PRESTO Process System Compact Circulators

Overview The A30, A40 and W40 process circulators combine high performance and a very compact design with the advantages of the PRESTO series for a working temperature range down to -30 or -40 °C. Air-cooled or water-cooled The new PRESTO units are available as air-cooled or water-cooled units. Air-cooled units do not require water and can be installed anywhere. If you are looking for a flexible solution or if you expect to move the unit frequently, an air-cooled unit will be the best choice. However, it is important to know that air-cooled units slightly elevate the ambient temperature during operation. Water-cooled units must be connected to an existing cooling water line. These units are even more quiet and can be virtually enclosed during operation. Robust heat exchangers are installed in the water-cooled new PRESTO units. Clogging of the heat exchanger by particles or impure water is virtually impossible. Features: Heating capacity up to 2.7 kW Cooling capacity up to 1.2 kW Pump pressure up to 19 psi, max. flow rate 40 l/min Temperature stability ±0.01 °C ... ±0.05 °C Built-in 5.7’’ industrial color touchscreen Ports for USB, Ethernet, RS232, Modbus Alarm output External Pt100 sensor connection Analog connections, RS485, Profibus DP (accessory) Second external Pt100 sensor connection for A40 and W40 (accessory) USB (host and device) Ethernet interface Slot for SD cards Modbus RS232   Key Attributes Type Circulating Incubation Yes Refrigeration Yes Temp Range (°C) -40 ... +250°C (-30°C for A30 model) Capacity (L) N/A Circulation External Only Brand Julabo MaxFlow Rate (l/min) 15, or 38 Temp Stability (°C) ±0.01 to 0.05°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) 137-174   Manufacturer Specifications  Dimensions and volumes A30 A40 W40 Dimensions (W × L × H) 9.8 x 23.2 x 24.4 in. 13 x 23.2 x 26.4 in. 13 x 23.2 x 26.4 in. Internal usable expansion volume 1.5 l 2.7 l 2.7 l Minimal process volume 2.4 l 3.5 l 3.5 l Active heat exchanger volume 1.4 l 1.7 l 1.7 l Weight 136.7 lbs 174.2 lbs 172 lbs Pump connections M24x1.5 male M24x1.5 male M24x1.5 male Working temperature range -30.0 ... +250.0 °C -40.0 ... +250.0 °C -40.0 ... +250.0 °C Temperature stability ±0.01 ... ±0.05 °C ±0.01 ... ±0.05 °C ±0.01 ... ±0.05 °C Setting the resolution of the temperature display 0.01 °C 0.01 °C 0.01 °C Temperature display resolution 0.01 °C 0.01 °C 0.01 °C Ambient temperature +5.0 ... +40.0 °C +5.0 ... +40.0 °C +5.0 ... +40.0 °C Data based on voltage version: 208V/60Hz (Nema N6-20 Plug) 208V/60Hz (Nema N6-20 Plug) 208V/60Hz (Nema N6-20 Plug) Heating capacity 2 kW 2.3 kW 2.3 kW Cooling capacity (Medium: Ethanol) 200°C=0.5kW \ 100°C=0.5kW \ 20°C=0.5kW \ 0°C=0.4kW \ -10°C=0.3kW \ -20°C=0.2kW \ -30°C=0.05kW 200°C=1.2kW \ 100°C=1.2kW \ 20°C=1.2kW \ 0°C=0.9kW \ -10°C=0.8kW \ -20°C=0.6kW \ -30°C=0.3kW \ -40°C=0.1kW 200°C=1.2kW \ 100°C=1.2kW \ 20°C=1.2kW \ 0°C=1kW \ -10°C=0.8kW \ -20°C=0.55kW \ -30°C=0.3kW \ -40°C=0.07kW Pump capacity flow rate 15 l/min 16 ... 38 l/min 16 ... 38 l/min Pump capacity flow pressure 7.3 bar 1.5 ... 18.9 psi 1.5 ... 18.9 psi Viscosity max. 50 cST 50 cST 50 cST Refrigerant stage 1 R449A R449A R449A Global Warming Potential for R449A 1397 1397 1397 Filling volume 314 g 430 g 380 g Carbon dioxide equivalent 0.439 t 0.601 t 0.531 t Cooling of compressor 1-stage Air 1-stage Air 1-stage Water Other N/A N/A Cooling water pressure max. 87 ... 79.8 psi Sound pressure level 54 dbA 55 dbA 53 dbA Classification according to DIN12876-1 Classification III (FL) Classification III (FL) Classification III (FL) IP Code according to IEC 60529 IP 21 IP 21 IP 21 Pump type Centrifugal Pump (Magnetically coupled) Centrifugal Pump (Magnetically coupled) Centrifugal Pump (Magnetically coupled) External pt100 sensor connection integrated integrated integrated 2nd external Pt100 sensor connection not available accessory accessory Integrated programmer 8x60 steps 8x60 steps 8x60 steps Temperature control ICC ICC ICC Absolute temperature calibration 3 Point Calibration 3 Point Calibration 3 Point Calibration Temperature display 5.7" TFT Touchscreen 5.7" TFT Touchscreen 5.7" TFT Touchscreen Temperature setting Touchscreen Touchscreen Touchscreen Cooling Water Connection N/A N/A G¾ in. Cooling water temperature max. N/A N/A 40 °C 1.0Cooling water consumption N/A N/A 1 l/min Cooling water difference pressure N/A N/A 7.3 bar