Specifications

Appendix C
SRS Residual Gas Analyzer
3
What is the PPM100 controller?
Figure 1. Front panel of the PPM100 controller with its touchscreen/LCD
display and RGA control buttons.
The PPM100 Partial Pressure Monitor is a standalone, fully-programmable, microprocessor-based
vacuum system controller that when connected to any SRS RGA100/200/300 residual gas analyzer can
continuously monitor and display partial pressures of up to eight individual gas components. It includes
a touchscreen/LCD front-panel display, pressure vs. time and analog-scan graphing, built-in relays for
vacuum system control and several multipurpose (analog and digital) I/O ports. RS-232, USB and GPIB
computer interfaces are standard in all controllers. An Embedded Web Server (EWS), with a standard
Ethernet connector, connects the PPM100 to the World Wide Web.