INFICON Composer Gas Concentration Controller - Manual (Page 19)

1 - 1
IP
N 07
4-
28
9L
Composer Operating Manual
Chapter 1
Getting Started
1.1 Introduction
The Composer system is designed to measure and generate signals
appropriate for the measurement and control of the composition of binary
gasses. It is optimized for operation at pressures as low as 70 Torr
(9.33 kPa) and with supply line temperatures as high as 65 °C. It has
unsurpassed precision and reproducibility when measuring small
concentrations of heavy molecular weight components in a low molecular
weight carrier gas.
1.1.1 Description of the Instrument System
The Composer system consists of: two main hardware components, and an
Interconnecting Cable. The hardware components are: (see
Figure 1-1 .)
Š a Transducer module which interfaces to the Reactor’s gas supply line and
forms the physical basis for the speed of sound measurement.
Š an electronic Controller module which provides the electrical signals to the
Transducer that are necessary to determine the speed of sound, provides
either an LCD or LEDs for user status information, provides outputs for real
time analog and digital concentration information, and feedback control for
either concentration or bulk flow control.
Figure 1-1 Transducer and Controller
Transducer
Controller
Controller with LCD Display Option