FP-1

The FP-1 consistsof a large platform, two or three Minus K廬 SM-1negative-stiffness vibration isolators, outriggers which connect the platformto the isolators, isolator floor and jack screw plates which help to spread theload on the floor and ballast weights.

The FP-1 platformis a heavy steel plate which typically weighs nearly as much as the microscopeitself. One reason for this design is to lower the overall system center ofgravity to the level of the isolator tilt mechanism, so as to avoidhorizontal-tilt coupling, which occurs when horizontal vibrations cause both ahorizontal and tilting response of the column. With the system CG at the levelof the isolator tilt mechanism, the vibrations are decoupled and better isolationcontrol is achieved. Another reason for the massive platform is that the largetotal mass of the system helps to diminish any effects from stiff cables andhoses connected to the microscope.

LEO 1550 SEM on atwo-isolator floor platform

For SEMs and someTEMs only the column console is isolated. In some cases the column, display andother components are isolated on the platform.
The system can achieve naturalfrequencies of 0.5 Hz or less, vertical and horizontal, with all external line,hoses and cables disconnected from the isolated payload and the internalisolators locked out. (with most microscopes the external lines, hoses andcables have a relatively small effect on the isolation system performance)

WITHOUTMINUS K VIBRATION ISOLATION

Give us yourlow frequency vibration isolation challenge

JEOL JEM-1400 TEM out of spec before Minus K's FP-1

Customers thatprefer to make the platform themselves can purchase the design, the SM-1 MinusK negative-stiffness vibration isolators and build the platform locally to savefabrication and shipping costs.

WITH MINUS KVIBRATION ISOLATION

This is a horizontal only FP-1 for a JEOL JEM 1400 TEM on a 5thfloor.

JEOL JEM-1400 TEM within spec with Minus K's FP-1

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FP-1

The FP-1 consistsof a large platform, two or three Minus K廬 SM-1negative-stiffness vibration isolators, outriggers which connect the platformto the isolators, isolator floor and jack screw plates which help to spread theload on the floor and ballast weights.