Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 99)

IM 11M12A01-05E 8-2
8.1.1 Minimum and Maximum Settings Corresponding to 4 mA and 20 mA
Set the output items for oxygen concentration reading, humidity reading and mixing
ratio corresponding to 4 mA and 20 mA. When the oxygen concentration was selected
with parameter code C01, use parameter codes C11 and C12 for the minimum and
maximum settings; when the humidity setting was selected with parameter code C01,
use parameter codes C13 and C14 for those settings; and when the mix ratio setting was
selected with parameter code C01, use parameter codes C15 and C16 for those settings.
Oxygen concentration setting range
The minimum concentration of oxygen for the minimum current (4 mA) is 0% O
2
or 6%
to 76% O
2
. The maximum concentration of oxygen for the maximum current (20 mA)
ranges from 5% to 100% O
2
, and must be at least 1.3 times the concentration of oxygen
set for the minimum.
Setting example 1
If the setting (for a 4 mA current) is 10% O
2
, you must set the oxygen concentration for
the maximum (20 mA) point at more than 13% O
2
.
Setting example 2
If the setting (for a 4 mA current) is 75% O
2
, you must set the oxygen concentration for
the maximum (20 mA) point at 98% O
2
or greater, (75 3 1.3% O
2
). (Numbers after the
decimal point are rounded up.)
5
15
25
35
45
55
65
75
85
95
5 15 25 35 45 55 65 75
F8.1.1.1.EPS
Minimum oxygen concentration, % O 2 (for a minimum current of 4 mA)
Maximum oxygen concentration, % O
2
(for a maximum current of 20 mA)
Ranges over which oxygen
concentrations can be set
Outside ranges
Figure A Max. and Min. Oxygen Concentration Set Ranges