PRESTO W91 Process system

11 kW cooling capacity for dynamic temperature change down to -91 °C

Best heating capacity combined with high cooling capacity – those are the key features of the W91 units. The units are just as ready for embedding into pilot plants as they are for use in material and component testing.

The highly dynamic temperature control systems PRESTO are designed for high-precision temperature control for a wide range of applications such as reactor vessels or material stress tests. Moreover, by using efficient components, the process systems can compensate exothermic and endothermic reactions exceptionally fast. Permanent internal monitoring and self-lubricating pumps ensure a long life-time. In addition, numerous interfaces offer many remote control possibilities across networks or for integration into higher-level control systems.

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Performance data depends on the mains voltage in the country of use. Please select:

Country of use | Mains voltage | Plug | JULABO voltage version code
W91
see refrigerant variants
Working temperature range -91 ... +250 °C
Temperature stability ±0.05 ... ±0.2 °C
Heating capacity 18 kW
Pump capacity flow pressure 0 ... 80 l/min
Pump capacity pressure 0.1 ... 3 bar
Total dimensions
(W × L × H)		 95 x 127 x 190 cm
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Product Features

  • Cooling capacity up to 11 kW
  • Temperature stability ±0.05 °C ... ±0.2 °C
  • Ambient temperature range +5 °C to +40 °C
  • Built-in 5.7’’ industrial color touchscreen
  • Analog connections, RS485, Profibus DP (accessory)
  • External Pt100 sensor connection
  • Second external Pt100 sensor connection (accessory)
  • Alarm output
  • Pump pressure up to 3 bar, max. flow rate 80 l/min

Technical data for PRESTO W91

Overview

Dimensions and volumes
Total dimensions
(W × L × H) 		95 x 127 x 190 cm
Internal usable expansion volume 40 l
Minimal process volume 28 l
Active heat exchanger volume 16 l
Weight 870 kg
Pump connections M38x1.5 male
Cooling Water Connection G¾ in
Temperature values
Working temperature range -91 ... +250 °C
Temperature stability ±0.05 ... ±0.2 °C
Setting the resolution of the temperature display 0.01 °C
Temperature display resolution 0.01 °C
Ambient temperature +5 ... +40 °C

Performance data depends on the mains voltage in the country of use. Please select:

Country of use | Mains voltage | Plug | JULABO voltage version code
Performance values
Heating capacity 18 kW
Cooling capacity
Refrigerant variant
9421912.07
Medium: Ethanol
°C 20 0 -20 -40 -60 -80 -90
kW 1 11 11 11 10.5 8 2 0.8
Refrigerant Information Refrigerant stage 1 Refrigerant stage 2
Refrigerant R404A R23
Global Warming Potential 3922 14800
Filling weight 4500 g 1250 g
Carbon dioxide equivalent 17.649 t 18.5 t
Refrigerant variant S1
9421912.S1.07
Medium: Ethanol
°C 20 0 -20 -40 -60 -80 -90
kW 1 11 11 10.5 10.5 8 2 0.8
Refrigerant Information Refrigerant stage 1 Refrigerant stage 2
Refrigerant R449A R23
Global Warming Potential 1397 14800
Filling weight 4500 g 1250 g
Carbon dioxide equivalent 6.2865 t 18.5 t

1 Performance specifications measured in accordance with DIN 12876. Cooling capacities up to 20 °C measured with ethanol; over 20 °C with thermal oil unless otherwise specified. Performance specifications apply at an ambient temperature of 20 °C. Performance values may differ with other bath fluids.

Pump capacity flow pressure 0 ... 80 l/min
Pump capacity pressure 0.1 ... 3 bar
Viscosity max. 50 cSt
Power consumption 43 A
Cooling
Cooling of compressor 2-stage Water
Cooling water pressure max. 6 bar
Max. heat dissipated by unit into cooling water 28 kW

Recommended cooling water properties
to provide full cooling capacity according to catalog values
Cooling water temperature range 10 ... 15 °C
Cooling water difference pressure 1.5 ... 6 bar
Cooling water consumption 2 16 ... 20 l/min

2 Cooling water consumption may vary outside recommended cooling water properties.


Permissible cooling water properties
Cooling water temperature range 5 ... 35 °C
Cooling water difference pressure 3 0.5 ... 6 bar

3 At cooling water temperatures of 25 °C and higher, the minimum differential pressure is 1 bar.

Other
Sound pressure level 74 dbA
Classification
according to DIN12876-1 		Classification III (FL)
IP Code
according to IEC 60529 		IP 21
Pump type Centrifugal Pump (Magnetically coupled)
Electronics
Interfaces Alarm output / Ethernet / Modbus TCP/IP / Profibus optional / REG/EPROG optional / RS232 / RS485 optional / SD memory card / Standby-Input optional / USB
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 display 5.7" TFT Touchscreen
Temperature setting Touchscreen
Available voltage versions
9421912.07 400V/3PNPE/50Hz (Without Plug) (R404A)
9421912.S1.07 400V/3PNPE/50Hz (Without Plug) (R449A)
9421912.17 480V/3P(N)PE/60Hz (Without Plug) (R404A)

Overview

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Cool-down time

Medium: Thermal HL

Pump capacity

Accessory for PRESTO W91

Downloads for PRESTO W91

We would also be happy to send you our printed catalogs and brochures by post.

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PRESTO W91 Benefits

Touch display. Perfect operation.

With the touch display, the user always has an overview of all values and functions. The intuitive and multilingual menu structure enables perfect control.

Convenience for several users

Administrator level for customizing instrument settings, user levels with limited permissions for fast and safe defined access, password protection, all levels adjustable

100 % Cooling capacity

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

Intelligent temperature control.

Intelligent cascade control - automatic and self-optimizing adaptation of the PID control parameters with external stability of +/- 0.05 °C.

Show all 21 benefits

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