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Load sensors are components of measuring devices that monitor and gauge forces of compression, tension and shear. They communicate to a computer system by sending weight data through converting mechanical force into an electrical output signal. These sensors are used in mechanical testing, ongoing system monitoring and as components in devices such as industrial scales.The most common type of load sensor uses strain gauges for the sensor section, which are very small devices that measure the strain of an object by converting internal deformation into electrical signals to precisely measure weight, force or strain.
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Leading Manufacturers

Strainsert Company

West Conshohocken, PA | 610-825-3310

tecsis LP

Worthington, OH | 614-430-0683

Cooper Instruments & Systems

Warrenton, VA | 800-344-3921

ATI Industrial Automation, Inc.

Apex, NC | 919-772-0115

HITEC Sensor Solutions

Littleton, MA | 978-742-9032

A strain gage is commonly a coil, although it can come in other shapes as well. A foil pattern is another common style of strain gauge. Force gauges use strain gauges in push-pull testing and flow measurements, utilizing these types of load sensors as part of a larger system rather then a simple circuit. While most measure and test with strain gauges, some are piezoelectric sensors, which use piezoelectric crystals to measure weight, strain, movement and vibrations.

Many of these sensors, although quite small, are built to support or hold as much as several tons, while miniature load cells are built to provide precise measurements for much smaller applications such as medical measurements. The range in size can be as vast as a load sensor that weighs a gram up to a load sensor that weighs over a hundred tons.

After load sensors transduce mechanical stress into electrical energy, the information that they monitor is then signaled to a recorder or other computerized data collection system. Load sensors use analog or digital technology for the recording and transferring of information. Common analog outputs are analog current, analog voltage and analog frequency, all of which are translated onto a screen as workable data.

Load Sensors
Load Sensors – Carolina Scales Inc.

Load sensors and gauges are used in manufacturing, processing and testing industries. The food processing industry uses them to precisely measure ingredients and for product distribution during packaging. Other applications include the testing of bridge building materials such as beams, for tension strength, as well as in railcar weighing and truck scales.

They are important components in calibration systems, and are also used in fatigue testing for research and development laboratories. So the automotive industry as well as construction, marine and industrial manufacturing all utilize this vital tool.

Load Sensors Informational Video