Electronic Balance Weighing Unstable Solution(part 1)
Lab Electronic Balance generally USES strain sensor, capacitive sensor, electromagnetic sensor. Strain sensor, simple structure, low cost, but limited precision, currently can not do very high precision; Capacitive sensors have high weighing speed and high cost performance, but they cannot achieve high accuracy. An electronic balance using an electromagnetic sensor. It is characterized by accurate and reliable weighing, quick and clear display, automatic detection system, simple automatic calibration device and overload protection device.
The precision of electronic balance makes it easy for us to have various faults in use. The most common problem we encounter is often the instability of the weighing results. Is it the electronic balance? How should we judge these problems, how should we carry on the electronic balance breakdown to solve?
The following Analytical Balance Supplier summarizes several common unstable weighing results:
(1) the sample water content increases or loses
The sample may be volatile or absorb water, which may cause the actual mass of the sample to increase or decrease. In this case, our general solution is to use a small vessel. In this way, the moisture in the sample is not easy to evaporate, making the weighing result more accurate.
(2) electrostatic phenomena of samples and containers
Static electricity may also cause unstable weighing of electronic balance. Materials with high insulation (such as most glass or plastic weighing containers) are easy to be electrostatized. At this time, we can consider using metal containers. Make the repeatability of weighing better.
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