OptistatAC-V12 Optistat AC-V14
Cooling Technology
PTR
Temperature range 2.8 - 325 K
Temperature stability ± 0.5 K
Typical cool down time

90 minutes to 4 K at 60 Hz

120 minutes to 4 K at 50 Hz

60 minutes to 4 K at 60 Hz

Typical cooling power 0.25 W @ 4.2 K
10 W @ 65 K
0.5 W @ 4.2 K
25 W @ 65 K
f number with standard windows 2.4  
Compressor adsorber service interval >20,000 hours  
Power consumption - air cooled compressor 3.5 kW 5.3 kW
Power consumption - water cooled compressor 3.3 kW 4.8 kW
Mains power requirements 200*, 208/230 VAC, 1
phase, 60 Hz
200*, 220/230 or 460 VAC,3
phase, 50 Hz
Water flow rate - water cooled compressor only 3 litres/minute 6 litres/minute

* using a transformer, provided for the OptistatAC-V12