vibration sensor calibration

AIR-BEARING Horizontal Shakers

Applications

The APS Dynamics series of Horizontal Shakers are long stroke, electrodynamic force generators, each coupled to a horizontal table. The shakers provide long stroke, low frequency excitation of accelerometers and other low frequency instruments and sensors. A vertical operation kit is available as an accessory.

Features

Air bearing guidance and support system carries test loads with very low cross-axis motion
Efficient electrodynamic driver produces sine, random or transient waveforms
Excellent waveform purity and dynamic range

Description and Characteristics

The Shakers consist of an ELECTRO-SEIS long stroke air bearing driver attached to a load mounting table and air bearing assembly. The shaker imparts transverse base excitation to items mounted on the table.

Static and dynamic loads normal to the the table surface are transferred through a large area precision air bearing to a rigid guide bar of rectangular cross section. The driver unit and guide bar assembly are mounted on a common rigid base, ensuring correct alignment of all moving parts.

The ELECTRO-SEIS driver unit employs permanent magnets and is configured such that the armature coil remains in a uniform magnetic field over the entire stroke range ensuring a high degree of linearity. The self-cooled armature coil requires power from a matching power amplifier.

Specifications

	Model 129	Model 500
Force rating	30 lb, 133 N	20 lb, 90 N
Stroke rating	6.25 in, 158 mm	6 in, 152 mm
Load table size	10 x 10 in, 254 x 254 mm	3.13 x 3.13 in, 79.5 x 79.5 mm
Load attachment points	25	25
Total moving element weight	18.7 lb, 8.5 kg	2.4 lb, 1.1 kg
Maximum load weight	50 lb, 23 kg	6 lb, 2.7 kg
Matching Power Amplifiers	114, 124	124

APS Dynamics, Inc. is a subsidiary of SPEKTRA

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