Interface defines creep, an important accuracy specification for load cells, in the essential 101 Series. When a force is applied to a solid material within its elastic limit, the resulting deflection will subtly increase over time if the force is held constant. This phenomenon, known as creep, is not permanent but recoverable. It's important to note that the signal from a load cell exhibits this creep, making it a key consideration in all load cell applications.
Every Interface LowProfile load cell is moment compensated to minimize sensitivity to extraneous loads. Moment compensated load cells are designed to counteract the external forces or moments by using a configuration of strain gages and electronics that can detect and compensate for these forces. The strain gages are arranged in a way that allows the load cell to measure the force applied to it in multiple directions, and the electronics can then use this information to calculate the impact of external forces and moments on the measurement.
It's important to understand how the the environment will impact output when choosing a load cell. Temperature compensation is a top consideration. What is the temperature effect on zero for the load cell?
ConvexBT is a first of its kind load button load cell, providing better temperature resistance and more enhanced eccentric load rejection. Miniature load cells categorized as load buttons have been sensitive to off-axis, eccentric or misaligned loads.
Interface proprietary strain gages compensate for temperature, an environmental factor that can drastically affect the accuracy of force data.
2019 Load Cell Field Guide from leaders in force measurement solutions provides in-depth information for understanding and using load cells and strain gages to accurately measure force. The book is on Amazon and is the ultimate tool for engineers and students.
Load cells and piezoelectric sensors are used in all types of measurement applications. Interface load cells are high accuracy, durable sensors that measure the amount of force or weight being applied to them. The amount of force is numerated by the capacity of the model design, such as 50lbf (pounds-force) or 5kN (kilonewton). Piezoelectric sensors work on the principle of piezoelectricity. They are made of materials that generate an electric charge in response to mechanical stress, such as pressure or vibration.
Interface's technical white paper explores extending a transducer calibration range by extrapolation when full capacity is not an option. Engineers and test labs benefit from this technical discussion.
