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Old 04-11-2004, 07:14 PM
Richard L Richard L is offline
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Join Date: Oct 2003
Location: England
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The DDS2 may be a solution for a fix-rate injection system but will be very difficult to diagnose a fault on one jet with vary amount of water when fed from a PWM controller.

The triggering window can either be set wider or narrow but it is not easy to set the whole operating range , say between 200cc to 300cc/min is the window width, the PWM controller could easy vary the flow rate betweenm 50cc to 400cc/min. In this applciuation, how does it determine if the jet is block or just low duty cycle?

The DDS2 was desogned to work with system 1s (fixed rate) and all other systems with variable delivery rate has their own diagnostic circuitry, able to detect a blocked jet in a wide dymanic range.

Consider this block jet problem is not an easy one to overcome when changing to a aquamist/shurflo system.
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