procurement of turbo molecular pump with rack controller , turbomolecular pump with rack controller : , 1. pumping speed for nitrogen: 550 l/s or better 2. pumping speed for helium: 570 l/s or better 3. pumping speed for hydrogen: 500 l/s or better 4. rotation speed: about 42000 rpm 5. base pressure with dry backing pump: 1 x 10^-10 mbar or better 6. inlet flange: cff 8 inch 7. outlet flange: kf 25 8. bake out temperature: 120 deg c at the pumps inlet flange. 9. cooling mode: air cooling and water cooling. 10. in case of air cooling, connecting cable length should be 5 meters long. 11. in case of water cooling, hose connectors should be provided. 12. venting kit with connecting cable length of 5 meters long. 13. splinter shield and one heater band with power mains of 230 volts/50 hz 14. controller: rack mounted 15. the connecting cable of tmp controller to the pump should be 5 meters long 16. display parameters: rpm, power, current, temperature, etc. 17. operating voltage: 230 volts ac, 50 hz