Calibration quality – Teledyne 6200E - Sulfides Analyzer User Manual
Page 177

Model 6200E Instruction Manual
Calibration Procedures
M6200E Rev: A1
177
If the instrument is in multigas measurement mode and the SNGL reporting range mode is
selected, the AutoCal sequence is programmed as described above. If the reporting range of the
M6200E must is set for either IND or AUTO. the gas type and range to be measured must be
specified. This parameter appears at the end of the programming sequences after the
CALIBRATE: ON/OFF parameter is set. For example:
SETUP X.X
GAS-RANGE: H2S-HIGH
<SET
EDIT
EXIT
SETUP X.X
CALIBRATE: ON
<SET
SET>
EDIT
EXIT
Follow standard AutoCal programming process to this
point, then …
SETUP X.X
GAS TO CAL: H2S
SO2
H2S
ENT
R EXIT
SETUP X.X
Gas TO CAL: SO2
LOW HIGH
ENTR
EXIT
EXIT returns
to the SETUP
Menu
SETUP X.X
SEQ 2) ZERO–SPAN, 2:00:30
PREV NEXT
MODE
SET
EXIT
Sequence
Delta Time
MODE Delta Days
SETUP X.X
RANGE TO CAL: LOW
LOW
HIGH
ENT
R EXIT
SETUP X.X
RANGE TO CAL: HIGH
LOW HIGH
ENTR
EXIT
SETUP X.X
GAS-RANGE: SO2-LOW
<SET
EDIT
EXIT
7.10. Calibration Quality
After completing one of the calibration procedures described above, it is important to evaluate the
analyzer’s calibration slope and offset parameters. These values describe the linear response curve
of the analyzer. The values for these terms, both individually and relative to each other, indicate
the quality of the calibration. To perform this quality evaluation, you will need to record the values
of both test functions (Section 6.2.1 or Appendix A-3), all of which are automatically stored in the
iDAS channel CALDAT for data analysis, documentation and archival.
Make sure that these parameters are within the limits listed in Table 7-5.
Table 7-5: Calibration Data Quality Evaluation
FUNCTION
MINIMUM VALUE
OPTIMUM VALUE
MAXIMUM VALUE
H2S SLOPE
1
-0.700 1.000 1.300
H2S OFFS
1
50.0 mV
n/a
250.0 mV
These values should not be significantly different from the values recorded on the Teledyne
Analytical Instruments Final Test and Validation Data sheet that was shipped with your instrument.
If they are, refer to the troubleshooting Chapter 11.
1
Shown as they appear when analyzer is in H2S mode. In SO2 mode they appear as
SO2 OFFS
&
SO2 SLOPE. In multigas mode, both version are listed and should be checked,