NOISE CONTROL DEMONSTRATION UNIT Deluxe

A glass reinforced plastic instrument panel and baseboard with controllable 240V AC and 12V DC power sources for investigating noise generation, transmission and attenuation. Two interchangeable noise sources are provided:

• Noise source 1: 240V motor and gearbox with detachable eccentric rotor
• Noise source 2: 12V DC fan

Both sources mount on resilient mounts that can be bypassed to demonstrate noise transmission through rigid mountings. Variable supply voltage allows investigation of different vibration modes and noise frequencies. Learn about NOISE CONTROL DEMONSTRATION UNIT exporters for optimal educational outcomes.. Adding a large mass to the motor mounting further extends this investigation. A rigid glass reinforced plastic enclosure (with or without acoustic lining) can be placed over either source. Learn about NOISE CONTROL DEMONSTRATION UNIT suppliers for optimal educational outcomes.. Openings at both ends of the enclosure demonstrate the effect of small holes and transmission of mechanical and aerodynamic noise along ducts. Removable solid linings to acoustically lined noise attenuation tubes illustrate the effectiveness of duct attenuation. Learn about NOISE CONTROL DEMONSTRATION UNIT equipment for optimal educational outcomes.. Two microphones are provided — one fixed adjacent to the noise source and one on a moveable wand. Each can be connected to a dB(A) filter and amplifier driving an illuminated bar display showing relative loudness levels for both visual and subjective comparison. Learn about NOISE CONTROL DEMONSTRATION UNIT for educational labs for optimal educational outcomes..

• Noise source 1: Integral 240V electric motor and gearbox with eccentric rotor
• Noise source 2: 12V DC fan unit
• Variable voltage control for speed control of both motors
• Microphones: 2 × each connectable to a dB(A) filter and illuminated bar display
• Rigid enclosure with acoustic lining placeable over either noise source
• Duct attachments for sound attenuation investigation
• Resilient mountings and bypass equipment for vibration mode and solid transmission investigation