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PRESTO Process System Compact Circulators

Category Stirred / Circulating Baths
Manufacturer Julabo
Country of manufacture Germany
Overview

The A30, A40 and W40 process circulators combine high performance and a very compact design with the advantages of the PRESTO series for a working temperature range down to -30 or -40 °C.

Air-cooled or water-cooled The new PRESTO units are available as air-cooled or water-cooled units.

  • Air-cooled units do not require water and can be installed anywhere. If you are looking for a flexible solution or if you expect to move the unit frequently, an air-cooled unit will be the best choice. However, it is important to know that air-cooled units slightly elevate the ambient temperature during operation.
  • Water-cooled units must be connected to an existing cooling water line. These units are even more quiet and can be virtually enclosed during operation. Robust heat exchangers are installed in the water-cooled new PRESTO units. Clogging of the heat exchanger by particles or impure water is virtually impossible.

Features:

  • Heating capacity up to 2.7 kW
  • Cooling capacity up to 1.2 kW
  • Pump pressure up to 19 psi, max. flow rate 40 l/min
  • Temperature stability ±0.01 °C ... ±0.05 °C
  • Built-in 5.7’’ industrial color touchscreen
  • Ports for USB, Ethernet, RS232, Modbus
  • Alarm output
  • External Pt100 sensor connection
  • Analog connections, RS485, Profibus DP (accessory)
  • Second external Pt100 sensor connection for A40 and W40 (accessory)
  • USB (host and device)
  • Ethernet interface
  • Slot for SD cards
  • Modbus
  • RS232

 

Key Attributes
Type Circulating
Incubation Yes
Refrigeration Yes
Temp Range (°C) -40 ... +250°C (-30°C for A30 model)
Capacity (L) N/A
Circulation External Only
Brand Julabo
MaxFlow Rate (l/min) 15, or 38
Temp Stability (°C) ±0.01 to 0.05°C
Timer Yes
Alarms Yes
Digital or Mechanical Digital
Data connection Yes
Tank Material N/A
Sample Agitation No
Media Racks Available No
Warranty (years) 1
Weight (lb) 137-174

 

Manufacturer Specifications 

Dimensions and volumes

A30

A40

W40

Dimensions (W × L × H)

9.8 x 23.2 x 24.4 in.

13 x 23.2 x 26.4 in.

13 x 23.2 x 26.4 in.

Internal usable expansion volume

1.5 l

2.7 l

2.7 l

Minimal process volume

2.4 l

3.5 l

3.5 l

Active heat exchanger volume

1.4 l

1.7 l

1.7 l

Weight

136.7 lbs

174.2 lbs

172 lbs

Pump connections

M24x1.5 male

M24x1.5 male

M24x1.5 male

Working temperature range

-30.0 ... +250.0 °C

-40.0 ... +250.0 °C

-40.0 ... +250.0 °C

Temperature stability

±0.01 ... ±0.05 °C

±0.01 ... ±0.05 °C

±0.01 ... ±0.05 °C

Setting the resolution of the temperature display

0.01 °C

0.01 °C

0.01 °C

Temperature display resolution

0.01 °C

0.01 °C

0.01 °C

Ambient temperature

+5.0 ... +40.0 °C

+5.0 ... +40.0 °C

+5.0 ... +40.0 °C

Data based on voltage version:

208V/60Hz (Nema N6-20 Plug)

208V/60Hz (Nema N6-20 Plug)

208V/60Hz (Nema N6-20 Plug)

Heating capacity

2 kW

2.3 kW

2.3 kW

Cooling capacity (Medium: Ethanol)

200°C=0.5kW \ 100°C=0.5kW \ 20°C=0.5kW \ 0°C=0.4kW \ -10°C=0.3kW \ -20°C=0.2kW \ -30°C=0.05kW

200°C=1.2kW \ 100°C=1.2kW \ 20°C=1.2kW \ 0°C=0.9kW \ -10°C=0.8kW \ -20°C=0.6kW \ -30°C=0.3kW \ -40°C=0.1kW

200°C=1.2kW \ 100°C=1.2kW \ 20°C=1.2kW \ 0°C=1kW \ -10°C=0.8kW \ -20°C=0.55kW \ -30°C=0.3kW \ -40°C=0.07kW

Pump capacity flow rate

15 l/min

16 ... 38 l/min

16 ... 38 l/min

Pump capacity flow pressure

7.3 bar

1.5 ... 18.9 psi

1.5 ... 18.9 psi

Viscosity max.

50 cST

50 cST

50 cST

Refrigerant stage 1

R449A

R449A

R449A

Global Warming Potential for R449A

1397

1397

1397

Filling volume

314 g

430 g

380 g

Carbon dioxide equivalent

0.439 t

0.601 t

0.531 t

Cooling of compressor

1-stage Air

1-stage Air

1-stage Water

Other

N/A

N/A

Cooling water pressure max. 87 ... 79.8 psi

Sound pressure level

54 dbA

55 dbA

53 dbA

Classification according to DIN12876-1

Classification III (FL)

Classification III (FL)

Classification III (FL)

IP Code according to IEC 60529

IP 21

IP 21

IP 21

Pump type

Centrifugal Pump (Magnetically coupled)

Centrifugal Pump (Magnetically coupled)

Centrifugal Pump (Magnetically coupled)

External pt100 sensor connection

integrated

integrated

integrated

2nd external Pt100 sensor connection

not available

accessory

accessory

Integrated programmer

8x60 steps

8x60 steps

8x60 steps

Temperature control

ICC

ICC

ICC

Absolute temperature calibration

3 Point Calibration

3 Point Calibration

3 Point Calibration

Temperature display

5.7" TFT Touchscreen

5.7" TFT Touchscreen

5.7" TFT Touchscreen

Temperature setting

Touchscreen

Touchscreen

Touchscreen

Cooling Water Connection

N/A

N/A

G¾ in.

Cooling water temperature max.

N/A

N/A

40 °C

1.0Cooling water consumption

N/A

N/A

1 l/min

Cooling water difference pressure

N/A

N/A

7.3 bar

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