Teledyne 100E - Setup - Internal Variables (VARS); Table 6-5: Variable Names (VARS) Revision B.3

Model 100E Instruction Manual Operating Instructions
045150102 Rev XB1 71
6.6. Setup - Internal Variables (VARS)
The M100E 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 re-defined using the VARS menu. Table 6-5
lists all variables that are available within the 818 password protected level.
Table 6-5: Variable Names (VARS) Revision B.3
No. Variable Description Allowed Values
0 DAS_HOLD_OFF
Changes the internal data acquisition system (iDAS)
hold-off time, which is the duration when data are
not stored in the iDAS because the software
considers the data to be questionable. That is the
case during warm-up or just after the instrument
returns from one of its calibration modes to SAMPLE
mode. DAS_HOLD_OFF can be disabled entirely in
each iDAS channel.
Can be between 0.5
and 20 minutes
Default=15 min.
1 TPC_ENABLE
Enables or disables the temperature and pressure
compensation (TPC) feature (Section 10.7.3).
ON/OFF
2 RCELL_SET
Sets the sample chamber temperature. Increasing or
decreasing this temperature will increase or decrease
the rate at which SO
2
* decays into SO
2
.(Section
10.1.1).
Do not adjust this setting unless under the direction
of T-API customer service personnel.
30º C - 70º C
Default= 50º C
3 IZS_SET
Sets the IZS option temperature. Increasing or
decreasing this temperature will increase or decrease
the permeation rate of the IZS source (Section
5.4.2).
30º C - 70º C
Default= 50º C
4 DYN_ZERO
Dynamic zero automatically adjusts offset and slope
of the SO
2
response when performing a zero point
calibration during an AutoCal (Chapter 7).
ON/OFF
5 DYN_SPAN
Dynamic span automatically adjusts slope and slope
of the SO
2
response when performing a zero point
calibration during an AutoCal (Chapter 7).
Note that the DYN_ZERO and DYN_SPAN features
are not allowed for applications requiring EPA
equivalency.
ON/OFF
6 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
Default=AUTO
7 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