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Related Manuals for BRUEL & KJAER 4824
Summary of Contents for BRUEL & KJAER 4824
- Page 1 Technical Documentation Modal Exciter Type 4824 User Manual English BE 1666 – 12...
- Page 3 Modal Exciter Type 4824 User Manual BE 1666 12 October 2011...
- Page 4 Safety Considerations This apparatus has been designed and tested in accordance with IEC/EN 61010 – 1 and ANSI/UL 61010 – 1 Safety Requirements for Electrical Equipment for Measurement, Control and Laboratory Use. This manual contains information and warnings which must be followed to ensure safe operation and to retain the apparatus in safe condition.
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Page 5: Table Of Contents
CHAPTER 2 Operation......................3 Preliminary ......................3 System Checks and Connections ................ 3 Mounting and Use of Modal Exciter Type 4824 ........... 5 Connecting Structure, Force Transducer and Modal Exciter ....... 5 Practical Measurement Considerations ............... 7 CHAPTER 3 Operating Characteristics.................. 9 Performance Limits .................... -
Page 7: Chapter 1 Introduction
100 N force rating, along with low total weight and a low-mass, high-rigidity, spring-suspended armature. Power Amplifier Type 2732 has been designed especially to drive Modal Exciter Type 4824 safely to full rating. - Page 8 Modal Exciter Type 4824 – User Manual...
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Page 9: Chapter 2 Operation
Operation Preliminary 2.1.1 Environment Modal Exciter Type 4824 is designed for operation at ambient temperatures between 5°C and 40°C (41°F to 104°F). System Checks and Connections Before operation, the following system checks and connections should be carried out to ensure the correct function and safe operation of the apparatus. - Page 10 Modal Exciter Type 4824 – User Manual Note: DC Static Centering Unit Type 1056 is used as an optional unit to apply a pre-tensioning force to the tension wire (if such a type of stinger is used – traditional push/pull stingers do not require any pre-tensioning) between the modal exciter and the input transducera attached to the structure under test.
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Page 11: Mounting And Use Of Modal Exciter Type 4824
Mounting and Use of Modal Exciter Type 4824 Modal Exciter Type 4824 may be used in any position and angle relative to the structure under test. Mounted in its trunnion, the exciter may be placed directly on the floor. Some applications, such as the exciter being suspended at some height from ground –... - Page 12 Using the DC Static Centering Unit means that Modal Exciter Type 4824 – mounted in its trunnion – can be placed in any position and angle, and use of a tension (piano) wire can still be accomplished.
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Page 13: Practical Measurement Considerations
The lighter the mass of the moving element in the exciter, the lesser this problem will be. Modal Exciter Type 4824 has been fitted with low weight, and precision machined magnesium armatures that ensure minimal problems with force drop-offs. - Page 14 Modal Exciter Type 4824 – User Manual...
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Page 15: Operating Characteristics
Chapter 3 Operating Characteristics Performance Limits Fig. 3.1 Sine performance curves for Modal Exciter Type 4824 Type 4824 1000 m= 0Kg 44g m= 0.1Kg 30g m= 0.5Kg 14g m= 1Kg 8g 1.5m/s 25.4mm 1000 10000 Frequency (Hz) 010241 Moving Elements The low armature weight helps to ensure high-quality force measurements by minimising force drop-offs at the test specimen’s resonance frequencies. - Page 16 Modal Exciter Type 4824 – User Manual...
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Page 17: Chapter 4 Specifications
Chapter 4 Specifications Compliance with Standards CE-mark indicates compliance with: EMC Directive and Low Voltage Directive. C-Tick mark indicates compliance with the EMC requirements of Australia and New Zealand EN 61010 1 and IEC 61010 1: Safety requirements for electrical equipment Safety for measurement, control and laboratory use. - Page 18 Modal Exciter Type 4824 – User Manual Specifications MATCHING POWER AMPLIFIER RATED CURRENT Type 2732 5.5 A RATED PEAK FORCE (SIN/RANDOM): SUSPENSION STIFFNESS 100/70 N 4 N / mm USEFUL FREQUENCY RANGE EFFECTIVE MOVING MASS 2 – 5000 Hz 0.23 kg (0.51 lb)
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Page 19: Chapter 5 Service And Repair
Chapter 5 Service and Repair Modal Exciter Type 4824 is designed and constructed to provide many years of safe, reliable operation. However, if the correct function or operating safety of the instrument is impaired, disconnect it immediately from the mains source and secure it against unintended operation. - Page 20 Modal Exciter Type 4824 – User Manual...
- Page 22 HEADQUARTERS: Brüel & Kjær Sound & Vibration Measurement A/S · DK-2850 Nærum · Denmark Telephone: +45 7741 2000 · Fax: +45 4580 1405 · www.bksv.com · info@bksv.com Local representatives and service organisations worldwide...