Showing posts with label Load Cells. Show all posts
Showing posts with label Load Cells. Show all posts

Load Cells: The Vital Component in Precision Weighing

Load Cells: The Vital Component in Precision Weighing

A load cell is a transducer or a sensor that converts force into an electrical signal. In industrial weighing applications, it's a critical and core component used to measure weight or force.

The most commonly used types of load cells in industrial applications are strain gauge load cells, which work on the principle of piezoresistance. When a load or force is applied to the strain gauge, it deforms or changes shape. This change in shape causes a measurable change in the electrical resistance. The change in resistance is proportional to the load applied, meaning the more significant the load, the larger the change in resistance.

This change in resistance is usually minimal, so it's converted into an electrical signal using a Wheatstone bridge configuration. The signal is then amplified and converted into a digital form by an analog-to-digital converter. This digital signal can be interpreted and displayed on a readout device, such as a digital display or a computer.

In industrial weighing applications, load cells are ubiquitous, with applications including weighing scales, industrial scales, batching scales, and load-testing machines. They can measure loads ranging from tiny (a few grams) to large (hundreds of tons).

Load cells are robust and reliable, capable of withstanding harsh industrial environments. They can handle extreme temperatures, high levels of vibration, and other challenging conditions. Additionally, they offer high precision and accuracy, which are critical in many industrial applications.

In addition to their use in weighing, load cells measure tension, compression, and shear forces, making them versatile tools in many industrial processes. They play a significant role in quality, inventory, and process control in various industries, including manufacturing, agriculture, food processing, pulp & paper, power generation, transportation, and construction.

BLH Nobel is a leading weighing and force measurement solution provider, including load cells, weighing modules, and process control equipment. The company is renowned for delivering precision, reliability, and durability, particularly in harsh industrial environments.

KIS Weigh Modules, adeptly deployed on dynamic process vessels amidst harsh, sanitation-intensive areas, have mastered the art of thriving amidst grime and grit. Their performance remains uncompromised and exceptional, even in the most challenging conditions riddled with corrosive acids, potent industrial cleaning agents, acidic vapors, and abrasive granulated powders.

Part of the remarkable performance of the BLH Nobel KIS is its ingenious cylindrical design. KIS beams can be maneuvered within the module's infrastructure, aligning precisely with the direction of the applied weight. The modules feature cylindrical, electro-polished stainless steel, forming an almost friction-free surface, allowing the module yoke to glide effortlessly during thermal expansion and contraction periods.

(508) 351-6200

What is a Binocular Strain Gauge Load Cell?

Load cells, the heart of weighing systems, are mechanical devices that use strain gages to provide a measurable electrical output which is proportional to the force applied. The electrical output can be either an analog voltage or current output, or a digital on/off output.

Used for tension, compression, and or shear measurement, load cells are packaged and oriented to perform in testing equipment, electronic scales, and monitoring systems. Tension load cells are used for measuring forces that are in-line and "pull apart". Compression load cells are used to measure forces that are in-line and "push together". Shear load cells are used to measure tension or compression forces that are offset (not in-line). When selecting load cells, there are many form factors or packages to choose from to insure their physical size is compatible with space available for the application, such as inside an electronic weighing scale.

The strain gage is a resistive sensor whose resistance changes based upon the applied strain. A strain gage is attached to some structure, and when that structure is deformed (tension, compression, shear), the resistive strands in the strain gage follow the structure deformation, causing an electrical resistance change. This change in resistance is converted to units of strain or stress. 

Strain gages are used in transducers that measure force, pressure, and tension, and are often used providing stress analysis in structures such as airplanes, cars, machines, and bridges. 

When specifying strain gages one must consider the application variables, such as operating temperature, the state of the strain (including gradient, direction, magnitude, and time dependence), and the stability required by the application.

For more information about strain gages and load cells, contact AP Corp. Call them at 508-351-6200 or visit their web site at

Check Out the Current AP Corp. Line Sheet

AP Corp. represents the top manufactures of industrial sensors and instrumentation. Product categories include Analyzers, Color Sensors, Displacement Sensors, Flow Sensors, Instrumentation (Data Acquisition), Load Cells & Instrument Hardware, Machine Controls, Pressure Gauges, Pressure Sensors, Sanitary Sensors, Sound Sensors, Strain Gages, Temperature Sensors, and Vibration Sensors. As one of New England's and New York's premier Manufacturer's, AP Corp. will assist you in selecting the perfect sensor for your application.

Check out the AP line sheet by reviewing the embedded document below, or you can download a PDF line sheet from this page on the AP Corp. web site.

AP Corp.
(508) 351-6200