二手 HITACHI S-4700 #9241883 待售

Scanning Electron Microscope (SEM) Resolution: 1.5 nm with 15 kV beam, 12 mm working distance 2.1 nm with 1 kV beam, 1.5 mm working distance Magnification: High mag mode: 100x - 500,000x Low mag mode: 20x - 2,000x Electron optics: Electron gun: Cold cathode field emission type Extracting voltage (Vext): 0 to 6.5 kV Accelerating voltage (Vacc): 0.5 to 30 kV Lens: 3-Stage electromagnetic lens Objective lens aperture: Movable aperture Self-cleaning thin aperture Astigmatism correction coil (stigmator): Electromagnetic type Scanning coil: 2-Stage electromagnetic deflection type Specimen stage: X Range: 0 to 25 mm Y Range: 0 to 25 mm Z Range: 1.5 to 26.5 mm Tilt range: -5 to 45 degrees Rotation: 360 degrees Spec. size: Maximum100 mm diameter Display options: Scanning speeds: Live viewing: 0.5 to 40 sec per frame Photo: 17 - 333 seconds per frame Electrical image shift: 15 um at 12 mm Evacuation system: Ultimate vacuum levels Specimen chamber: 7E^-4 Pa Electron gun chamber: 2E^-7 Pa at ion pump 1 Vacuum pumps: Electron optics: (3) Ion pumps Specimen chamber: Oil diffusion pump or turbo molecular pump (2) Oil rotary pumps Acoustic noise: Less than 65 dB Dielectric voltage-withstand: 1500 VAC/1 min Microscope control OS: Windows XP Does not include EDAX.