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Originally Posted by unregistered
I liked the one with a 4-20mA speed control - for testing
dunno about accuracy or repeatability
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That was the feature that caught my eye, also. The variable speed with integrated process control made me a little jealous. I had no idea that feature would be available. I have had to build a variable converter (3-terminal regulators) to get variable speed. I still haven't fired it up yet -so no comment on the effectiveness.
I could have controlled the pump directly with my onboard PLC. Mabye we will know more about these by the time I build another system...