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Emerson Process Management GmbH & Co. OHG 5-33
X-STREAM X2
Instruction Manual
HASX2E-IM-HS
02/2012
5
Startup
• Dening low pre-alarm and main alarm
Standard mode:
An alarm results in the assigned relay being
activated.
Settings:
• Level 1 > Level 2
• Level 1-Function: Low
• Level 2-Function: Low
Failsafe mode:
An alarm results in the assigned relay being
deactivated.
Settings:
• Level 1 > Level 2
• Level 1-Function: Low FS
• Level 2-Function: Low FS
If an alarm is active, a corresponding mes-
sage is displayed in line 4 of the measurement
display.
Fig. 5-4: Low Pre-Alarm and Main Alarm
5.7 Checking the Settings
If two lower limits are set with one limit lower
than the other (g. 5-4), a pre-alarm is trigge-
red when the measured concentration falls
below the rst limit (area B). If no corrective
measures are taken and the concentration
falls below the second level (area C), a main
alarm is triggered.
Up to two alarms may be active per channel
at any one time.
Concentration
Activated
Zeit
Concentration level
Pre-alarm limit
Main alarm limit
Deactivated
Activated
Deactivated
Activated
Deactivated
Activated
Dectivated
A B C
On
Off
Relay condition
Failsafe mode
Status message on front panel
Standard mode
Main alarm falling
Pre-alarm falling
Main alarm falling
Pre-alarm falling