Sample Tube Installation
Physical Adsorption Sample Tube Installation
If using... | Then... | ||
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A rubber stopper | Remove it. | ||
An isothermal jacket | Slide the jacket down over the stem of the sample tube until it touches the sample tube bulb. | ||
A filler rod |
Hold the sample tube horizontally and carefully slide the filler rod into the tube.
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- Loosen the connector nut on the P0 tube and rotate the P0 tube out of the way.
- If using a TranSeal and/or isothermal jacket, install it.
- Place the connector nut, ferrule and O-ring onto the sample tube stem.
- Insert the sample tube into the analysis port and ensure it is completely in the port. Securely hand tighten the connector nut onto the analysis port.
- Position the dewar cover approximately 3/4 in (19 mm) below the connector nut.
Chemical Adsorption Sample Tube Installation
Wear latex gloves when handling the sample tube. The natural oils in human skin can chemically damage and weaken the quartz tube. It is also important that the sample tube and its components, as well as the sample and exhaust ports, be clean and free of debris. Dust particles from quartz wool or the insulator disc of previous analyses may adhere to the port and/or components, preventing a proper seal of the sample tube. |
- Use a lint-free swab moistened with IPA and wipe the interior rims of the sample and exhaust ports.
- Use a lint-free tissue moistened with IPA and wipe the O-ring, ferrule, and connector nuts for the sample and exhaust tubes. Place on a lint-free tissue.
Sample and exhaust ports, as well as all components that contact the sample and exhaust ports, must be clean, therefore it is recommended that the previous steps be repeated each time a sample tube is installed onto a port |
- If using a hanging filler rod (recommended), hold the sample tube slightly tilted and carefully place the filler rod into the tube.
- Assemble and install the sample and exhaust tube components.
- Insert the assembled sample tube into the exhaust port.
- Slide the connector nuts up the stems and screw the nuts clockwise to secure the tube in place. Hand tighten both connector nuts until snug.
- Insert the temperature thermocouple into the thermocouple clip on the sample tube.
- Ensure the furnace is on the elevator shelf and manually raise the elevator using the instrument schematic. On the schematic, right click the furnace icon and select Raise to raise the elevator. If it is necessary to stop the elevator, right click the elevator icon again and select Stop.
- When the elevator reaches the top, insert the two furnace disk halves on top of the furnace opening. Place the first disk behind the sample tube and the second disk in front of the sample tube. Ensure the clip remains above the furnace disks.
- Install the safety shield to cover the furnace.
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