Industrial gases commonly stored in this fashion include liquid oxygen, liquid nitrogen, liquefied chlorine, liquefied natural gas and liquefied petroleum gas. Liquefied gas plays a role in the ethylene industry as well. Feedstock to an ethylene plant’s fractionation towers contains a liquid cryogenic hydrocarbon mixture as a result of going through compression and refrigeration trains after the quench tower.
Magnetrol® has produced a brochure detailing different applications throughout the ethylene industry and exploring measurement challenges and solutions for each one. This blog post is part of an occasional series exploring each application in detail.
Liquefied Gas Level Measurement Challenges and Considerations
Above- or below-ground insulated storage tanks are built to specifically hold liquefied gases and minimize the amount of evaporation. Liquefied gas storage tank level monitoring typically contends with pressurization, extremely low temperatures and low dielectric media. Any instrument measuring liquefied gas must be able to produce an accurate, reliable reading in these challenging process conditions.
Level Measurement Solutions
MAGNETROL offers a range of level instruments for liquefied gas and cryogenic storage:
- Eclipse® Model 706 guided wave radar transmitter
- Pulsar® Model R86 pulse burst radar transmitter
- Echotel® 961 and 962 single and dual point ultrasonic level switches
- Aurora® or Atlas™ magnetic level indicator
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