Characteristic Data From A Sensor Measured During Calibration - YOKOGAWA ZR22G User Manual

81.92
ez
e2
Calibration curve
before correction
Cell
electromotive
force, mV
e1
es
C
0
21.0
Zero-point correction ratio = (B/A) x 100 (%) Correctable range: 100 ± 30%
Span correction ratio = (C/A) x 100 (%)
Figure 9.5
Figure 9.6 shows a one-point calibration using only a span gas. In this case, only the cell
electromotive force for a span gas with oxygen concentration p1 is measured. The cell
electromotive force for the zero gas is carried over from a previous measurement to obtain the
calibration curve. The principle of calibration using only a span gas also applies to the one-point
calibration method using a zero gas only.
81.92
ez
Cell
electromotive
Calibration curve before
force, mV
correction
e1
es
C
0
21.0
Zero point correction ratio = (B/A) x 100 (%) Correctable range: 100 ± 30%
Span correction ratio = (C/A) x 100 (%)
Figure 9.6
9.1.5 Characteristic Data from a Sensor Measured During
Calibration
In addition to calibration data, the following data is collected during calibration to determine the
status of the sensors. However, if calibration is not performed correctly (e.g. semi-automatic
calibration, an error occurs when it is automatic calibration), these data in this calibration will
not be collected. These data can be viewed in the log information in converter menu and in the
detailed display in sensor menu. For instructions and instructions on how to operate the data,
refer to Section "10.1
(1) History of Span Point Correction Rate
The value up to the last 20 times is memorized.
(2) History of zero point correction rate
The value up to the last 20 times is memorized
Corrected calibration
curve (theoretical
calibration curve)
p1
Zero gas concentration
Span gas concentration
Oxygen concentration (vol%O
Correctable range: 0 ± 18%
Calculation of a Two-point Calibration Curve and Correction Ratios using Zero and
Span Gases
Previous
zero gas data
Corrected calibration curve
(theoretical calibration curve)
p1
Span gas concentration
Oxygen concentration (vol%O
Correctable range: 0 ± 18%
Calculation of a One-point Calibration Curve and Correction Ratios using a Span Gas
Detailed-data Display" and "10.2
Zero origin
B A
Span origin
p2 0.51
)
2
F9.2E.ai
Zero origin
B A
Span origin
0.51
)
2
F9.3E.ai
<9. Calibration>
Converter Detail".
IM 11M12G01-02EN 1sh Edition : Mar. 25, 2021-00
9-5