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Old 11-12-2009, 02:45 PM   #1
sjlammer
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Default Flow Control for System Automation

Seems like one of the big hurdles in system automation is how to determine how transfer X gallons from the HLT to the MLT, and other volume specific processes.

Flow meters are expensive
ultrasonic level sensors are expensive.

I found this:
http://www.koboldusa.com/product_fil..._datasheet.pdf

assuming you could find one for lower pressures, you could use this to regulate the flow out of the pump....

therefore volume would essentially be a function of time.

Just a thought i wanted to throw out there for you guys to mull around.

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Old 11-12-2009, 03:19 PM   #2
Sawdustguy
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Quote:
Originally Posted by sjlammer View Post
Seems like one of the big hurdles in system automation is how to determine how transfer X gallons from the HLT to the MLT, and other volume specific processes.

Flow meters are expensive
ultrasonic level sensors are expensive.

I found this:
http://www.koboldusa.com/product_fil..._datasheet.pdf

assuming you could find one for lower pressures, you could use this to regulate the flow out of the pump....

therefore volume would essentially be a function of time.

Just a thought i wanted to throw out there for you guys to mull around.
I don't think that would be as accurate as a $11, simple pressure sensor such as a Motorola MPX5010GS. Simply put a bulkhead coupler as low as possible in your vessel, run a 1/8" silicone tube from the output of the coupler to the sensor and you have it. No dip tube necessary. The sensor will output a voltage corresponding to the pressure which could be converted to volume.
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