How to measure liquid level, temperature, and add liquid nitrogen to a self-made vacuum-insulated liquid nitrogen container
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This post was last edited by benz2020 on 2016-7-5 20:16. I plan to make a cylindrical container for liquid nitrogen, complete with a lid, and I need a level sensor (liquid nitrogen is at a very low temperature of -196 degrees Celsius; where can I purchase one?) ), or a float level gauge? Are there low-temperature sensors for temperature measurement in liquid nitrogen? Are the pipes for transporting liquid nitrogen available at Swagelok? If liquid nitrogen is poured directly into the container, will it evaporate immediately upon contact with air? Is it much better to use a liquid nitrogen pipeline for delivery?
Doing it yourself is not cost-effective and involves risks; usually, revisions are needed for the first attempt, mainly due to inadequate planning during the design phase. So it’s better to simply buy a thermal container or Dewar flask.
Which brand offers high-quality insulated containers or Dewar flasks?
There is a strong relationship between the temperature and pressure of liquid nitrogen; one can look at the saturated vapor pressure of liquid nitrogen along with its temperature. Just because the liquid level is not 0 does not mean that the average temperature inside it is -196 degrees Celsius~~
If it’s open, a level gauge isn’t necessary~~ For small Dewar vessels, capacitive level gauges are generally used, while double-flange level gauges are employed for low-temperature storage tanks~~
I’ve learned something – the moderator has truly excellent professional skills; they seem to know everything