A turbomolecular pump (TMP) is a multi-stage axial‑flow turbine in which high speed rotating blades provide compression by increasing the probability of gas molecules moving in the pumping direction. The turbomolecular pump is optimised for molecular flow conditions and requires a suitably sized two stage rotary vane pump or an oil free scroll pump to exhaust to atmosphere. A compound molecular pump (CMP) is based on the concept of combining bladed turbomolecular stages with molecular drag stages on the same rotor. This design allows: • High critical foreline pressures (typically up to 10 mbar) • Options to use smaller backing pumps or dry diaphragm backing pumps
Turbo Stations
Our range of turbopumping stations build on our previous generation, with a simplified ordering matrix and expanded range to include turbopumps with speeds from 47l/s to 400 l/s. Our small turbo station is our entry level compact station for speeds ranging 47 to 84 l/s, incorporating our trusted nEXT85, a choice of wet and dry backing pumps and simple plug and play turbo and instrument control. Our larger station offers a range of pumping speeds between 47 and 400 l/s, with our trusted and reliable nEXT turbo pumps, a choice of wet and dry pumps with the possibility to incorporate the unique nXDS scroll pump, and additional flexibility with many more control and communication options thanks to the fully featured TIC controller.
