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用于SEM的主动式压电陶瓷振动消除地板式平台
STACIS iX SEM-Base主动式压电陶瓷地板式隔振平台是专为扫描电子显微镜所设计的。扫描电子显微镜是振动*敏感的仪器，而且这些精密仪器都有内置的隔振系统，SEM-Base可以兼容SEM内部预装的振动隔离系统。
SEM-Base是可以替代65系列STACIS 2100地板式平台的简洁且性价比高的选择。它集成了STACIS技术但是外形更小，且安装更加简单。
SEM-Base可以从低于1Hz开始隔离振动。SEM-Base只有6.5in.高，底座尺寸是35.5in.x44.5in.，自重约为650磅，可以支撑900磅（409kg）到2500磅（1134kg）的负载。
特性：
1、包含STACIS技术
2、主动的内部振动消除装置
3、适合大部分商业SEMs。（35.5*44.5*6.5inch）
4、负载容量：900-2500lb
5、振动消除起始频率小于1Hz
6、六自由度
8、安装容易
9、兼容所有内置振动隔离系统
10、非气浮系统
11、简单，鲁棒性好，性价比高
12、可安装脚轮，轻松携带移动，不需要搬运
Specifications-
Performance Specifications
Active degrees of freedom | 6 |
Active bandwidth | 0.6 Hz - 100 Hz |
Passive natural frequency | 12 Hz nominal |
Effective active resonant frequency | 0.5 Hz |
Isolation at 1 Hz | 40% - 70% |
Isolation at 2 Hz | 90% |
Isolation at ≥3 Hz | 90-98% |
Internal noise | <0.1 nm RMS |
Operating load range | Standard capacity: 900 - 2，500 lbs (408 - 1134 kg) High capacity: 2，500 - 3，200 lbs (1134 - 1452 kg) |
Static lift capacity | 12，000 lbs (5454 kg) |
Magnetic field emitted at maximum 4 in.(102 mm) from the platform | <0.02 μG broadband RMS |
Design， Dimensions， and Environmental and Utility Requirements
Environmental and safety | CE and RoHS compliant |
Active isolation elements | high-force piezoelectric actuators that receive signal from a high-voltage amplifier with an output of up to 800 VDC |
Passive isolation element | single stiff elastomer (no compressed air supply required) |
Vibration sensor elements | downward facing geophone type inertial sensors that measure floor vibration below the isolator and deliver voltage proportional to the velocity of vibration motion |
Active feedback control loop | Floor vibration is measured， processed and attenuated below the spring supporting the isolated surface |
Dimensions (WxD) | 35.25 x 44.25 in. 895 x 1124 mm |
Height | 6.3 in. (160 mm) nominal， doesn't change when SEM-Base is switched off |
Operating temperature | 50° - 90° F 10° - 32° C |
Storage temperature | -40° - 130° F -40° - 55° C |
Humidity (operating) | 30 - 60% |
System power requirements | 100， 120， 230， 240 VAC 50/60 Hz AC; <600 w CE compliant |
Floor displacement | <800 μin. (20 μm) below 10 Hz |
Built-in Controller Specifications
Processor | 150/75 MHz dual core |
Sampling rate | 10 kHz |
Analog outputs | 16 channels |
Analog inputs | 16 channels |
Status light | single LED |
Front panel ports | 1x serial USB 2.0 1x serial Micro-USB 1x Ethernet RJ-45 2x BNC |
User interface | Front panel LCD display Character menu on HyperTerminal Extended GUI for Microsoft Windows Embedded Ethernet GUI |
Performance-
1800 lbs (818 kg) payload tested with simulated vibration at VC-C (500 μin./s， 12.5 μm/s RMS)
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