Helium is primarily used to calibrate the dead volume of the sample tube. This technique is also known as helium gas quantification. The accuracy of the sample tube's volume directly impacts the reliability of the instrument's test results. Before the introduction of helium gas quantification, instrument designers typically relied on manually setting the volume value of the sample tube within the software. All calculations were based on this fixed value. However, this method had several limitations that could lead to inaccuracies:
1. Sample tubes were often handmade, making it difficult to achieve consistent volume across multiple units. This lack of standardization affected the repeatability of measurements.
2. During each test, variations in material and sample volume could cause changes in the effective volume of the sample tube. As a result, using a fixed volume value became unreliable over time.
3. For testing samples with low specific surface area, a glass packing column was often installed inside the sample tube. The combined errors from both the sample tube and the packing column would distort the final test results.
With the implementation of helium gas quantification technology, the effective volume within the sample tube can now be measured accurately. This advancement significantly improves the precision and consistency of analytical testing, ensuring more reliable and trustworthy data for scientific research and industrial applications.
Portable Cable Crimpers,Wire Stripper Crimper Pliers,Wire Stripping Machine Electric,Wire Stripping Pliers
Kunshan Bolun Automation Equipment Co., Ltd , https://www.bolunmachinery.com