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#1 |
Member
![]() ![]() Join Date: Oct 2016
Location: Highland
Posts: 90
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Force/Pressure Applied Sensor?
I’m looking for, and I can’t seem to find, a sensor or transducer that will give me a reading of pressure applied to an object. Squeezing or clamped pressure is what I’m trying to achieve. It’s going into an ML1400 and it could be a 4-20ma signal or a 10-30v signal, either could be worked with.
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#2 |
Member
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Try searching for a load cell. Many types available.
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#3 |
Member
![]() ![]() Join Date: Oct 2007
Location: Tennessee
Posts: 2,097
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as RDS said, look at load cells.
most all load cells are mv/volt excitation, so you will need an amplifier. you can buy them 0-10v or 4-20ma. CAUTION - this is from experience. what is your application? I say that because load cells are subject to destruction from load shock. applying a load to a load cell is one thing, applying a sudden grip load is another story. sudden application of a force to the load cell will result in an impact load of 6-10 times what the load sees after it settles (2-3 seconds later). for example, picking up a 25 lb weight using an air cylinder even 1 inch at what I considered a slow rate caused the load cell to fail after a month. we had to use a 250 lb load cell. we soon learned to increase our load cell capacity by a factor of 6 to 10. james |
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#4 |
Member
![]() ![]() Join Date: Jul 2005
Location: Heath, TX
Posts: 1,937
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If you want to put a device inside the stack, look at Compression types.
If it's driven by an air cylinder, you could look at the stress at the cylinder mounts, and use a Tension/Compression type with bolt studs. |
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#5 |
Member
![]() ![]() Join Date: Oct 2015
Location: al
Posts: 107
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You can check out this load cell and amplifier; you can tie this to your PLC to get the 4-20 mA reading.
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#6 | |
Member
![]() ![]() Join Date: Oct 2016
Location: Highland
Posts: 90
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Quote:
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#7 |
Member
![]() ![]() Join Date: Jan 2013
Location: UK
Posts: 657
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Load cell sounds like the thing. You can make or buy a housing for them that stops them from seeing any greater force than they can withstand.
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#8 |
Member
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a simple spring with a contact is sufficient, or have a look at arduino tactile sensor
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