Abbreviation Meaning in this document
MPT Pirani/Cold cathode transmitter
PCR Pirani/Capacitive transmitter
PKR Pirani/Cold cathode transmitter
PPT Pirani transmitter
[P:xxx] Electronic drive unit control parameters. Printed in bold as three-digit number in
square brackets. Frequently displayed in conjunction with a short description.
Example: [P:312] software version
RS-485 Standard for a physical interface for asynchronous serial data transmission (Recom-
mended Standard)
RPT Piezo/Pirani transmitter RP
S1 Switch on power supply pack
T Temperature (in °C)
TC Turbopump electronic drive unit (turbo controller)
TPR Pirani transmitter
TPS Power supply pack, voltage supply (turbo power supply)
X3 Connecting socket for a Pfeiffer Vacuum transmitter
Tbl. 2: Abbreviations used in this document
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