Factors causing unstable chlorine pressure in electrolyzers

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Our factory uses 898 forced-circulation electrolyzers of the 15WT type for chlorine production. The chlorine pressure is not very stable. On the U-tube manometer on the chlorine side, the chlorine pressure fluctuates between 20 and 60; this value should be fine. But the frequency of fluctuations is high. Who can tell me what the reason is? Another key point is that just a couple of days ago, the chlorine pressure inside the electrolyzer remained almost at a constant level for about 20 seconds, which indicates that the external negative pressure was quite high. However, there was no obvious abnormality in the chlorine pressure on the main pipe. There are also no obvious abnormalities with the chlorine compressor (it’s just that the pressure at its inlet and outlet is not very stable usually). Can anyone tell me what causes this? Is there a problem with the central control instrument or the field instruments? Is there still air leakage in the pipeline? Is there still a problem with the chlorine compressor? The key issue is that the frequency of pressure fluctuations of chlorine gas inside the electrolyzer is high; I’m not sure whether the operation at your plant is stable or not! !