Yokogawa Low Concentration (ppm) Zirconia Oxygen Analyzer OX400 - Manual (Page 43)

<6. Operation and Parameters>
6-6
IM 11M10B01-01E
6.1.5 Setting Alarms (Oxygen Concentration High/Low Alarms) “ALM”
Operation: Hold down the [MODE] key for 2 seconds, select “ALM” with the [▲], [▼] keys, and
press the [ENT] key.
High and low limit alarms can be set to the measured oxygen concentration values. With respect to
the alarm setting, the following four options are available: No alarm “oFF,” high/low limits “ALL,” high
limit alarm “AL.HI,” and low limit alarm “AL.Lo.” If the high and low limit values are reversed or the set
value is larger than 100%, an input error occurs and the setting is not accepted. Furthermore, the DO
contact output closes in the event of an oxygen concentration alarm (ALM7). In other words, an alarm
contact is activated.
Figure 6.6 shows a setting example. With respect to the input method of a numerical value, decimal
point, and unit, see Section 6.6.
CAL
ALM
▼↓↑▲
▼↓↑▲
[ENT]
oFF
ALM
[ENT]
[ENT]
▼↓↑▲
oFF
ALM
▼↓↑▲
▼↓↑▲
▼ ▲
▼ ▲
100. 0
AL.HI
PPM [ENT]
1 100 00.11
AL.Lo
PPM
[ENT] [ENT]
0 0. 000
AL.Lo
PPM [ENT]
0. 000
AL.Lo
PPM[ENT]
ALL
ALM
1 1 00. 0
AL.HI
PPM
HI
ALM
▼ ▲
Lo
ALM
[ENT]
0 0. 000
AL.Lo
PPM [ENT]
0. 000
AL.Lo
PPM [ENT]
[ENT]
1 1 00 . 0
AL.HI
PPM [ENT]
100. 0
AL.HI
PPM [ENT]
MODE
% % %
%
%
% %
% %
To “rEV”
Hold down for 2 seconds.
To “Lo”
No concentration alarm is confirmed.
Return to “ALM.”
Return to “ALM.”
Return to “ALM.”
Return to “ALM.”
Enter the concentration
alarm low limit value.
Enter the numerical value,
decimal point, and unit.
Enter the numerical value,
decimal point, and unit.
Enter the numerical value,
decimal point, and unit.
Enter the numerical value,
decimal point, and unit.
Low limit value
is confirmed.
Enter the concentration
alarm high limit value.
High limit value is confirmed.
The main display flashes
in the event of an input error.
Examples of input error
High and low limit values are reversed.
Input value is larger than 100%.
Pressing the [MODE] key in the event of an input
error returns to the previous operation.
Enter the concentration alarm high limit value.
High limit value is confirmed.
Enter the concentration alarm low limit value.
Low limit value is confirmed.
To “oFF”
Figure 6.6 Setting Alarm (Oxygen Concentration Alarm) “ALM”