Interruption of gas supply

Test procedure:

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 and monitor the relative humidity. 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 Gas Dosing Controller is turned off to interrupt the gas supply. The glove box and the transfer chamber remain closed tightly until the end of the test. The curves show the relative humidity versus time.

Results:

Through the aeration tubing, there is a slight air exchange despite the Gas-saving Valve. After approx. 1 hour, the relative humidity is approx. 20%, after more than 14 hours the relative humidity is at the same level as the ambient air. Despite the short-term missing power supply, the atmosphere inside the workspace of the glove box is only slightly influenced.

Interruption of gas supply - glove box

Unterbrechung-der-Gaszufuhr-Handschuhbox-Eng

analytica 2022

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