Pump Used In Presence Of Magnetic Fields; Accessories And Spare Parts - Agilent Technologies TV 401 NSF Bedienungshandbuch

Pump Used in Presence of Magnetic Fields

Magnetic fields induce eddy currents in the rotor of a turbomolecular
pump that tend to oppose to its rotation. The result is increased
electrical power consumption by the motor, most of which is
dissipated in the rotor.
Since the rotor is not in contact with the stator the above power can
leave the rotor mainly by radiation and hence the rotor may be
overheated while static parts of the pump remain cool. This effect is
strongly dependant from the intensity, time function and distribution
of the magnetic field. In general, therefore, an increase in pump
power can be expected.
If this increase is lower than 50 % of the power value drawn by the
motor in high vacuum operation, no particular problem should be
expected. However if the effect is grater, than the case should be
carefully reviewed by Agilent's specialist.

Accessories and Spare Parts

Tab. 8
DESCRIPTION
Mains cable NEMA Plug, 3m long
Mains cable European Plug, 3m long
Serial cable and Navigator Software
Water cooling kit
Plastic water cooling kit
Purge valve with KF16 flange
Purge valve with 7/16" flange
Purge valve KF16-M12 20 SCCM
Purge valve 7/16-M12 20 SCCM
Forepump DS 302, with 1 ph., universal motor
Forepump SH 110, 220/120 V
TV 401/301/21 NSF User Manual / 87-900-995-01 (C)

Pump Used in Presence of Magnetic Fields

Accessories and spare parts

Technical Information
PART NUMBER
969-9958
969-9957
969-9883
969-9337
969-9347
969-9239
969-9240
969-9241
969-9242
949-9325
SH01101UNIV
287/294
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