Online, Inline, Atline, and Offline Analysis: What’s the Difference?
Particle size analysis is a critical technique in various industries, providing valuable insights into product quality and process control. Laser diffraction is a popular method for measuring particle size distribution, offering accuracy and efficiency. However, the choice of measurement location can significantly impact the data’s relevance and real-time applicability. In this article, we’ll explore the differences between online, inline, atline, and offline analysis.
Online Analysis
Online analysis involves extracting a representative sample from the process line and introducing it to the measurement zone. The measurement conditions closely resemble those of the process, making it suitable for dense phase flow with high particle concentrations. After measurement, the sample can either be discarded or returned to the process line.
A prime example of an online particle size analyzer is the Insitec. Designed for continuous, real-time measurement, the Insitec range offers high accuracy and precision, making them ideal for applications requiring immediate feedback and process optimization.
Inline Analysis
Inline analysis integrates the particle size analyzer directly into the process line, allowing for measurements under actual process conditions. The sample flows continuously through the analyzer, making it well-suited for lean phase flow with low particle concentrations.
Insitec is a leading inline particle size analyzer, providing continuous, non-invasive measurement and enabling real-time process monitoring and control. The Insitec is particularly valuable in applications where product quality is highly sensitive to particle size distribution.
Atline Analysis
Atline analysis involves manually or automatically extracting a sample from the process line and transporting it to a nearby particle size analyzer. This method offers flexibility and can be used to monitor multiple process lines sequentially. However, it may introduce some delay between sampling and measurement.
Offline Analysis
Offline analysis entails collecting a sample from the process line and transporting it to a laboratory for measurement. This approach provides a high degree of control over measurement conditions but can introduce delays and may not capture transient changes in the process.
Choosing the Right Method
The optimal analysis method depends on factors such as the process requirements, the desired level of real-time data, and the complexity of the sample. Online and inline analysis are ideal for continuous process monitoring and control, while atline and offline analysis are more suitable for occasional checks or when sample preparation is necessary.
By understanding the differences between online, inline, atline, and offline analysis, you can select the most appropriate method to meet your specific particle size measurement needs and ensure optimal process efficiency and product quality.