Load Cell Design With Strain Gauge

I wish to have a design for a load cell using a strain gauge. Alternatively, if you can identify a commercially available product that satisfies the following requirements, I will pay the contracted payment amount for such an identification. It is not required that you build the load cell.

The overall configuration that is envisioned is a strain gauge mounted to a strip of aluminum (load element) with the following dimensions. The attached drawing shows an aluminum load element and a circuit board that measures a maximum of 20 mm x 20 mm. The circuit board will be positioned approximate 50 mm away from the load element.
Between 15 and 17 mm long (mean 16 mm)
Between 6 and 7 mm wide (mean 6.5 mm)
Between 1.4 and 1.6 mm thick (mean 1.5 mm)
The area available for the attachment of a strain gauge measures 5.5 mm x 13.0 mm.

The load cell will be used to measure stress on a rope.
The stress on the rope will range from 0 to 40 kg.
The supply voltage to the load cell will be 5.0 volts.
The output of the load cell should be a voltage that ranges from approximately 0 volts for no load to approximately 3.2 volts for full load.
The precision of the output voltage should be within +/- 5% of the stress at a fixed temperature.
Temperature compensation is not required.

Deliverables include:
Schematic of the circuit
Bill of materials for the circuit
It shall be possible to procure all materials from suppliers in the United States.
The recommended source for the strain gauge is http://www.omega.com/toc_asp/sectionSC.asp?section=E&book=pressure but other strain gauges will be considered.
Recommended sources for other components are www.digikey.com or www.mouser.com.

I am not experienced with load cell design, so feel free to ask questions if I have left anything out. Also feel free to make suggestions if the above description is found to be too limiting.

Search All Jobs:

Full Time Permanent Position - SEO,Blog Post Writer/Internet Marketing/Social Networking

I have three wordpress websites that I need a full-time employee to do all of my online marketing and content creation. The three websites are www.KarinaHarris.com, www.KarinaSecrets.com, www.CueMe...

  • Fixed Price Project
  • Max $275
  • 5 years, 5 months left

App Builders Required

Hi, we are an app design and build company. We are currently recruiting sales people in the UK. We use the Bizness Apps platform so are only looking for designers who are expert with this platform. We anticipate a high volume of work. Applicants must be able to show examples of their work. Thank yo

Skills Required: design adobe-photoshop
  • Fixed Price Project
  • Max $50
  • 3 years, 10 months left

Graphic Designer

Hi We are looking for a person who can do some graphic design for our photographic business on a fixed price basis. We need a template and matching watermark designed for our clients...

  • Fixed Price Project
  • Max $10
  • 3 months, 1 week left

Ad / Coupon Designers

Coupon Magazine Company looking for Ad / Coupon Designers. We need 10 professional designers to design 20 to 50 ads / coupons a month, we will pay $5.00 Per add designed.

  • Fixed Price Project
  • Max $5
  • 2 years, 3 months left

Experienced Real Estate SEO Expert Wanted For Lucrative Partnership

Brand new wordpress site, recently completed in need of experienced SEO person or team to work atleast 20 hours per week on this new site. www.palmbeachrealestatepros...

  • Fixed Price Project
  • Max $50000
  • 2 years, 6 months left

Design A 3 Page Website

I would like quotes for designing me a 3 page website. I have a domain name and can get hosting.I would need a squeeze page, a Thank you and OTO page and a download page. Pretty simple and basic. I will also need around 3 more websites under different URL's shortly after.

  • Fixed Price Project
  • Max $100
  • Job Expired

Creating A New MMORPG - Need Workers/ Partners (URGENT).

Basically, I need help making the mmorpg (as i can't make it myself and im looking for some workers to be part of the company:) ). Like making the models, enviroments, site, coding etc. And when the game gets profit, i will give some of the profit for whoever is working in the company...

  • Fixed Price Project
  • Max $5
  • 2 years, 6 months left

Indie Gaming Company Looking For People/teams To Join Us

We are currently planning for 1 game as of now, and are need of experience team or people that are willing to join a team and work together. You will be working with 3D modelling/Sound, all that good stuff...

  • Fixed Price Project
  • Max $500
  • 1 year, 10 months left

Resell Web Design & Development

I am looking to resell web design and development as a part of my companies services, what are your rates for complete websites? This will be an ongoing partnership, all projects will be sent to the contractor...

Skills Required: web-design
  • Fixed Price Project
  • Max $600
  • 1 year, 6 months left

Comic Book Illustrator

Looking for a comic book illustrator, to supply 8.5"x11" pages in color and in high resolution PDF ready for printing. Must be able to illustrate ancient warriors, in ancient setting. Must have samples of previous comic book work. The listed budget is $25 per page.

  • Fixed Price Project
  • Max $25
  • 2 months, 1 week left

Job Details

  • Job Type
  • Fixed Price Job
  • Budget
  • Max $50
  • Start Date
  • 01/30/2012 10:56:43 PM
  • Job Status
  • Job Expired