Room Temperature / Airflow Countermeasure
Room Temperature Control
In order to realize the full potential of high-performance scientific instruments, such as atomic-resolution electron microscopes, it is necessary to maintain a high level of stability of the operation environment, including room temperature variation, air flow and acoustic noise. JEOL has developed a unique and optimal room temperature control system for atomic-resolution electron microscopes, which has been highly praised by many users.
Principles of Hydro radiant panel temperature control systems
Left:Schematic figure of system / Right:Surface temperature distribution on the panel
Cooling water from a dedicated, high-precision chiller flows within the several radiant cooling panels that are installed on the walls of the instrument installation room. The natural convection flow and the radiant cooling eliminate the heat generated by the instrument. Compared to an ordinary air conditioning system, the temperature stability is surprisingly better, with almost no air drafts or noise, creating the ideal environment for the operation of an atomic-resolution electron microscope.
Temperature change/ airflow specifications for JEM-ARM series
| Room temperature | 15～25 °C |
|---|---|
| Drift | 0.2 °C /h or less |
| Fluctuation | 0.05 °C /min or less |
| Air flow | 100 mm/s or less |
Sample temperature variation data
Temperature change comparison Blue: Ordinary air conditioning, Red: Radiant cooling
Example of installation
Case of actual installation
JEM-ARM200F Demo unit at JEOL R&D building
Hydro radiant cooling panel＊a product of PROTOTECH Inc
Installation room consulting and preparation
JEOL Advanced Environmental Engineering Center can handle all the preparation work for the installation room, including construction, interior finishing, electrical, air conditioning, facilities, and seismic resistance, in order to satisfy the environment requirements for the instrument. We offer solutions to take full advantage of the instrument performance, proposing the optimal construction matched to the customer requirements.
Installation room for JEM-1400Plus
200kV TEM installation room