with each unit: 2 each barbed fitting for tubing 8 and 12 mm inner dia. (pump connections M16x1 male)


  • Powerful cooling machines
  • Suitable for internal and external applications
  • Optimized cooling coil design saves space in the bath tank
  • Powerful and infinitely adjustable pressure pump
  • Flow rate 27 l/min, pressure 8.7 psi
  • Easy switching between internal and external circulation
  • Large color TFT display, multilingual interface
  • Central rotary knob (controller) simplifies operation
  • Integrated programmer for 8 x 60 program steps
  • Integrated external Pt100 connection
  • USB port
  • RS232 interface or analog interfaces (optional)
  • Bath cover included with delivery
  • Integrated drain makes emptying liquid easy and safe.
Key Attributes
Type Stirred / Circulating Baths
Incubation Yes
Refrigeration Yes
Temp Range (°C) A -25 to 200 (DD-300F model is -25)
Capacity (L) 4
Circulation 8-27 l/min
Brand Julabo
MaxFlow Rate (l/min) 27
Temp Stability (°C) ±0.01
Timer Yes
Alarms Yes
Digital or Mechanical Digital or analog option
Data connection USB and Optional analog or RS232 connection
Tank Material Stainless Steel
Sample Agitation No
Media Racks Available No
Warranty (years) 1
Weight (lb) Varies by model
Width (in) Varies by model
Depth (in) Varies by model
Height (in)

Varies by model


Manufacturer Specifications



Dimensions (W × L × H)

9.4 x 16.5 x 26 in.

Filling volume

3 ... 4 l


61.1 lbs

Pump connections

M16x1 male

Barbed fittings inner diameter

8/12 mm

Working temperature range

-25 ... +200 °C

Temperature stability

±0.01 °C

Setting the resolution of the temperature display

0.01 °C

Ambient temperature

+5.0 ... +40.0 °C

Data based on voltage version:

115V/60Hz (Nema N5-15 Plug)

Heating capacity

1 kW

Cooling capacity (Medium: Ethanol)

200°C = 0.3 kW / 20°C = 0.3 kW / 10°C = 0.3 kW / 0°C = 0.27 / -10°C = 0.19 / -20°C = 0.08 kW

Pump capacity flow rate

8 ... 27 l/min

Pump capacity flow pressure

1.5 ... 10.2 psi

Viscosity max.

50 cST

Refrigerant stage 1


Global Warming Potential for R134a


Filling volume

100 g

Carbon dioxide equivalent

0.143 t

Bath tank

Stainless steel

Bath cover


Usable bath opening (W x L / D)

5.1 x 5.9 / 5.9 in.

Cooling of compressor

1-stage Air

Classification according to DIN12876-1

Classification III (FL)

Pump function

Pressure Pump

Pump type

Immersion Pump

External pt100 sensor connection


Integrated programmer

8x60 steps

Temperature control


Absolute temperature calibration

3 Point Calibration

Temperature displayTemperature display

3.5" TFT Display

Temperature settingTemperature setting

Shaft Encoder

Electronic Timer hr:min

99 ... 59


select from options below to see SKU

Green Leaf
All shipments originating from Laboratory Supply Network are carbon neutral!

Do you need assistance?

We have experts standing by to assist you with your purchase. Call now at +1 603-652-1395 or contact us by clicking the button below.

Customer reviews

No reviews yet