Use a Metal Jacket on the Sample Tube

A two-piece metal jacket is included in the accessories kit to use when performing analyses at temperatures above ambient. The jacket helps to maintain strictly decreasing temperatures from the instrument to the sample in order to prevent condensation in the portion of the tube above the sample. The sample may be degassed with the jacket in place. Install the jacket on the tube before attaching the sample tube to the sample port.

  1. Wear latex gloves and place a retaining O-ring onto the sample tube. Slide the O-ring toward the bulb.
  The O-rings for the metal jacket are larger than the ones for the sample port. Do not attempt to use sample port O-rings for retaining the jacket, or vice versa.
  1. Position both sides of the metal jacket on the sample tube and slide the O-ring into the lower groove of the jacket.
  2. Slide the other O-ring onto the top of the sample tube and into the upper groove of the jacket. The top of the jacket should be approximately 3 cm (1 in.) from the top of the tube to allow for installation in the sample port

  1. Attach the sample tube to the sample port.
  2. Gently slide the jacket upwards until it touches the sample tube connector nut.
 
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