Optional Blowback Configuration - Ametek AMEVision User Manual

Optional Blowback Configuration

The Blowback Configuration screen can be accessed from the Configuration
menu on the AMEVision controller. For this menu to appear, Blowback must
first be enabled on the Sensor Configuration screen.
Figure 5-1.
Blowback Configuration
screen.
The WDG-V allows you to choose from four Blowback trigger types:
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•
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Blowback Interval – Time in hours between automatic timed Blowback triggers.
Blowback Recovery – Time in seconds when the oxygen and combustible
readings are frozen after a Blowback has been triggered to allow the system to
return to equilibrium.
Low Flow Threshold – Flow reading in % at which a Blowback is triggered.
PN 9000-165-VE, Rev P
Manual Only – You must initiate the Blowback manually from the Utility
Menu. See below.
Timed – Blowback will occur continuously at a predetermined time inter-
val (i.e. every 2 hours). It is recommended that the time interval be at least
1 hour to prevent valve coil overheating.
Flow – Blowback will automatically be triggered if the flow reading from
the flow sensor drops below a user-defined threshold.
Timed and Flow – Blowback will occur at the predetermined time inter-
val unless flow drops below the user-defined threshold in which case the
Blowback will trigger due to low flow.
Low Flow triggered Blowback will only occur once per hour.
Optional Blow Back Configuration
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