using a current sensor to energize a soleniod
using a current sensor to energize a soleniod
(OP)
Good morning,
In our Tig welding process we are currently using a micro switch located on the operators handle of the torch to activate a soleniod that supplies our welding assist gas.
I would like to purchase design and build a current sensor that would eliminate the need to run a pair of wires and the micro switch to the torch handle. I'm thinking of a switch that can sence the current flow in the power cable and then close energizing the soleniod to open and gas to flow. I am hoping to keep it this simple. My question is can it be done and how.
respectfully
2571
In our Tig welding process we are currently using a micro switch located on the operators handle of the torch to activate a soleniod that supplies our welding assist gas.
I would like to purchase design and build a current sensor that would eliminate the need to run a pair of wires and the micro switch to the torch handle. I'm thinking of a switch that can sence the current flow in the power cable and then close energizing the soleniod to open and gas to flow. I am hoping to keep it this simple. My question is can it be done and how.
respectfully
2571





RE: using a current sensor to energize a soleniod
RE: using a current sensor to energize a soleniod
RE: using a current sensor to energize a soleniod
Why not sense off that circuit when the current is on/off?
RE: using a current sensor to energize a soleniod
RE: using a current sensor to energize a soleniod
RE: using a current sensor to energize a soleniod
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Sometimes I only open my mouth to swap feet...
RE: using a current sensor to energize a soleniod
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: using a current sensor to energize a soleniod
Lee
RE: using a current sensor to energize a soleniod
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: using a current sensor to energize a soleniod
RE: using a current sensor to energize a soleniod
Lee
RE: using a current sensor to energize a soleniod
Depends which of your posts you think I answered. I've always understood the 'mains lead' is the cable containing 2 or more cores in one outer sheath. Your first description was fine, but the second was careless. Using a CT on the input supply is certainly a good solution though, and if the OP needs the level of explanation that we're bickering about then it's a lost cause anyway!
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Sometimes I only open my mouth to swap feet...
RE: using a current sensor to energize a soleniod
Or a cheap solution is a manual shut off valve where the welder operator would turn on the valve before he starts welding. He would have to remember when to turn off the gas when he stops. Should be simple since he already knows to turn on the gas regulator.
RE: using a current sensor to energize a soleniod
RE: using a current sensor to energize a soleniod
respectfully
2571