nEXT400D
The nEXT400D is a hybrid bearing compound turbo pump available with either an ISO160 or a CF160 inlet flange and has a N2 pumping speed of 400ls-1. nEXT pumps combine our proven bearing technology (oil lubricated ceramic lower bearing with dry permanent magnetic upper bearing), an improved rotor design with a new molecular drag stage to deliver improved pumping speed and compression ratios, and true user serviceability. They feature 24V to 48Vd.c. sensor less motors with a built in drive that is fully compatible our range of TAG and TIC controllers. They are available pre-set for 80W or 160W maximum power, the former enabling use with our 100W TIC controllers are also recommended for pumping Argon, but with a longer ramp time to full operating speed.
A basic pump system would require an nEXT400D pump, a TAG or TIC controller, either an air or water cooling accessory and a suitable backing pump.
Features and Benefits
- State-of-the-art rotor design enhances performance to deliver exceptional pumping speeds and compression ratios
- Fully end user serviceable in minimum time without complex tooling or major disassembly...you can do it!
- Compact design with high performance for efficient systemisation
- Compatible with Edwards TIC turbo and instrument controllers meaning you can add up to 3 vacuum gauges without the need of an additional gauge controller
- RoHS compliant and CSA/UL approved
| Inlet flange | DN160ISO-K, DN160CF |
| Outlet flange | DN25NW |
| Pumping speed | |
| N2 | 400 ls-1 |
| He | 390 ls-1 |
| H2 | 325 ls-1 |
| Compression ratio | |
| N2 | >1 × 1011 |
| He | 1 x 108 |
| H2 | 5 x 105 |
| Ultimate pressure with RV backing pump ISO/CF | <1 x 10-8 / <1 x 10-10 mbar |
| Recommended backing pump* | RV12/nXDS10i |
| Vent port | 1/8 inch BSP female |
| Purge port | 1/8 inch BSP female |
| Max continuous inlet flow (Nitrogen)† | |
| Water cooling (water at 15°C, ambient temp at 40°C) | 105 sccm |
| Forced air cooled, 35 °C ambient | 90 sccm |
| Pump rotational speed | |
| Nominal rotational speed | 60000 rpm |
| Standby rotational speed | Variable from 33000 to 60000 rpm (42000 rpm default) |
| Programmable power limit settings | Variable from 50-200W (160W default) |
| Start time to 90% speed | 180s‡ |
| Analogue outputs | Pump rotational speed; Power consumption; Pump temp; Controller temp |
| Cooling method# | Forced air / water |
| Ambient air temp for forced air cooling | 5 - 35°C |
| Min cooling water flow rate (water 15°C) | 15 l h-1 |
| Water temp range | 10 - 20°C |
| Max inlet flange temp | 70°C |
| Operating attitude | Vertical and upright, through to Horizontal +/- 2° |
| Noise level at 1 metre | <45 dB(A) |
| Max magnetic field pump can tolerate | 5 mT |
| Recommended controller | TIC200 turbo and instrument controller |
| Quiescent electrical power | Typically 20 W |
* A smaller backing pump may be used depending on application. A suitable diaphragm pump with ultimate <5 mbar may also be used e.g. XDD1.
† Above this inlet pressure, rotational speed drops to below nominal.
‡ Power limit set to 160 W.
# Air and water cooling accessories must be ordered separately