PRESTO W55 Process System

Category Dynamic Temperature Control Systems
Manufacturer Julabo
Country of manufacture Germany

The powerful W55 regulates temperatures with high precision and convinces with faster cool-down and heat-up times. It is ideal for use in large external applications such as reactor temperature control, material stress testing or temperature simulation.


  • For highly precise, external temperature applications
  • Rapid heating and cooling
  • Wide working temperature ranges without changing fluids
  • Highest performance with small footprint
  • Space-saving design optimizes space utilization in your lab
  • 5,7” industrial color TFT touch screen
  • USB connection
  • Ethernet
  • SD-Card slot
  • RS232
  • Modbus
  • RS485 (Accessory)
  • Profibus DP (Accessory)
  • Pump pressure up to 3.2 bar, max. flow rate 76 l/min
  • Temperature stability ±0.05 °C ... ±0.1 °C
  • Second external Pt100 sensor connection (accessory)
        Key Attributes 
        Type Circulating
        Incubation Yes
        Refrigeration Yes
        Temp Range (°C) -55 ... +250°C
        Capacity (L) N/A
        Circulation External Only
        Brand Julabo
        MaxFlow Rate (l/min) 12
        Temp Stability (°C) ±0.05 to 0.1°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) 635


        Manufacturer Specifications
        Dimensions 24 x 33.3 x 49.2 in.
        Filling volume expansion vessel 11.5 l
        Internal usable expansion volume 7.5 l
        Minimal process volume 11.5 l
        Active heat exchanger volume 7 l
        Weight 634.9 lbs
        Pump connections M30x1.5 male
        Cooling Water Connection G¾ in.
        Working temperature range -55.0 ... +250.0 °C
        Temperature stability +/-0.05 ... +/-0.1 °C
        Setting the resolution of the temperature display 0.01 °C
        Temperature display resolution 0.01 °C
        Ambient temperature +5.0 ... +40.0 °C
        Data based on voltage version: 230V/3PPE/60Hz (Without Plug)
        Heating capacity  15 kW
        Cooling capacity (Medium: Ethanol) 200°C/13.5kW | 20°C/15kW | 0°C/10kW | -10°C/6.5 kW | -20°C/4kW | -30°C/2.5kW | -40°C/1.2kW | -50°C/0.3kW
        Pump capacity flow rate 35 ... 80 l/min
        Pump capacity flow pressure 7 ... 46.4 psi
        Viscosity max. 50 cST

        Refrigerant stage 1

        Global Warming Potential for R452A 2140
        Filling volume 1600 g
        Carbon dioxide equivalent 3.424 t
        Cooling of compressor 1-stage Water
        Cooling water pressure max. 87 ... 79.8 psi
        Cooling water difference pressure 7.3 ... 87 psi
        Cooling water temperature max. 35 °C
        1.0Cooling water consumption 2 ... 12 l/min
        Sound pressure level 65 dbA
        Classification according to DIN12876-1 Classification III (FL)
        IP Code according to IEC 60529 IP 20
        Pump type Centrifugal Pump (Magnetically coupled)
        External pt100 sensor connection integrated
        2nd external Pt100 sensor connection accessory
        Integrated programmer 8x60 steps
        Temperature control ICC
        Absolute temperature calibration 3 Point Calibration
        Temperature displayTemperature display 5.7" TFT Touchscreen
        Temperature settingTemperature setting Touchscreen

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