Endress+Hauser OXY5500 - Setting the Forced Zero Mode; Forced Zero Mode Definitions

BA02195C OXY5500 Optical Oxygen Analyzer
Endress+Hauser 4
–27
• Forced Zero (Hard Zero): Provides a measuring mode that displays
negative oxygen values as zero. Devices can still be used in standard
measuring mode in which the Forced Zero function is inactivated and
negative values are displayed.
Setting the Forced Zero mode
1. Click the Forced Zero mode field to view the drop down menu.
2. Select one of the forced zero modes shown in Table 4–3.
Forced Zero mode definitions
• Passive mode: Forced zero option is inactivated and negative measure-
ment readings are shown.
• Active mode: In this mode, a negative value will be seen as 0% [ppm] O
2
.
After rebooting the device, the default mode “passive” is reactivated.
Table 4–3 Forced Zero Modes
Forced
Zero
Settings
Negative Oxygen
Value Display
Alarm Signal
“Forced Zero is
Active”
Forced Zero
Active After
Reset
Passive yes no no
Active no no no
Active with
alarm
no yes no
Active stored no no yes
Active with
alarm stored
no yes yes
FORCED ZERO DROP
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