Opening and closing the door
Due to the constant gassing with nitrogen the relative humidity inside a glove box with transfer chamber is 15 %. A SICCO Gas Dosing Controller is connected during the lead in of nitrogen in order to control the gas supply. A SICCO Gas-saving Valve is connected to the outlet for aeration. In the Gas Dosing Controller, the attainable required humidity is adjusted to 10 %, the flow rate to 8 Liters / minute and the pressure reducer on the nitrogen bottle to 0,5 bar. The door of the working space is opened completely for 30 seconds, the transfer chamber is closed tightly during the test procedure. The curves show the relative humidity versus time.
The opened door causes an air exchange and thus the relative humidity inside rapidly increases to approx. 50 %. By closing the door the gas dosing controller starts working again and the work space is purged again with nitrogen. After approx. 30 minutes the initial value is reached again.
Opening and closing the door - glove box