How to measure the oxygen content in the water in the deaeration tank
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The pressure inside the deaeration tank is 0.8 MPa, and the temperature is 175°C. I want to test the oxygen content in the water. Are there any instruments available for this purpose? If a dissolved oxygen meter is used, does it need to be possible to control the temperature of the water fed into the instrument? Does the water temperature affect the oxygen content in the water?
For gases, as the temperature rises, their solubility decreases; in other words, the higher the temperature, the lower the oxygen content.
Cool and depressurize the sample to an appropriate range, and then it is advisable to measure it using an online dissolved oxygen analyzer.
Will this affect the values, after all, the temperature is so high during deoxygenation?
It can only be said that you are ignorant regarding the analysis of dissolved oxygen
I really know nothing about dissolved oxygen analysis; I have no idea at all. Could you explain it to me?
There probably isn’t any dissolved oxygen meter capable of measuring water samples at such high temperatures. That dissolved oxygen probe broke as soon as it was put in. There are probes that can withstand high temperatures, but it seems none of them can handle temperatures as high as 175 degrees. Therefore, the correct approach is to cool down to room temperature before taking the measurements, and it is essential to ensure that external oxygen does not penetrate in and affect the measurements.