User guide

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PN 074-566-P1B
Composer Elite Operating Manual
control knob to change the value for that digit. To save the changes, press Save.
To cancel changes, press Cancel. See Figure 3-2 for an example of screen layout
while editing parameters.
Figure 3-2 Editing parameters
3.2 Calibration
Calibration obtains the exact frequency (speed of sound) for the carrier gas (or one
component of a mixture) for specific Composer Elite System operating conditions.
Calibration determines Reference Zero.
For many applications, Factory Zero is sufficient to provide the needed levels of
accuracy and reproducibility. Refer to section 4.1.3, How is Performance Affected
if I Use the Factory (Reference) Zero Value?, on page 4-2.
3.2.1 Frequency of Calibration
Applications requiring the highest degree of reproducibility should be calibrated
daily. Experience will determine if less frequent calibrations are appropriate. See:
 When and How Often to Set the Reference Zero, section 4.1.2 on page 4-1
 How is Performance Affected if I Use the Factory (Reference) Zero Value?,
section 4.1.3 on page 4-2
 What Happens if the Reference Zero is Improperly Set?, section 4.1.10 on
page 4-8