162  AO2000 CONTINUOUS GAS ANALYZERS  |  OI/AO2000-EN REV. B 
 
 
 
Limit value monitor parameterization 
Menu path 
MENU → Configure → Component-specific → Limit Values → 
Select Limit Monitor → ...  
Range selection 
All available limit value monitors are shown. 
Procedure 
 
Parameter Explanation  Action 
Direction 
< = Alarm on underflow of threshold value 
> = Alarm on exceeding threshold value 
Select 
Threshold 
in physical units  Set 
Hysteresis 
in physical units  Set 
Standard configuration 
As a rule, limit value monitoring for those components to be measured by 
the gas analyzer is factory-set. This requires that there be enough digital 
outputs on the I/O modules to handle the number of sample components. 
Note: Limit value monitors are factory-set or user-configured Limit Monitor 
function blocks. The Technical Information "Function Blocks – Descriptions 
and configuration" contains complete information on the individual function 
blocks.