Teledyne API – T101 Operation Manual Operating Instructions
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4.5. SETUP – VARS: USING THE INTERNAL VARIABLES
The T101 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 Table 4-7 lists variables that
are available within the 818 password protected level.
Table 4-7. Variable Names (VARS)
NO. VARIABLE DESCRIPTION ALLOWED
VALUES
0 MEASURE_MODE
Selects the gas measurement mode in which the instrument
is to operate. SO2 only, H2S only or dual gas measurement
of SO2 and H2S simultaneously. Dual gas mode requires
that a special switching option be installed (see Sections
4.5.1 and 10.3.2).
SO2;
SO2 – H2S;
H2S
1 CAL_GAS
Used to select the calibration gas (SO2 or H2S) or to select
default behavior (DEF) where valve position and slope-
offset are same.
DEF, SO2 , H2S
2 DAS_HOLD_OFF
Changes the internal data acquisition system (DAS ) hold-
off time, which is the duration when data are not stored in
the DAS 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 DAS channel.
Can be between 0.5
and 20 minutes
Default=15 min.
3 TPC_ENABLE
Enables or disables the temperature and pressure
compensation (TPC) feature. ON/OFF
4 RCELL_SET
Sets the sample chamber temperature. Increasing or
decreasing this temperature will increase or decrease the
rate at which SO2* decays into SO2. (Section 10.1.2).
Do not adjust this setting unless under the direction of
Teledyne API’s Technical Support personnel.
30º C - 70º C
Default= 50º C
5 IZS_SET
Sets the IZS option temperature. Increasing or decreasing
this temperature will increase or decrease the permeation
rate of the IZS source.
30º C - 70º C
Default= 50º C
6 DYN_ZERO
Dynamic zero automatically adjusts offset and slope of the
H2S response when performing a zero point calibration
during an AutoCal (Section 6).
ON/OFF
7 DYN_SPAN
Dynamic span automatically adjusts slope and slope of the
H2S response when performing a zero point calibration
during an AutoCal (Section 6).
Note that the DYN_ZERO and DYN_SPAN features are not
allowed for applications requiring EPA equivalency.
ON/OFF
8 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
9 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
10 SERVICE_CLEAR Resets the service interval timer. OFF/ON
07266B DCN6485