User guide

8 - 4
PN 074-566-P1B
Composer Elite Operating Manual
Concentration is noisy Acoustically noisy
environment.
Noisy Concentration. Locate Acoustic Sensor
farther from acoustic noise
source or reduce acoustic
noise
Electrically noisy
environment.
Noisy Concentration. Locate Acoustic Sensor
and Interconnect cable
farther from electrical
noise source
Electronics failure or
Interconnect cable failure.
Noisy Concentration. Exchange Interconnect
cable. If symptom persists,
contact INFICON.
Maximum flow rate
Exceeded or unstable.
Noisy Concentration. Reduce flow rate to within
specification (refer to
section 1.5.1,
Composer Elite System
Operating Specifications,
on page 1-8).
Sensor Control Unit and/or
Acoustic Sensor not
properly grounded.
Noisy Concentration. Check Sensor Control Unit
and Acoustic Sensor
grounding (refer to section
2.1.2, Grounding and
Shielding, on page 2-3).
Concentration is noisy at
low pressure.
Electronics failure. Noisy Concentration. Contact INFICON.
Frequency display freezes
the value.
System pressure outside
of specified pressure
range for Acoustic Sensor.
Invalid Concentration. Change Acoustic Sensor
operating pressure (refer
to section 1.5.1,
Composer Elite System
Operating Specifications,
on page 1-8).
LCD display is dark. Loss of power to Sensor
Control Unit or electronics
failure.
N/A. Verify power switch is ON.
Verify Mains power is
present. Exchange
external power supply. If
symptom persists, contact
INFICON.
Leak Test Procedure for
primary chamber indicates
a small leak (refer to
section 7.2.1, Leak
Testing the Primary
(Resonant) Chamber, on
page 7-1.
Diaphragm has small leak. Concentration offset. Contact INFICON.
Table 8-1 FMEA (continued)
Symptom Possible Cause Effect on Concentration
Accuracy
Remedy