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Getting Started Model GFC7001E Carbon Dioxide Analyzer
Teledyne Analytical Instruments 48
3.5.2. WARM UP
The GFC 7001E/EM requires about 60 minutes warm-up time before reliable CO measurements can be taken.
During that time, various portions of the instrument’s front panel will behave as shown in Table 3-8. See Figure
3-1 for the layout.
Table 3-8: Front Panel Display during System Warm-Up
NAME COLOR BEHAVIOR SIGNIFICANCE
Concentration
Field
N/A
Displays current,
compensated CO
Concentration
This is normal operation.
Mode Field N/A
Displays blinking
“SAMPLE”
Instrument is in sample mode but is still in the process of
warming up. (iDAS holdoff period is active)
STATUS LED’s
Sample Green On
Unit is operating in sample mode; front panel display is being
updated.
Flashes On/Off when adaptive filter is active
Cal Yellow Off The instrument’s calibration is not enabled.
Fault Red Blinking
The analyzer is warming up and hence out of specification
for a fault-free reading. Various warning messages will
appear.
3.5.3. WARNING MESSAGES
Because internal temperatures and other conditions may be outside the specified limits during the analyzer’s
warm-up period, the software will suppress most warning conditions for 30 minutes after power up. If warning
messages persist after the 60 minutes warm-up period is over, investigate their cause using the troubleshooting
guidelines in Section Error! Reference source not found..
To view and clear warning messages, press:
Table 3-6 lists brief descriptions of the warning messages that may occur during start up.