×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Load Cell Advice

Load Cell Advice

Load Cell Advice

(OP)
Hello All,

New to this forum, and to load cell applications. I am working on a fatigue testing fixture which will need to be fitted with a single compression load cell. There are tons of ways to go about this but I am already over budget and was wondering if anyone had any ideas on the least expensive way to power, condition, and acquire data from a basic button load cell. Several different configurations from Omega, Futek, etc put me well into the $1000 range.

Load cell will need to have capacity of around 4000lb, accuracy to +- .25% FSO, and I will need to sample at up to 50Hz.

Is the reality that I am just going to have to spend the coin or am I missing something with making a more economical system.

Thanks

RE: Load Cell Advice

0.25% of 4000 is 10.

Do you really need that accuracy?

RE: Load Cell Advice

he probably wants to fulfill the ISO 7500 norm for his rig

RE: Load Cell Advice

Hello,

Would something like this work?

http://www.transcell.com/Digital_Indicators/c10/p2...

We use a unit like this in one of our machines to power 4 shear beam load cells. Data is output from the RS-232 port to an onboard computer that logs the data and sends it to some other software. The price on the site is not what we pay - I think our price is actually around $135.

Kyle

RE: Load Cell Advice

(OP)
KJoiner, thanks for the input I am looking into it now, only concern is the 5vdc exitation would cut my accuracy in half if I have a 10vdc load cell correct?

The problem with the accuracy is the force put into this rig will range from around 75lb to 2000lb in one configuration, and 150lb to 4000lb in another configuration. I would really like it to be even more accurate than 10lb but didn't think that was reasonable due to cost concerns.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources