Measuring Capacity of a Loadcell

See my reply in :
What is the difference using a single & more than one loadcells

Lynlynch,

I'm not able access the link. I get to a CR4 page that says it's invalid. Anyone else have this problem? or know how to get around it?

Thanks.

I get the error too. Looks like it has been removed.

OK, a load cell is an inanimate object, incapable of knowing which part of the load is tare and which part is live.

I gave grouchy ole LL a GA, but in the referenced thread. Well, OK, maybe one here, too. Take his advice. It only takes a few hours messing at the workbench to fully understand loadcells. But, you really HAVE to do hands-on with this stuff. There just ain't any theory that will ever substitute.

Thanks, I think.

You'd be grouchy too if you had to read such nonsense as this:

"i want to know that if we have a contactor which has two terminal one is NC & onther is NO ,when we apply a energized signal what will happen and when a deenergized signal what will happen

NC+ de-energized → what will be out put supply either NO or NC

NC+ de-energized → what will be out put supply either NO or NC

No +Energied → what will be out put supply either NO or NC

No+Energied → what will be out put supply either NO or NC"

from: contactor

I can't believe people think they can gain wisdom by having someone else do the thinking for them.

Now you've put me in a sour mood again.

Or if it is mounted below any material storage silo for weight measurement then is that silo weight is also considered in that total capacity weight of the loadcell

Yes, it must be.

Thanx all of you for your precious reply.

But let me clarify some points to you.

I know that it'll measure the silo weight too. But the main theme is that,

Loadcell capacity = 10 T

Suppose Silo weight = 2T &

Material weight = 10T

Then in this condition will the loadcell measure

Silo weight (2T) + Material weight (10T) = 12T ?

OR

Loadcell total capacity = Silo Weight (2T) + Material Weight (8T)

"I know that it'll measure the silo weight too." That depends on whether the load cell is supporting the silo or not. If you want to measure the contents of the silo, then the load cell should be supporting a movable floor, whose weight must be subtracted or tared out.

If the load cell is in fact supporting both the silo and its contents, then your original question is appropriate.

Most strain gage sensors are built very sturdily so that they can usually withstand 150% of FS. The manufacturers data sheet will tell you that.

The load cell rating is for the maximum over all weight of the system. That is the silo and any material that you would place in it up to 10T. If you were to put 10T in a 2T silo with a 10T load cell it would not give you an proper measurement. Most load cells have mechanical stops to prevent overloading.

Is the 10T a load cell spec or the silo measurement system spec?

If it is the load cell spec, then is is the capacity on anything suspended on it, including the silo.

The total weight measuring capacity of a load cell is nothing but the capacity mentioned.

If the silo is mounted on the load cell, then the tare weight of the silo & the mateial weight is added to considered as the material capacity.

Regards

Thanx again all of you

There is some additional info. for you

Silo weight = 2 T

Silo capacity = 11T

Loadcell capacity = 10T

We fill up the silos upto 9 to 9.5T

The capacity of a load cell is normally specified based on the Gross weight. So in the case the maximum weight you could apply to this load cell is 10t. When using in a silo application, we normally recommend the capacity of the load cell to be calculated as below:-

(Gross weight of silo/number of supporting legs on silo) x 2

So for a 4 legged silo with a gross weight of 100t, the load cell capacity would be:-

(100/4) x 2 = 50t

For more information on load cells please go to our web site at:-

http://www.lcmsystems.com/glossary_of_terms.html

Load cell capacity mean gross weight on load cell. Both the silo and material inside the silo weight should not increase beyond the capacity of the load cell.