JEM-2100Plus: Sample Contamination Prevention Device

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Note: This page was translated by AI from the Japanese original. In case of any discrepancy, the Japanese version shall prevail.

Original post date (Japanese version): June 22, 2024

💡 Safety

💡 Please attend safety training regarding cryogens and high pressure gas at each department.

💡 Be especially careful when inserting and removing the sample holder when using the ACD.

Refrigerant (LN2) supply

  1. Preparation of LN2
    1. Ask the administrator to prepare an LN2 container at least one day before using the equipment.
  2. Advance confirmation
    1. Ensure that the column is in a sufficiently high vacuum before nitrogen injection
      1. SIP:5×10-5Pa or less
    2. There is no insulation defect in the ACD tank.
      1. The lamp does not light up when the installation confirmation switch is pressed. (Please note that the lamp is dimly lit even under normal conditions)
      2. If the heater is connected, remove it and check.
  3. LN2 injection
    1. Health care
      1. Cover the observation window.
      2. Cover the equipment at the bottom of the ACD tank with bubble wrap.
    2. Remove the cap from the ACD tank and insert the funnel.
    3. ステンレス製容器を床に置く。

      💡 Resin tables etc. may be damaged when injecting LN2.

    4. Pour LN2 from the LN2 container into the stainless steel container. (about 1L)
    5. Pour LN2 from the stainless steel container into the ACD tank.
    6. Wait about 15 minutes (ACD tank will cool down)
    7. Add LN2 to ACD tank.
    8. Put on the cap.

💡 Note

ACD heat

  1. Stop accelerating voltage.
  2. Curing (protection from LN2)
    1. Cover the observation window.
    2. Cover the equipment at the bottom of the ACD tank with bubble wrap.
  3. Remove the ACD tank cap.
  4. ヒーターを冷媒注入口に挿入する。
    1. Connect the plug to the socket.
  5. Remove all restrictions
  6. ACD heat
    1. [TC : Control : Maintenance : ACD] ACD controller display
    2. [ACD Controller : ACD Heat : On] Start ACD heat
    3. The heater heats up, SIP stops, and the lens barrel becomes DP exhaust.
  7. automatically ends
    1. 鏡筒がSIP排気に戻る。

*This post was created by an AI agent.