Post by yhbyhb4433 on Nov 1, 2018 10:04:22 GMT -5
Hello, for a TTP6 cryo measurement system (open cycle), is there a way to switch one end of the transfer line from a LN dewar to a LHe dewar? Since I need to make measurements anyway at temperatures from 300K to 78K, it's more economic to use LN. However, for temperature points lower than 78K, I need to use LHe. But I can't seem to disconnect the transfer line from the cryostat when it's cold due to the ice/frost formed around the connection. Therefore, I'm wondering if I can somehow switch the other end of the transfer line to a different dewar. Or if you have other suggestions for reducing the LHe usage (other than the ones already mentioned in the other thread), that would be helpful too. Thank you.
