Yokogawa Single Channel Oxygen Analyzer System ZR22/ZR402 - Manual (Page 113)

IM 11M12A01-03E 8-1
8. Detailed Data Setting
8. Detailed Data Setting
8.1 Current Output Setting
This section describes setting of the analog output range.
8.1.1 About Input Ranges
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 more than 98% O
2
or greater, (75
ϫ1.3% 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
Minimum oxygen concentration, %O 2 (for a minimum current of 4 mA)
Maxim
um o
xygen concentr
ation, %O
2
(f
or a maxim
um current of 20 mA)
Ranges over which oxygen
concentrations can be set
Outside ranges
FAE.EPS
Figure A Max. and Min. Oxygen Concentration Set Ranges