Selection and use of cold exchangers for ammonia synthesis and ammonia level gauges?
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Measuring and controlling the temperature in the cold exchanger for ammonia synthesis as well as the ammonia liquid level is quite difficult. Due to the high pressure and the presence of internal components in the equipment, a pressure difference is created; ordinary pressure transmitters cannot be used in this context. Please share your experiences regarding how your respective units handle this issue.
We are using plug-in capacitive level gauges, and they work quite well
We use both radioactive sources and capacitive level gauges, but neither is accurate; the difference between the two instruments is around 30%, which severely affects the regulation performance.
Reply to 2# GAOLIJUN: Hello! Is there a port provided in the design of your ammonia capacitive level gauge for this purpose? Could you send me a photo of the location on site? Our company uses differential pressure level gauges with pressure guide tubes, and their readings are very inaccurate
The relationship between differential pressure and density is too strong; unstable density leads to fluctuating levels