Julabo Presto W91ttx Process Thermostat 11kW cooling capacity for dynamic temperature changes down to -91°C

Julabo

Type: PRESTO W91ttx

Process thermostat
11 kW cooling capacity for dynamic temperature changes down to -91 °C

Best heating performance combined with high cooling capacity –
these are the core features of the W91 devices.
The devices are equally suited for installation in pilot plants as well as for use
in material and component testing.

The highly dynamic temperature control systems PRESTO are predestined to
precisely regulate temperatures in various applications such as reactor temperature control
or material stress tests.
By using efficient components, the process thermostats can extremely quickly compensate for exo-
and endothermic reactions.
Permanent internal monitoring and self-lubricating pumps ensure a long service life.
In addition, extensive interfaces offer many options for remote control
via networks or integration into overarching control systems.

Technical data for PRESTO W91ttx:

Dimensions and volume Overall dimensions
(W × D × H) 95 x 127 x 190 cm
Internally usable expansion volume 40 l
Minimum process volume 28 l
Active heat exchanger volume 16 l
Weight 870 kg
Pump connection thread M38x1.5 external thread
Cooling water connection G¾ internal

Temperature values Operating temperature range -91 ... +250 °C
Temperature constancy ±0.05 ... ±0.2 °C
Setting of temperature display resolution 0.01 °C
Temperature display resolution 0.01 °C
Permissible ambient temperature +5 ... +40 °C

AC: 400V/3PNPE/50Hz (without plug) (R404A) 76A
IP 20

Power values Heating power 36 W

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 R404A
Global warming potential 3922
Filling weight 4500 g
Carbon dioxide equivalent 17.649 t

Refrigerant Stage 2
Refrigerant R23
Global warming potential 14800
Filling weight 1250 g
Carbon dioxide equivalent 18.5 t

Pump performance Flow rate 0 ... 70 l/min
Pump performance Delivery pressure 0.1 ... 5.5 bar
Viscosity max. 70 cSt
Current consumption 76 A

Cooling:
Cooling refrigerating machine 2-stage water
Cooling water pressure max. 6 bar
Maximum waste heat of the device to the cooling water 28 kW

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

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

Further sound pressure level 74 dbA
Class classification according to DIN12876-1 Classification III (FL)
IP classification according to IEC 60529 IP 21
Pump type Gear 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

Pt100 external sensor connection integrated
Second 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

Condition: used

Scope of delivery: (See image)

(Changes and errors in the technical data, specifications are subject to change!)

We would be happy to answer any further questions by phone.