Swann AMI Hydrogen QED Operator's Manual page 67

AMI Hydrogen QED
Program List and Explanations
5.3 Relay Contacts
5.3.1
5.3.1.1
5.3.1.1.1
5.3.1.1.25
5.3.1.1.35
5.3.1.1.45
A-96.250.791 / 040219
Alarm Relay: The alarm relay is used as cumulative error indicator.
Under normal operating conditions the contact is active.
The contact is inactive at:
 Power loss
 Detection of system faults like defective sensors or electronic
parts
 High case temperature
 Process values out of programmed ranges
Program alarm levels for the following parameters:
 Meas. Value
 Temperature
 Sample Flow (if a flow sensor is selected)
 Case Temperature high
 Case Temperature low
Alarm Hydrogen
Alarm High: If the measured value rises above the alarm high
value, the alarm relay is activated and E001, is displayed in the
message list.
Range: 0.00 ppb –20.00 ppm
Alarm Low: If the measured value falls below the alarm low value,
the alarm relay is activated and E002 is displayed in the message
list.
Range: 0.00 ppb –20.00 ppm
Hysteresis: Within the hyst. range, the relay does not switch. This
prevents damage of relays contacts when the measured value
fluctuates around the alarm value.
Range. 0.00 ppb –20.00 ppm
Delay: Duration, the activation of the alarm relay is retarded after
the measuring value has risen above/fallen below the programmed
alarm.
Range: 0–28'800 s
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