Yokogawa Single Channel Oxygen Analyzer System ZR22/ZR402 - Manual (Page 149)

IM 11M12A01-03E 10-1
10. Other Functions
10. Other Functions
10.1 Display
10.1.1 Detailed Display
Press the Detailed-data key on the basic panel display to display the detailed operation
data as shown in Figure 10.1.
Pressing the
᭢ or ᭡ key, you can advance the page or go back to your desired page.
• Detailed-data display
There are ten panel displays for viewing detailed data. The following briefly describe the
operational data displayed on the detailed-data display.
Span gas ratio: 0 . 0 %
Zero gas ratio 1 0 0 . 0 %
Response time: 0 s
Cell robustness: life> 1year
Cell temperature: 750
Њ C
C.J.temperature: 47 Њ C
Tag:
Hold
F10.1E.EPS
Figure 10.1 Detailed-data Display
10.1.1.1 Span-gas and Zero-gas Correction Ratios
These are used to check for degradation of the sensor (cell). If the correction ratio is
beyond the limits as shown in Figure 10.2, the sensor should no longer be used.
These ratios can be found by calculating the data as shown below.
21.0 p1 0.51
81.92
ez
e1
es
0
C
A B
Zero-gas ratio = (B/A) x 100 (%) Correctable range: 100
±
30%
Span-gas 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.EPS
Figure 10.2