How to choose the right weight sensor for electronic belt scales?

Electronic belt scales are metering instruments for continuous dynamic weighing of bulk materials in the industrial sector. Their main components include weight sensors, speed sensors, scale frames, and instruments. The stability, precision, and durability of each component contribute to the performance stability and high precision of the electronic belt scale itself.

When using an electronic belt scale for metering, the first issue to address is how to select a suitable weight sensor based on the established metering purpose, weighing object, and operating environment. Once the weight sensor is determined, the matching measurement method and belt scale model can be decided. Today, let's discuss the selection of weight sensors.

1. Select the Appropriate Measurement Range

Before choosing a weight sensor, determine the characteristics and flow rate of the object to be weighed, and select a suitable measurement range based on the maximum weight. If the selected range is too small, the sensor may be damaged due to overload during use. If the range is too large, the required metering accuracy may not be achieved. For electronic belt scales, the normal force measurement value should be 60%-70% of the full measurement range.

2. Choose Suitable Sensitivity and Anti-Interference Capability

Generally, to obtain accurate weighing signals, the higher the sensitivity of the weight sensor, the better. High sensitivity results in a relatively larger output signal value for the measured change, which is beneficial for signal processing and achieves higher metering accuracy.

However, it should be noted that higher sensor sensitivity also makes it more susceptible to external environmental interference, such as vibrations from large equipment. These interference factors can be amplified due to sensor sensitivity and affect metering accuracy. Therefore, when selecting a high-sensitivity weight sensor, the interference factors in the operating environment cannot be ignored, and a sensor with strong anti-interference capability should be chosen.

3. Select the Appropriate Linear Range

The linear range of a sensor refers to the range where the output is proportional to the input. Theoretically, sensitivity remains constant within this range. A wider linear range of the sensor results in a larger measurement range and ensures corresponding measurement accuracy.

4. Sensor Stability

Stability refers to the ability of the sensor to maintain its performance over time. Apart from the sensor's structure and quality, the operating environment is also an important factor affecting its stability. Therefore, when selecting a weight sensor, apart from considering its structure and quality, it is also necessary to inquire about its environmental adaptability, such as its ability to withstand harsh environments and maintain stable operation and accuracy in changing environments.

For sensors used in special environments, corresponding special process treatments are required. For example, sensors used in underground coal mines require explosion-proof treatment, while those used in corrosive environments require rust prevention treatments.

5. Choose the Appropriate Accuracy

Accuracy is an important performance indicator of weight sensors and is closely related to the metering accuracy of electronic belt scales. Naturally, sensors with higher accuracy come with higher prices. However, for sensors, it is important to meet the metering accuracy requirements rather than blindly pursuing high accuracy.

In addition to the above factors, the specific usage requirements should also be considered in selecting weight sensors, such as choosing a suitable price and source (domestic or imported) based on the budget. Furthermore, if only the weight sensor is being replaced, it is necessary to ensure compatibility with the existing belt scale.

Only by considering and selecting a weight sensor that matches the requirements from various aspects can the overall performance and user experience of the electronic belt scale be improved.

Guonuo Technology's electronic belt scale weight sensors can be customized according to customer needs, including measurement range, accuracy, special process treatments, etc. They are characterized by high accuracy, strong environmental adaptability, and long service life, contributing to the improvement of the overall performance and accuracy of electronic belt scales and extending their service life.