SparkFun
Mini Load Cell - 100g, Straight Bar (TAL221)
This miniature straight bar load cell (sometimes called a strain gauge) can translate up to 100g of pressure (force) into an electrical signal. Each loa...
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This miniature straight bar load cell (sometimes called a strain gauge) can translate up to 100g of pressure (force) into an electrical signal. Each load cell is able to measure the electrical resistance that changes in response to, and proportional of, the strain (e.g. pressure or force) applied to the bar. With this gauge you will be able to tell just how heavy an object is, if an object’s weight changes over time, or if you simply need to sense the presence of an object by measuring strain or load applied to a surface.
Each straight bar load cell is made from an aluminum-alloy and is capable of reading a capacity of 100g. These load cells have four strain gauges that are hooked up in a wheatstone bridge formation. The color code on the wiring is as follows: red = Exc+, green = Sig+, black = Exc-, and white = Sig-. Additionally, these load cells offer an IP65 protection rating and features four M3 sized through-holes for mounting purposes.
Jargon buster
Plain-language definitions for the technical terms used above.
- Strain gauge
- A strain gauge is a sensor element whose electrical resistance changes when it is stretched or compressed. It is commonly used to measure force, weight, pressure or bending, and because its resistance change is small it usually needs precise differential measurement electronics such as a high-resolution ADC.
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TAL221 Load Cell Datasheet
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Supplier page — sparkfun.com
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