YOKOGAWA ZR202S, User Manual, Page: 114 / 163

<10. Other Functions>
10-7
IM 11M13A01-04E
21.0 p1 0.51
81.92
ez
e1
es
0
C
A B
Zero correction ratio = (B/A) x 100 (%) Correctable range: 100 ± 30%
Span correction ratio = (C/A) x 100 (%) Correctable range: 0 ± 18%
Cell
electromotive
force, mV
Calibration curve
before correction
Previous
zero gas data
Corrected calibration curve
(theoretical calibration curve)
Zero origin
Span origin
Span gas concentration
Oxygen concentration (vol%O
2
)
F10-2E.ai
Figure 10.2 Span gas and Zero gas Correction Ratios
10.1.18 History of Calibration Time
The calibration-conducted dates and times for the past ten calibrations are stored in memory.
10.1.19 Time
The current date and time are displayed. These are backed up by built-in batteries, so no adjustment
is required after the power is switched off. The following shows an example of displaying June 21,
2000, 3:06 p.m.
Displayed alternately
00.06.21
15.06
F10-3E.ai
Figure 10.3 Date-and-time Display
10.1.20 Software Revision
The revision (number) of the software installed is displayed.