Degas the Sample
Unit [n] > Start Degas
Most solid materials absorb moisture and other contaminants when exposed to the atmosphere. The sample must be clean before an analysis is performed. The degassing process involves heating the sample and placing it under vacuum to remove moisture and other contaminants.
Degas the Physical Adsorption Sample
- While holding the degas port plug, remove the connector nut and plug from the degas port by turning the connector nut counter-clockwise.
- Place the degas port connector nut, ferrule, and O-ring onto the sample tube set.
The Seal Frit is for 1/2 in. sample tubes only. When using a 1/4 in. or 3/8 in. sample tube, the Seal Frit opener must be removed from the sample connector |
- Remove the rubber stopper from the sample tube and attach the sample tube set to the degas port.
- Push the sample tube in to a full stop.
Mounting the sample tube at an angle might break the tube and cause injury. |
- Secure the sample tube in place by sliding the connector nut, ferrule, and O-ring up to the degas port and turning the connector nut clockwise.
- Tighten the connector nut securely by hand.
Never use a tool to tighten the nut; doing so may cause the sample tube to break. |
- Place a heating mantle over the sample tube bulb and secure the mantle in place with a mantle clip.
- Securely insert the heating mantle thermocouple plug and thermocouple power plug into the thermocouple outlets on the analyzer.
- Degas the sample.
- After degassing, transfer the sample tube to the analysis port. See Transfer a Degassed Physical Adsorption Sample to an Analysis Port.
Degas the Chemical Adsorption Sample
- While holding the degas port plug, remove the connector nut and plug from the degas port by turning the connector nut counter-clockwise.
- Place the degas port connector nut, ferrule, and O-ring onto the sample tube set.
- Remove the rubber stopper from the sample tube and attach the sample tube set to the degas port.
- Push the sample tube in to a full stop.
Mounting the sample tube at an angle might break the tube and cause injury. |
- Secure the sample tube in place by sliding the connector nut, ferrule, and O-ring up to the degas port and turning the connector nut clockwise.
- Tighten the connector nut securely by hand.
Never use a tool to tighten the nut; doing so may cause the sample tube to break. |
- Ensure the exhaust tube of the sample tube has been capped.
- Place a heating mantle over the sample tube bulb and secure the mantle in place with a mantle clip.
- Securely insert the heating mantle thermocouple plug and thermocouple power plug into the thermocouple outlets on the analyzer.
- Degas the sample.
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