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Metal Fatigue in Load Cells.

Metal Fatigue in Load Cells.

Metal Fatigue in Load Cells can be recognised as the general wear and tear of everyday use on metal within the product. It is important to understand the term Metal Fatigue and know why it is particularly important when it comes to Load Cells.

Why does Metal Fatigue happen in Load Cells?

Metal fatigueoccurs when metal is put under repetitive strain reversals.  The rate at which fatigue occurs  depends on how far you bend the piece of metal, along with the frequency at which you bend it. Metal fatigue will happen in Load Cells if you are applying and reversing  a force very quickly over a very long period of time.

How can Ixthus help you to Prevent Metal Fatigue in Load Cells?

In order to prevent the metal fatigue what you must do is limit the movement that you get within the load cell therefore bending the metal less. We have a Fatigue Rated range of load cells which have been manufactured in a way to help reduce the metal fatigue within them.

Our Fatigue Rated Cells

The load cells are comprised of two rings linked by a diaphragm, the diaphragm is 3 to 4mm thick which makes it very stiff and therefore strong. This reduces the metal fatigue within the load cell so that, when at capacity, the Fatigue Rated Load Cells have the smallest amount of deflection compared with other Load Cells on the market.

Smaller amounts of deflection usually results in small signal from strain gauges, the Fatigue Rated load cells have holes  drilled into the web into which the strain gauges are inserted, this results in good strong signal, even though there is a small amount of deflection. Because metal fatigue doesn’t occur we are happy to guarantee a lifetime of 1 billion full reversal cycles at maximum capacity.

Load cells can also fail from electrical reasons. This range of load cells can have multiple strain gauge bridges, this means if a bridge does fail you don’t have to recalibrate, you can simply use another bridge.

To reduce the metal fatigue in load cells, call Ixthus on 01327 353437 to speak to an expert, or for more products visit the force and load section of our website.

You can also view the video by Roy Moffatt below.

For more information please contact: Ixthus Instrumentation Email: Tel:+44 (0) 1327  353437 Fax: +44 (0) 1327 353564

Article date: Mon, 26 Jan 2015 09:12:15 +0000 GMT

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Title:Metal Fatigue in Load Cells.



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