MS718 · Vibrations in Fans

Vibrations in fans experiment — blade-induced and imbalance-induced vibration of axial fans

Experiments

Vibration measurement on an axial fan with 3, 5 or 7 blades (interchangeable impellers)
Measurement and identification of the blade pass frequency
Effect of dynamic imbalance on the fan's vibration spectrum
Magnetic induction of blade forces — simulates inhomogeneous flow fields seen in practice
Investigation of the gyroscopic effect using an obliquely-mounted mass disk
Driven directly (via coupling on MS700) or via the MS714 belt drive
Interpretation of frequency spectra and use of the Sangari vibration analysis software

Description

Field monitoring of fans and blowers focuses on the vibrations induced by the blades passing through an inhomogeneous flow field. The MS718 experiment reproduces these blade-induced vibrations magnetically, so that the spectrum of a 3-, 5- or 7-bladed impeller can be compared directly — alongside the classic imbalance signal and the gyroscopic effect simulated by an obliquely-mounted mass disk.

MS718 vibrations in fans experiment — schematic

Specifications

Impellers stainless steel, Ø 204 mm, 3 / 5 / 7 blades (interchangeable)

Max speed 3000 min⁻¹

Blade excitation magnetic; gap between magnet and blades adjustable

Protective disk PVC, Ø 220 mm

Mass disk aluminium, Ø 220 mm (obliquely mounted)

Drive direct coupling to MS700 or via MS714

Storage 400 × 300 × 320 mm stackable case with foam inlay

Weight approx. 6 kg

Part of package

Machinery Diagnostics Lab

A modular training system for vibration measurement and condition monitoring of rotating machinery. Built around the MS700 base bench, it covers rotor dynamics, coupling and bearing faults, belt drives, gears, cavitation, fan and motor vibration through interchangeable experiments.

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