How to Choose the Correct Load Cell Amplifier

A load cell amplifier is a critical component of any load cell system, as it provides the excitation voltage to the load cell and amplifies the tiny signal that the load cell produces. While there are many different types and models of load cell amplifiers available on the market, choosing the correct one for your application can be a daunting task. In this blog post, we will explore how to choose the correct load cell amplifier for your application. We will discuss the different types of amplifiers available and their features, as well as some tips on how to make sure you select the best amplifier for your needs.

Consider the Load Input Direction

When choosing a load cell amplifier, it is important to consider the input direction of the load. The input direction is the direction in which the force is applied to the load cell. The three most common input directions are compression, tension, and shear.

 Compression load cells are designed to measure force in a downward or compressive direction. These types of amplifiers are commonly used in scales and weighbridges. Tension load cells are designed to measure force in an upward or tensile direction. Shear load cells are designed to measure force in a horizontal or lateral direction. 

 The input direction of the load will dictate the type of amplifier you need. Be sure to take this into consideration when making your selection.

load cell amplifier

Think About the Setting the Load Cell Will Operate In

When choosing a load cell amplifier, it’s important to think about the specific setting in which the load cell will be operated. Different settings will have different demands in terms of accuracy, precision, and other factors. For example, a laboratory setting might require a very different amplifier than one used in an industrial setting.

 Some things to keep in mind when thinking about the setting include:

 -What kind of environment will the load cell be used in? Will it be outdoors? Indoors? In a cleanroom?

 -What are the temperature and humidity conditions like?

 -What is the level of vibration present?

 -How much space is available for the load cell and amplifier?

 All of these factors can impact the type of load cell amplifier you need to choose for your application. By taking the time to consider all of them, you can ensure that you select an amplifier that will meet your needs and provide accurate results.

Consider the Object to be Weighed: Capacity, Resolution, Shape

When choosing a load cell amplifier, you must first consider the object to be weighed. The capacity of the load cell amplifier must be greater than the maximum weight of the object to be weighed. The resolution of the load cell amplifier should be high enough to accurately weigh the object. The shape of the object will also affect the accuracy of the weighing.

Select the Load Cell Type for the Application

There are many types of load cells on the market, each with its own advantages and disadvantages. The most common type of load cell is the strain gage load cell, which uses resistance to measure force. Strain gage load cells are very accurate and durable, but they can be expensive.

 If cost is a concern, another option is the capacitive load cell. Capacitive load cells work by measuring the change in capacitance when a force is applied. These devices are less accurate than strain gage load cells, but they are much less expensive.

 Finally, there are piezoelectric load cells. These devices use the piezoelectric effect to measure force. Piezoelectric load cells are very accurate, but they can be expensive and fragile.