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<8. Detailed Data Setting>
8-2
IM 11M12D01-01E
<Permissible Setting Range>
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% O
2
or
in the range 6 to 76% O
2
.
The range max. O
2
concentration value (corresponding to 20 mA output) can be set to any value in the
range 5 to 100% 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% O
2
then range
maximum (corresponding to 20 mA output) must be at least 13% O
2
.
Setting example 2: If the range minimum (corresponding to 4 mA output) is set to 75% O
2
then range
maximum (corresponding to 20 mA output) must be at least 75x1.3=98% O
2
(rounding decimal part up).
F8-3E.ai
Minimum oxygen concentration, %O
2
(for a minimum current of 4mA)
Maximum oxygen concentration, %O
2
(for a maximum current of 20mA)
5
15
25
35
45
55
65
75
85
95
5
15
25
35
45
55
65
75
Ranges over which oxygen
concentrations can be set
Outside ranges
Figure 8.3 Minimum-Maximum setting range of oxygen concentration
< Default setting>
Both range 1 and the second range range 2 are set to 0 to 25% O
2
prior factory shipment.
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