Yokogawa Single Channel Oxygen Analyzer System ZR22/ZR402 - Manual (Page 118)

IM 11M13A01-02E 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 Setting Minimum Current (4 mA) and Maximum Current (20 mA)
To set the minimum and maximum currents, proceed as follows:
(1) Select Setup in the Execution/Setup display.
(2) Select the mA-output setup in the Setup display.
(3) Select mA-output1 in the mA-output display.
(4) Select Min. oxygen conc. in the mA-output1 range display and press the [Enter] key.
The numeric-data entry display then appears. Enter the oxygen concentration for the
minimum current (4 mA); for example, enter “010” for 10% O
2
.
(5) Select Max. oxygen conc. in the mA-output1 range display and enter the oxygen
concentration for the maximum current (20 mA) in the same manner as in step 4
above.
(6) Set mA-output2 in the same way as the setting procedure for mA-output1 given
above.
8.1.2 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. If it does not fall within this input range setting, the setting will be
invalid, and the previous set values will remain.
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 13% O
2
or greater.