pneumatic flow switch

benjo · Jan 5, 2007

We are looking for a sensor to go in a pneumatic tool line. We want to simply sense when the tool is being used and when it isn't. Which all seems simple. However we are having trouble getting a sensor that does the job at the right price. Does anyone know of anything that would due the job <£100 GBP (approx <£200 dollars)?

mgvol · Jan 5, 2007

I don't know if these will work with your flow range, but worth a look:

http://www.dwyer-inst.com/htdocs/flow/SeriesP2Price.cfm

rsdoran · Jan 5, 2007

There are numerous companies that have flow/no flow switches:
http://www.davis.com/showpage.asp?L3ID=2112

http://www.davis.com/showl5.asp?L5ID=5&L4ID=144

WireGuy1950 · Jan 5, 2007

Another option could be just a pressure switch.

When the tool is off the pressure is at maximum.

When the tool is on the pressure will drop.

If the pressure drop is enough, and the system pressure constant enough then this should work.

CharlesM · Jan 5, 2007

http://www.ifmefector.com/ifmus/web/home.htm

CharlesM · Jan 5, 2007

Here is what I was thinking. I have not used these but I have had good luck with some water flow sensors.

http://www.ifmefector.com/ifmus/web/dsfs!SL5101.html

bluebyu · Jan 6, 2007

Omega has a nice line.
http://www.omega.com/ppt/pptsc.asp?ref=FL500

pneumatic flow switch

benjo

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