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ABOUT GAS
FAQ - Controllers
26. What are "Enrichment" and "Deficiency" alarms?
Configuring for Enrichment alarms means that if the gas concentration goes above the setpoint the alarm activates while configuring for Deficiency alarms means that if the gas concentration goes below the setpoint the alarm activates.
For monitoring most gases, typically Enrichment alarms are selected. However, for monitoring oxygen levels, it is usual to select Deficiency alarms for at least one alarm.