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Im using an excited toroid over the penny that generates a different waveform when zinc vs. copper penny is placed in its magnetic field. Its called and eddy current.

this is being used to sort pennies that are basically sliding down a ramp and will be sorted based on weather it is a copper of zinc penny

I need a small >.5in pneumatic valve that is electronically actuated. I need to for a sorting machine that will send a blast of air when a voltage is sent to it. my idea was to have one side normally pressurized and then when i apply a voltage it opens the valve and sends a jet of air out...

I have a problem For one of my projects I have a municipal Multiple Hearth Furnace that we are trying to rob some heat for process water. The top of the incinerator is a huge metal plate and it is about 300 F. I need to find a flat heat exchanger that will transfer water from the furnace to...

does anyone have any idea what a good flow meter for a 12" water pipe I need to spec one for a Muni job and I would just like some ideas on brands flow range 200-5000 GPM max flow 8000 GPM pressure drop 4 PSI +/- .1 " stainless thanks alot

so basically what you want is a scrubber to get fine particulate out of the air correct. this works extremely well venturipak by envirocare is an example of this. the faster the air goes the more particulate matter that is extracted you want a mach number of 4+ at the venturi throat. Unless I...

no I definately hooked them up in paralell I thought that would be the problem too. but just to make sure I hooked 2 T/C + to + on plug and 2 T/C - to - on plug is there only one way to hook up a thermocouple isnt it just two disimilar metals? I will try to hook reverse polarities on the two TCs...

Well I wired the two thermocouples in paralell and it seems that the tepmerature is wayyyy too hot for what its supposed to be I would say around twice as hot as it should be any suggestions about why this is acting up like this??

so if you hook them up in paralell it will give you the average of the two TCs?

Im a Mechanical engineer so I dont really know what a thistd amplifier is I googled it but it came up with nothing if you could elaborate on what that is that wousl help maybe its just a spelling error but I dont know.

I was wondering if there is a way to wire two thermocouples so that they send the highest of the two signals to the signal processor. I have a single temp reader but there are two things that I need to measure the temperature that should remain about the same temperature all of the time. I...