Sometimes I don't notice a decrease in the flow of coolant to the welding machine, and then the machine's temperature gets hot causing machine trouble.
How do you control the coolant flow?
I'm using a float type flow meter, however when the coolant gets dirty the flow indicator is difficult to read. Do you have any good ideas?
If that's the case you should consider using a non-wetted electrode electromagnetic flow sensor. It has no paddle wheels, electrodes or obstructions in its pipe, so even if the coolant is dirty the pipe will not get clogged and the flow indicator is always easy clear visible.