User guide

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PN 074-566-P1B
Composer Elite Operating Manual
2.1.1.2 Pressure and Tubing Size
The Composer Elite System is designed to operate with the gases in the Reactor's
process tubing at a pressure of 26.66 to 133.3 kPa (200 to 1000 Torr). The inner
diameter of the inlet and outlet tubes on the Standard and High Flow Acoustic
Sensors were designed to optimize performance at low pressures; however, the
Reactor’s process tubing may be of any appropriate size without degrading
Composer Elite performance.
2.1.1.3 Heated Process Tubing and Acoustic Sensor Temperatures
Operation of the Acoustic Sensor at a temperature slightly higher than the process
gas tubing will help prevent material from condensing inside the acoustic sensor.
INFICON recommends the following temperature settings:
 The Temperature Setpoint 1 setting for the Acoustic Sensor's resonant
chamber temperature should be 5°C or more above ambient temperature.
See section 3.3.2.7, Sensor Parameters Screen, on page 3-12.
 The Temperature Setpoint 2 setting for the Acoustic Sensor's inlet tube
temperature should be above the Temperature Setpoint 1 setting. Typically
start out with this temperature three degrees above Temperature Setpoint 1.
The inlet tube heater is designed to minimize zero point offset caused by large
flow rate changes. The optimal setting will depend on process conditions.
See section 3.3.2.7, Sensor Parameters Screen, on page 3-12.