Patent ID: 9027609
Filing Date: 2015-05-12
Classification: F01D,F05D,G01N

Abstract:
1. A controlled environment system comprising: a tank including a base, a sidewall extending from the base, and an access lid configured to connect to the sidewall, wherein the lid, base, and sidewalls form a sealed enclosure that prohibits the escape of gases contained therein; a level indicator positioned on the sidewall at a first height above the base; an oxygen sensor positioned at least equal to the first height; an inlet located at a second height that is less than the first height, wherein the inlet is configured to receive a fluid for filling the tank, wherein the fluid has a greater molecular weight than that of ambient air; a fluid filling system connected to the inlet, the fluid filling system configured to contain the fluid with a greater molecular weight than that of ambient air, the fluid filling system comprising: