What about static electricity? What about airflow impact? And look at the weighing application

Weighing is an important step in the experimental operation, and weighing data as the underlying data is the basis for obtaining the final correct result. So how do you get accurate weighing results? Undoubtedly the correct operation, high-quality balance, and good environment are indispensable. However, due to the limitations of application conditions, many times we can not get the ideal weighing environment. Let us look at the application cases of the balance in the following special environmental conditions. Does it have any inspiration for your work?

1. Strong static interference environment <br>In the abnormally dry environment, the weighing of powder samples and the weighing of filter papers, static interference is often encountered. Under the action of static electricity, the balance reading is difficult to stabilize, and the performance is continuously increasing or decreasing, which is difficult to obtain. Accurate results. Static electricity is actually a phenomenon in which the positive and negative charges of atoms are unbalanced due to changes in energy (such as kinetic energy, thermal energy, chemical energy, etc.) caused by friction under external influence. Friction is inevitable in daily operations, so static electricity is also inevitable, then we can only eliminate the effects of static electricity by exporting or shielding as soon as possible.

In addition to ensuring proper humidity, some users apply a metal sample cell in order to derive static electricity as quickly as possible. However, some users cannot choose weighing containers, such as users who use filter paper weighing. Many of them use special weighing chambers, such as special metal and half-high weighing chambers, which can effectively extract static electricity and reduce airflow. interference.

In addition, some users have applied external static elimination equipment to eliminate the effects of static electricity. For example: static elimination pen. The static elimination pen is suitable for small sample containers and filter papers, and is a convenient, effective and economical choice. Some users who use older models of balances use ionizers to shield static charges when weighing larger samples. Users using modular Cubis balances are more convenient to directly apply the windshield with electrodes on the backplane to form a stable electrostatic field to shield static interference.

2. Impact of unstable airflow environment:
Some users' weighing environments are susceptible to unstable airflow, such as frequent personnel access and weighing of toxic and hazardous substances in a fume hood. Chengdu has a company that produces tungsten wire and molybdenum wire. Every day, more than 5,000 samples randomly selected must be inspected. The inspection personnel enter and exit the balance chamber very frequently, and the weight of the sample is light and the tolerance is very small. The user selected the Sartorius ME5 balance after multiple comparisons. The balance has electric airflow protection measures, and the weighing room door can be adjusted to the leeward direction at will. Moreover, the user added an extra hood outside the balance to create a partially stable environment. Solve the problems that have plagued them for years.

Weighing in a fume hood is a typical case of interference from airflow. Now, in terms of preventing the influence of airflow, there are new applications. For example, some users have applied the safety weighing cabinet SWC, which constructs a closed area around the laboratory balance, which can effectively prevent any air or fine powder particles from overflowing, while the airflow rate in the cabinet is constant and low turbulence, which can guarantee Consistent and repeatable weighing results. A grid balance using a grid-like weighing plate is also a good application case for reducing airflow interference. Experiments have shown that such a grid balance can effectively be used even without a hood with a readability of 10 mg and 100 mg. Prevent airflow interference.

There are still many applications in eliminating static interference and reducing airflow interference. The so-called Eight Immortals cross the sea. I don't know what kind of application you have, you are welcome to participate in the "Weighing Endless, Motivation No Limits - Laboratory Balance Application Case Awards Contest" is looking forward to your sharing! Don't ignore your little app, maybe it can change the experimental life of thousands of people!

If you have any questions about adapting to special weighing conditions, please feel free to contact us!

Immediately participate in the balance application case collection activity

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