Views: 0 Author: Site Editor Publish Time: 2022-06-06 Origin: Site
With so many load cell design styles out there, it can often be difficult to decide which type of load cell is right for you. To help you get started, we've put together this guide to differentiate between the types of load cells and the most common ways and uses for each load cell.
S Type Load Cell
S-type sensor is the most common type of sensor. Because of its shape similar to "S", it is called S-type sensor. It is mainly used to measure the tension and pressure of solids. It can be used singly, or multiple outputs can be used at the same time.
Shape: S-shaped spring element.
Force direction: the geometric center, the force perpendicular to the horizontal axis.
Strain Gauge Placement: Applied to the inside of the circle machined inside the load cell, placed parallel to each other to measure bending strain.
Single Point Load Cell
Single-point load cells are low-range and high-precision load cells. The shape is like a square, and the measurement results are accurate and reliable. It is widely used in electronic scales, kitchen scales, jewelry scales and other fields. It is an indispensable core component in industrial and agricultural automation systems.
Shape: Horizontal rectangular "beam" shaped spring element with parallelogram structure.
Force direction: perpendicular to the horizontal axis, the force is applied to the beam end opposite the fixed (installation) end.
Strain Gauge Placement: The top and bottom of the beam on the outer surface of the parallelogram, parallel to each other, to measure bending strain.
Bellows sensor
① Bellows (bending beam) load cell: very suitable for low-range container weighing and process weighing.
Shape: Horizontal rectangular "beam" shaped spring element.
Force direction: perpendicular to the horizontal axis, the force is applied to the beam end opposite the fixed (installation) end.
Strain Gauge Placement: The top and bottom of the beam, perpendicular to each other measure bending strain (usually covered by bellows to protect the gauge).
②Beam load cell: the most suitable sensor for low and medium range weighing, especially for tank weighing and low profile process applications.
Strain gauges are glued to both sides of the beam at a 45° angle
Force direction: perpendicular to the horizontal axis, the force is applied to the beam end opposite the fixed (installation) end.
Strain Gauge Placement: Glued on both sides of the beam at a 45° angle to measure the shear strain of one cross-section of the spring element.
Spoke Load Cell
The circular plate type load cell is specially designed for users of medium and large range weighing to provide a sensor suitable for narrow places. They can be installed between two components for compression, or through threaded holes for tension. Disc-type load cells provide accurate results even with off-axis loading.
The strain gauges are glued to the arms of the elastic element at a 45° angle
Shape: Ground contoured cylindrical hub with multiple beam "arms" attached to the outer body.
Direction of force: perpendicular to the horizontal axis, the force is applied to the geometric center of the element to which the beam arm is connected.
Strain Gauge Placement: Glued to the arms of the spring element at a 45° angle to measure shear strain.
Load Pin
The load pin replaces the pin or shaft that applies the force. The design and construction of these sensors are highly customizable and can be adapted for use in a wide range of environments.
Strain gauges are placed in designated areas and bonded at a 45° angle
Shape: bar spring element.
Force direction: The central part of the spring element, which applies force perpendicular to the horizontal axis.
Strain Gauge Placement: Glued at a 45° angle at a designated area on the spring element to measure shear strain.
Column Load Cell
Column load cells are the earliest load cell designs. Column load cells can be used for compression or tension and are especially suitable for high-range applications. The heavy-duty nature of the design resists bending and deformation unless improperly loaded. Column load cells are commonly used on truck and rail scales.
Strain gauges are placed inside the sensor post or post
Shape: Cylindrical spring element.
Force direction: the geometric center, perpendicular to the horizontal axis.
Strain Gauge Placement: A post or column placed inside the load cell, placed at a 90° angle, to measure axial and transverse strain.
