1.8 STP pump specification
The external appearances, installation and unpacking ways are different depending on the STP
pump model. Refer to the following:
Naming convention:
• "C" following a pump model name indicates a corrosion resistant
*1
type.
(e.g. STP-iXA4507C)
• "B" following a pump model name indicates corrosion resistant
*1
and high-emissivity coating
*2
type.
(e.g. STP-iXA4507B)
• "V" indicates a TMS
*3
unit.
(e.g. STP-iXA4507CV)
• “(n)” of the trailing number indicates TMS temperature
*4
(e.g. STP-iXA4507CV3)
*1 Corrosion-resistant: STP pump with anti-corrosive treatment.
*2 High-emissivity coating: STP pump with rotor covered with high-emissivity coating.
*3 Temperature Management System: TMS maintains the temperature of the turbomolecular pump with the thermistor in the
base of the turbomolecular pump and operates the TMS heater ON/OFF control to maintain a constant temperature of the
STP pump.
*4 Refer to Section 2.2 for TMS temperature.
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