Low Cost Digital Load Cells with USB Out
10-10K Capacities+Low Profile+Rugged Load Cells. Priced from $99+s/h.
www.loadstarsensors.com

Load/Force Sensors by Stellar Technology
All ranges, configurations, & outputs, minitures, standard or custom.
www.stellartech.com

High-Quality Flat Load Cells
Buy high-quality load pins, force sensing bolts and studs, load cells, force sensing tension links, instruments and more at Strainsert.com. We are based in Pennsylvania.
www.strainsert.com

Load Cells
Load cells and Weigh modules for process weighing by METTLER TOLEDO.
www.mt.com/load-cells

Thin-Film Load Cells
Flexiforce load cell sensors are ultra-thin, flexible, non-intrusive, yet accurate, reliable, durable, and have better force sensing properties than any other thin-film force sensors.
www.tekscan.com

Load Cell Manufacturer
Directory of load sell suppliers Find load cells easy and fast.
www.Industrial101.com

Programmable Limit Switch Specialists
Many shapes, replacements, custom or 500 designs available, connectors for various applications. Look no further for your load cell solution, Toledo - one source, one solution.
www.ttoledo.com

AMOS Load Cells
Sensors and transducers for the measuring of load, pressure, acceleration, displacement, tilt, inclination and torque.
www.amos-sensoren.de

Load Cells
Search Thousands of Catalogs Today for load cells.
www.globalspec.com

Load Cells
Wide variety of load cells and tensiometers.
www.highgearsales.com

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A load cell is typically an electronic device (transducer) that is used to convert a force into an electrical signal. This conversion is indirect and happens in two stages. Through a mechanical arrangement, the force being sensed deforms a strain gauge. The strain gauge converts the deformation (Strain (materials science)) to electrical signals. Normally, a load cell consists of four strain gauges in a wheatstone bridge configuration, but is also available with one or two strain gauges. The electrical signal output is normally in the order of a few millivolts and requires amplification by an instrumentation amplifier before it can be used. The output of the transducer is plugged into an algorithm to calculate the force applied to the transducer.

Although strain gauge load cells are the most common, there are other types of load cells as well. In industrial applications, hydraulic (or hydrostatic) is probably the second most common, and these are utilized to eliminate some problems with strain gauge load cell devices. As an example, a hydraulic load cell is immune to transient voltages (lightning) so might be a more effective device in outdoor environments.

Other types include piezo-electric load cells (useful for dynamic measurements of force), and vibrating wire load cells, which are useful in geomechanical applications due to low amounts of Drift (telecommunication).

Every load cell is subject to "ringing" when subjected to abrupt load changes. This stems from the spring-like behavior of load cells. In order to measure the loads, they have to deform. As such, a load cell of finite stiffness must have spring-like behavior, exhibiting vibrations at its Normal mode. An oscillating data pattern can be the result of ringing. Ringing can be suppressed in a limited fashion by passive means. Alternatively, a control system can use an actuator to actively damp out the ringing of a load cell. This method offers better performance at a cost of significant increase in complexity.

Load Cell Types

• Double Ended Shear Beam
• Single Ended Shear Beam
• Single Column
• Multi Column
• Membrane
• Torsion Ring
• Bending Ring
• Pancake
• "S" Cell

Applications

• Finding the Center of Gravity of an object by weight
• truck weighing
• tension measurement
• force measurement
• railcar weighing
• hopper, tank and vessel weighing
• onboard Weighing
• electronic Crane Scales
• wireless Crane Scales
• structural health monitoring

External links

• Load cell tutorial
• Diagrams of load cell applications
• What is a loadcell?
• Tension Load cells

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A load cell is an electronic device (transducer) that is used to convert a force into an electrical signal. This conversion is indirect and happens in two stages.

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