Edwards ELD500 Series

D135-10-880C - Operation
Page 59
Alarm delay
Main menu > Trigger and Alarms > Alarm delay
In some applications (for instance during pump down in a „chamber test system“) it might be
necessary to block an alarm for some time after pressing START.
This delay time of the alarm can be changed.
After pressing START the loudspeaker is activated as soon as the leak rate drops below trigger
level 1 or after the entered alarm delay time has elapsed. This setting is only active for the
audio alarm types SETPOINT and TRIGGER ALARM (See Audio alarm type).
Audio alarm type
Main menu > Trigger and Alarms > Audio alarm type
The audio alarm type can be chosen.
Softkey 7: 
Increase the regular volume. The maximum value is 15.
Softkey 3: 
Decrease the delay time. The minimum value is 0 seconds.
Softkey 5: ?
Help text.
Softkey 7: 
Increase the delay time. The maximum value is 10 minutes up to infinity.
Softkey 2: Pinpoint
This function is for localization of a known leak rate value.
Softkey 3: Leak rate prop.
The sound will be proportional to the leak rate signal.
Softkey 5: ?
Help text
Softkey 6: Setpoint
The sound will be proportional to the leak rate signal only if trigger 1 is exceeded.
Softkey 7: Trigger alarm
An alarm sounds when the trigger 1 is exceeded.