Teledyne GFC-7001T - Trace CO Analyzer - Manual (Page 111)

SetupTeledyne API – Model T300/T300M CO Analyzer
Teledyne Analytical Instruments 111
5.8. SETUP VARS: VARIABLES SETUP AND DEFINITION
The GFC7001T/GFC7001TM has several user-adjustable software variables, which
define certain operational parameters. Usually, these variables are automatically set by
the instrument’s firmware, but can be manually redefined using the VARS menu.
The following table lists all variables that are available within the 818 password
protected level. See Appendix A-2 for a detailed listing of all of the GFC7001T/
GFC7001TM variables that are accessible through the remote interface.
Table 5-3: Variable Names (VARS)
NO. VARIABLE DESCRIPTION
ALLOWED
VALUES
VARS
DEFAULT
VALUES
0 DAS_HOLD_OFF
Changes the Internal Data Acquisition System (DAS)
HOLDOFF timer (Section 7.1.11).
No data is stored in the DAS channels during situations
when the software considers the data to be questionable
such as during warm up of just after the instrument returns
from one of its calibration mode to SAMPLE Mode.
May be set for
intervals
between
0.5 – 20 min
15 min.
1 CONC_PRECISION
Allows the user to set the number of significant digits to the
right of the decimal point display of concentration and stability
values.
AUTO, 1, 2,
3, 4
AUTO
2 DYN_ZERO 1
Dynamic zero automatically adjusts offset and slope of the
CO response when performing a zero point calibration during
an AutoCal (see Section 9.4).
ON/OFF OFF
3 DYN_SPAN 1
Dynamic span automatically adjusts the offsets and slopes of
the CO response when performing a slope calibration during
an AutoCal (see Section 9.4).
ON/OFF OFF
4 CLOCK_ADJ
Adjusts the speed of the analyzer’s clock. Choose the +
sign if the clock is too slow, choose the - sign if the clock is
too fast.
-60 to +60
s/day
0 sec
5 STABIL_GAS 2
Selects which gas measurement is displayed when the STABIL
test function is selected.
CO; CO
2
& O
2
CO
1
Use of the DYN_ZERO and DYN_SPAN features are not allowed for applications requiring EPA equivalency.
2 This VARS only appears if either the optional O
2
or CO
2
sensors are installed.
I MPORTANT I MPACT ON R EADINGS OR D ATA
There are more VARS available when using the password, 929, for
configuration. Use caution when pressing any buttons while in this setup.
Any changes made may alter the performance of the instrument or cause
the instrument to not function properly. Note that if there is an accidental
change to a setup parameter, press EXIT to discard the changes.