Fig. 5-3: High Pre-Alarm And Main Alarm - Emerson Rosemount Analytical X-STREAM X2 Series Instruction Manual

X-STREAM X2
Defining high pre-alarm and main alarm
•
If two upper limits are set with one limit hig-
her than the other (fig. 5-3), a pre-alarm is
triggered when the measured concentration
exceeds the first limit (area B). If no corrrecti-
ve measures are taken and the concentration
exceeds the second limit (area C), a main
alarm is triggered.
Up to two alarms may be active per channel
at any one time.
Standard mode:
An alarm results in the assigned relay being
activated.
Settings:
• Level 1 > Level 2
• Level 1-Function: High
• Level 2-Function: High
Failsafe mode:
An alarm results in the assigned relay being
deactivated.
Settings:
• Level 1 > Level 2
• Level 1-Function: High FS
• Level 2-Function: High FS
If an alarm is active, a corresponding mes-
sage is displayed in line 4 of the measurement
display.
5-32
5.7 Checking the Settings
Relay condition
Status message on front panel
Fig. 5-3:
A
Activated
Deactivated
Activated
Deactivated
Standard mode
Activated
Deactivated
Activated
Deactivated
Failsafe mode
On
Off
High Pre-Alarm and Main Alarm
Emerson Process Management GmbH & Co. OHG
Instruction Manual
HASX2E-IM-HS
10/2012
B C
Main alarm limit
Pre-alarm limit
Time
Concentration level
Main alarm rising
Pre-alarm rising
Main alarm rising
Pre-alarm rising