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.
Performance data depends on the mains voltage in the country of use. Please select:
Country of use | Mains voltage | Plug | JULABO voltage version code
PRESTO W91tt
Order No.
see refrigerant variants
Working temperature range
-91 ... +250 °C
Temperature stability
±0.05 ... ±0.2 °C
Heating capacity
36 kW
Cooling capacity
Refrigerant variant
Order No.
9421912.07.TT
Medium: Ethanol
°C
20
0
-20
-40
-60
-80
-90
kW*
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
Order No.
9421912.S1.07.TT
Medium: Ethanol
°C
20
0
-20
-40
-60
-80
-90
kW*
11
11
11
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
* 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.
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
Dimensions and volumes
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
36 kW
Cooling capacity
Refrigerant variant
Order No.
9421912.07.TT
Medium: Ethanol
°C
20
0
-20
-40
-60
-80
-90
kW*
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
Order No.
9421912.S1.07.TT
Medium: Ethanol
°C
20
0
-20
-40
-60
-80
-90
kW*
11
11
11
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
* 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.
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.
