How To Measure Gas Spring Force

Accurate measurement of gas spring force is essential for selecting the appropriate gas springs for various applications. Gas springs are widely used in industries such as automotive, aerospace, furniture, and medical equipment, where precise lifting capacities are crucial. Therefore, understanding different methods to accurately measure gas spring force becomes essential.

The force of gas springs determines their lifting capacity and can be measured in Newtons (N) or pounds-force (lbf). It is crucial to choose the right method for measuring gas spring force to ensure accurate readings for selecting the appropriate springs.

In this article, we will explore different methods to accurately measure gas spring force, delving into more details about each method.

Method 1: Load Cell

One of the most precise methods for measuring gas spring force is by using a load cell. A load cell is a device that converts applied pressure into an electrical signal, allowing for the measurement of force or weight. To measure the force of a gas spring using a load cell, it must be attached to the rod end of the spring.

When the gas spring is compressed, it exerts a force on the load cell. The load cell accurately measures this force and sends the information to a digital display or computer. This method is frequently utilized in laboratories and industries where precision is of utmost importance. However, it does require specialized equipment and may not be practical for non-laboratory settings.

Method 2: Spring Tester

Another method for measuring gas spring force is by using a spring tester. A spring tester is a mechanical device that compresses the gas spring and incorporates a built-in gauge to measure the force. To use a spring tester, the gas spring must be attached to the device and compressed to the desired level.

The gauge on the spring tester displays the force exerted by the gas spring, which can be measured in pounds-force or Newtons. This method is more accessible and affordable compared to using a load cell, making it suitable for field use. However, it is crucial to ensure that the spring tester is correctly calibrated and that the readings are consistent and accurate.

Method 3: Formulas

The simplest method for measuring gas spring force is through the use of formulas. The force exerted by a gas spring can be calculated using the following formula:

Force (N) = Pressure (Bar) x Effective Piston Area (m²)

To utilize this formula, you need to know the pressure of the gas spring and its effective piston area. The effective piston area refers to the cross-sectional area of the piston that moves inside the gas spring. This information can usually be found in the gas spring's datasheet.

Once the pressure and effective piston area values are known, the formula can be used to calculate the force exerted by the gas spring. While this method is simple and easy to use, it is not as precise as using a load cell or spring tester.

In conclusion, accurate measurement of gas spring force is crucial when selecting the appropriate springs for an application. Load cells and spring testers are the most accurate methods for measuring gas spring force, but they require specialized equipment. Alternatively, formulas offer a more accessible approach; however, they are less precise than load cells or spring testers.

Regardless of the method employed, it is essential to calibrate the equipment used and ensure that the readings obtained are consistent and accurate. By accurately measuring the force of gas springs, one can select the most suitable springs for the intended application, thereby ensuring optimal performance. Taking into consideration the importance of accurate measurements, it is essential for professionals working with gas springs to understand the different methods available and choose the one that aligns with their specific requirements and resources.