PRESTO W91tt Process system
11 kW cooling capacity for dynamic temperature changes 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.
Technical data for PRESTO W91tt
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Total dimensions (W × L × H) |
37.4 x 50 x 74.8 in. |
|---|---|
| Internal usable expansion volume | 40 l |
| Minimal process volume | 28 l |
| Active heat exchanger volume | 16 l |
| Weight | 1918 lbs |
| Pump connections | M38x1.5 male |
| Cooling Water Connection | G¾ in. |
| 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:
| Heating capacity | 36 kW | ||||||||||||||||||||||||||||||||
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Cooling capacity
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. |
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| Pump capacity flow pressure | 0 ... 80 l/min | ||||||||||||||||||||||||||||||||
| Pump capacity pressure | 1.5 ... 43.5 psi | ||||||||||||||||||||||||||||||||
| Viscosity max. | 50 cSt | ||||||||||||||||||||||||||||||||
| Power consumption | 45 A | ||||||||||||||||||||||||||||||||
| Cooling of compressor | 2-stage Water |
|---|---|
| Cooling water pressure max. | 87 psi |
| Max. heat dissipated by unit into cooling water | 28 kW |
| to provide full cooling capacity according to catalog values | |
| Cooling water temperature range | 10 ... 15 °C |
|---|---|
| Cooling water difference pressure | 21.8 ... 87 psi |
| Cooling water consumption 2 | 16 ... 20 l/min |
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2 Cooling water consumption may vary outside recommended cooling water properties. |
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| Cooling water temperature range | 5 ... 35 °C |
|---|---|
| Cooling water difference pressure 3 | 7.3 ... 87 psi |
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3 At cooling water temperatures of 25 °C and higher, the minimum differential pressure is 1 bar. |
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| 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) |
| 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 |
| 9421912.07.TT | 400V/3PNPE/50Hz (Without Plug) (R404A) |
|---|---|
| 9421912.S1.07.TT | 400V/3PNPE/50Hz (Without Plug) (R449A) |
| 9421912.17.TT | 480V/3P(N)PE/60Hz (Without Plug) (R404A) |
PRESTO W91tt 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.
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