The CryoGuard; new independent level controller
The CryoGuard is a new independent level controller which bypasses the normal automatic filling unit of a bio storage vessel, if the automatic filling unit fails the CryoGuard will detect via it's own level sensor a to high Ln2 level and it will cut of the main supply of liquid Nitrogen and thereby preventing over filling with liquid Nitrogen and lowering the risk of cross contamination. The CryoGuard cgenerates a local alarm which is visible via LED's on the unit and an audible signal. The unit also has normally open/ normally closed I/O contacts for remote alarm connection. The unit comes with its own NTC sensor, solenoid, alarm box and mains power supply.