Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 107)

<8. Detailed Data Setting>
8-1
IM 11M12A01-02E 8th Edition : Jan.13,2012-00
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 [Commissioning] in the Execution/Setup display.
(2) Select the “mA-output setup” in the Commissioning display.
(3) Select “mA-output1” in the mA-outputs 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 vol%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 Input Ranges
The range low and high values are restricted as follows:
The range min. O
2
concentration value (corresponding to 4 mA output) can be set to either 0
vol%O
2
or in the range of 6 to 76 vol%O
2
.
The range max. O
2
concentration value (corresponding to 20 mA output) can be set to any value
in the range of 5 to 100 vol%O
2
, however the range max. setting must be at least 1.3 times the
range min. setting.
If you do not observe this restriction, the measurement will be invalid, and any previous valid
value will be used. The gray area in figure represents the valid setting range.
Setting example 1
If the range minimum (corresponding to 4 mA output) is set to 10 vol%O
2
then range maximum
(corresponding to 20 mA output) must be at least 13 vol%O
2
.