INFICON Composer Elite Gas Concentration Monitor - Manual (Page 51)

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Composer Elite Operating Manual
Pressing Advanced Data displays acoustic information when a cell is attached.
This information displayed includes:
Frequency . . . . . . . . . . . . . . . . . Acoustic cell frequency.
Amplitude . . . . . . . . . . . . . . . . . Signal amplitude [Volts RMS] of the
measured frequency.
R2 . . . . . . . . . . . . . . . . . . . . . . . . Coefficient of Determination - Lorentzian
curve's "goodness of fit" (0<=R2<=1 where
1 is perfect curve fit).
Q. . . . . . . . . . . . . . . . . . . . . . . . . Resonant frequency's Quality Factor or
Q factor.
Error. . . . . . . . . . . . . . . . . . . . . . Lorentzian curve fit's Standard Error from
Acoustic Cell resonance points.
RAV . . . . . . . . . . . . . . . . . . . . . . Root Allen Variance frequency calculated
from 201 measurements.
PWM1. . . . . . . . . . . . . . . . . . . . . Power (Duty Cycle %) applied to cell heater.
PWM2. . . . . . . . . . . . . . . . . . . . . Power (Duty Cycle %) applied to (internal)
inlet tube heater.
Mode . . . . . . . . . . . . . . . . . . . . . Displays the sensor card’s current
measurement mode. Modes include Ready,
Baseline, Search, Track, and QTrack. See
Table 3-1 for descriptions of these modes.
Values for concentration will not be displayed
while in Ready, Baseline or Search mode.
On the Sensor screen, pressing Overview displays the Overview screen,
see
section 3.3.2.3 .
To view the Sensor Parameters screen for the sensor, press Parameters.
There is no direct way of moving from one Sensor screen to another. For example,
to go from Sensor 1 to Sensor 2, exit to the Overview screen
and select Sensor 2 Data.