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Teledyne API M100E Analyzer Operation Manual Operating Instructions
93
6.8. SETUP – VARS: USING THE INTERNAL VARIABLES
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 6-7 lists all variables that are available with
in the 818 pa
ssword protected level.
Table 6-7: Variable Names (VARS)
NO.
VARIABLE
DESCRIPTION ALLOWED VALUES
0
iDAS _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. iDAS _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 (refer to Section 11.7.3).
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
(refer to Section 11.1.1).
Do not adjust this setting unless under the direction of Teledyne
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 (refer to Section 5.7.2).
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 (refer to Chapter 8).
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 (refer to Chapter 8).
Note that the DYN_ZERO and DYN_SPAN features are not
allo
wed 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
04515F DCN6048