Instruction manual

8.0 DETAILED DATA SETTING SM425 INSTRUCTION MANUAL
Figure 8-3 mA-outputs preset Selection
2. Select the desired equipment state. Figure 8-3 shows an example of selecting Maintenance.
Select the desired output hold selection.
3. If a preset value is selected, set the corresponding output current. Select the preset value just
below Maintenance on the screen; the numeric-data entry display screen appears. Enter the
desired current value. To set 10 mA, type in 100 and press the [Enter] key to complete the
setting. The setting range is from 2.4 to 21.6 mA.
NOTE: The "Error" selection on the “mA-outputs presets” display screen is not available for option codes
"/C2" or "/C3" (NAMUR NE 43 compliant).
8.2.4 Default Output Hold Settings
Default output hold settings are shown in Table 8-3.
Table 8-3 Output Hold Default Values
8.3 Configuring Oxygen Concentration Alarms
The SM423 has four programmable alarms based on oxygen concentration: high-high, high, low, and low-
low. This paragraph explains the operation and programming of these alarms.
8.3.1 Alarm Values
1. High-high and high alarm values: These alarms occur if oxygen levels exceed the alarm set
points and the alarms are enabled (set to ON). The range for these set points is 0 to 100% O2.
2. Low and low-low alarm values: These alarms occur if oxygen levels fall below the alarm set
points and the alarms are enabled (set to ON). The range for these set points is 0 to 100% O2.
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