Teledyne gfc 7000ta operation manual Warm Up, Front Panel Display During System Warm-Up

Getting Started Model GFC7000TA Carbon Dioxide Analyzer

3.7.2. Warm Up

During the warm-up period various portions of the instrument’s front panel may behave as indicated in Table 3-8.

Table 3-8: Front Panel Display During System Warm-Up

NAME	COLOR	BEHAVIOR	SIGNIFICANCE
		Displays current,	This is normal operation, but deemed inaccurate during the
Conc field	N/A	compensated CO2
			warm-up period.
		Concentration
		Displays current	Instrument is in Sample mode but is still in the process of
Mode field	N/A	mode, e.g.,
			warming up. (DAS holdoff period is active)
		SAMPLE”
Param field	N/A	Displays menu items	Refer to Table 3-9 for a list and descriptions of warning
		and messages.	messages.
STATUS LEDs
			Unit is operating in sample mode; front panel display is
Sample	Green	On	being updated.
			Flashes On/Off when adaptive filter is active
Cal	Yellow	Off	The instrument’s calibration is not enabled.
			The analyzer is warming up and hence out of specification
Fault	Red	Blinking	for a fault-free reading. Various warning messages appear
			in the Param field.

3.7.3. Warning Messages

Because internal temperatures and other conditions may be outside be 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 30 minutes warm up period is over, investigate their cause using the troubleshooting guidelines in Section 11 of this manual.

To view and clear warning messages, press:

TEST deactivates warning

messages

NOTE:

If the warning message persists after several attempts to clear it, the message may indicate a real problem and not an artifact of the warm-up period

SAMPLE	HVPS WARNING			CO2 = 0.00
TEST	CAL		MSG	CLR	SETUP
SAMPLE				CO2 = 0.00
		RANGE=500.000 PPM
< TST TST > CAL			MSG	CLR	SETUP
SAMPLE				CO2 = 0.00
		HVPS WARNING
TEST	CAL		MSG	CLR	SETUP

Make sure warning messages are

not due to real problems.

MSG activates warning

messages.

<TST TST> keys replaced with

TEST key

Press CLR to clear the current

message.

If more than one warning is active, the

next message will take its place

Once the last warning has been cleared, the analyzer returns to SAMPLE mode

Table 3-6 lists brief descriptions of the warning messages that may occur during start up.

Teledyne Analytical Instruments 34