Honeywell Vertex M User Manual page 61

Lower Detection Limit (LDL) Level
The monitor loads the default LDL level when a target gas is chosen. See "Detectable Gases" on
page 169 for a list of default LDL levels. The user-configured LDL can be disabled by un-
checking the check box. When the user-configured LDL is disabled, the Vertex M system will
use the default LDL level. A new level may be entered only within the range of the Vertex M
detection system.
Make the gas assignments before changing the LDL level. Changing the gas automatically
resets LDL level settings to the factory defaults. The Vertex M system will not allow invalid or
inappropriate entries to be made while setting the LDL level.
These are examples of invalid attempts that will be rejected:
When wider LDL is disabled
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LDL level setting is greater than half of TLV level
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LDL level setting is smaller than default LDL level
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LDL level setting is greater than alarm 1 setting or alarm 2 setting
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LDL level setting is greater than concentration logging setting level
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LDL level setting is greater than PLC F/S Conc. setting level.
l
When wider LDL is enabled
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LDL level setting is greater than TLV level
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LDL level setting is greater than alarm 1 setting or alarm 2 setting
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LDL level setting is greater than concentration logging setting level
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LDL level setting is greater than PLC F/S Conc. setting level.
l
Alarm Level 1 and Alarm Level 2
Vertex M loads default alarm levels when a target gas is chosen. See "Detectable Gases" on
page 169 for a list of default alarm levels. New levels may be entered only within the range of
the Vertex M detection system.
Make the gas assignments before changing alarm levels. Changing the gas automatically
resets alarm level settings to the factory defaults.
The Vertex M system will not allow invalid or inappropriate entries to be made while setting
alarm levels. Following are three examples of invalid attempts the Vertex M system will reject:
The alarm setting for Alarm Level 1 is greater than the setting for Alarm Level 2
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An alarm setting is less than the lowest alarm level for that target gas
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An alarm setting is greater than the full scale for that target gas
l
Vertex M 61 User Manual