Teledyne 6200E - Sulfides Analyzer - Manual (Page 78)

Operating Instructions Model 6200E Instruction Manual
78 M6200E Rev: A1
6.8. SETUP – VARS: Using the Internal Variables
The M6200E 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 6-6 lists all variables that are available within the
818 password protected level.
Table 6-6: Variable Names (VARS) Revision A.1
NO. VARIABLE DESCRIPTION
ALLOWED
VALUES
0 MEASURE_MODE
Selects the gas measurement mode in which the instrument
is to operate. SO
2
only, H
2
S only or dual gas measurement
of SO
2
and H
2
S simultaneously. Dual gas mode requires
that a special switching optional be installed (see Section
5.5 and 6.8.1).
SO
2
;
SO
2
– H
2
S;
H
2
S
1 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.
2 TPC_ENABLE
Enables or disables the temperature and pressure
compensation (TPC) feature.
ON/OFF
3 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 10.1.2).
Do not adjust this setting unless under the direction of
Teledyne Analytical Instruments customer service
personnel.
30º C - 70º C
Default= 50º C
4 IZS_SET
Sets the IZS option temperature. Increasing or decreasing
this temperature will increase or decrease the permeation
rate of the IZS source (Section 5.4.3).
30º C - 70º C
Default= 50º C
5 DYN_ZERO
Dynamic zero automatically adjusts offset and slope of the
H
2
S response when performing a zero point calibration
during an AutoCal (Chapter 7).
ON/OFF
6 DYN_SPAN
Dynamic span automatically adjusts slope and slope of the
H
2
S 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
7 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
8 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