Drift problem

I heard that it’s unavoidable; it seems possible to minimize its impact, with environmental temperature having a significant effect. I also heard that about this – I’d better ask those who are more experienced for details

So I heard that the product quality of that company is better, and the drift isn’t that severe?

Generally, if you can’t solve the problem no matter what you try, it’s usually an issue with the instrument itself. When we experience baseline drift, leaving it stable for a while often helps a lot. Additionally, baseline drift tends to occur during programmed temperature changes.

What instrument is the author referring to, and what kind of drift is taking place? Some drifts can be improved, while others have little impact on the analysis results. Of course, there are also unavoidable drifts; only once the original poster explains them can we help think of solutions.

Take a look to see if there is any power interference in the surroundings, and whether there is a voltage stabilizer

5# fengxuemei What I’m mainly talking about is the hydrogen analyzer!

Increase the measurement time and number of measurement points, and perform standard curve calibration

It’s been such a long time since I got a reply; I almost forgot about it. I’m not very familiar with online hydrogen analyzers either; I’ve compiled the information I found here for reference only: Hydrogen analyzers generally operate on the principle of a thermal conductivity cell. Such instruments are quite stable and do not require frequent calibration. If the signal from your instrument shows significant drift, then please check whether there are any issues with the way it is being used. For online hydrogen detection, whether to use a catalytic combustion type depends on the situation; if it is used for explosion detection, a catalytic combustion device can be employed. If measuring concentration is the goal, catalytic combustion is not used. Since the medium used is not very dry, the gas often contains some water vapor, which may have certain effects. Therefore, for gas analysis, special attention must be paid to the pre-treatment device; yes, particular attention is required for the pre-treatment device, and gas calibration using standard concentrations should be employed. Generally, the gas inlet should have a desiccant container that needs to be replaced frequently. If you have a lot of moisture, you might consider a dehumidifier.

Instrument drift is generally caused by environmental factors; the more advanced and precise the instrument, the greater the impact of the environment. Some instruments have strict requirements regarding the environment, such as temperature – they will issue an alarm or stop working if the temperature falls outside a certain range, or abnormal data may appear. Additionally, it could be due to issues with the instrument itself; in that case, it would be necessary to contact the instrument manufacturer for consultation.