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Extech Instruments 407740, User Manual

The Extech Instruments 407740 User Manual is available for free download on our website. This comprehensive manual provides detailed instructions on operating and troubleshooting the product effectively. Explore its features and functionalities with ease by downloading the manual today from manualshive.com.

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User's Guide 

 
 
 
 
Digital Sound Level Meter 
 
Model 407740 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Introduction 

Congratulations on your purchase of the Extech 407740 Digital Sound Level Meter. This 
device measures sound in decibels (dB). Useful features include A/C Weighting, 
Fast/Slow Response Time, and Maximum Reading HOLD. Careful use of this meter will 
provide years of reliable service. 

 

 

Summary of Contents for 407740

Page 1: ...gratulations on your purchase of the Extech 407740 Digital Sound Level Meter This device measures sound in decibels dB Useful features include A C Weighting Fast Slow Response Time and Maximum Reading HOLD Careful use of this meter will provide years of reliable service ...

Page 2: ... improper maintenance or repair or unauthorized modification Extech specifically disclaims any implied warranties or merchantability or fitness for a specific purpose and will not be liable for any direct indirect incidental or consequential damages Extech s total liability is limited to repair or replacement of the product The warranty set forth above is inclusive and no other warranty whether wr...

Page 3: ...orcement and workplace design Select C weighting for flat response measurements the readout does not boost or dampen the measurement across the frequency spectrum C weighting is suitable for the operational maintenance and analysis of machinery motors pumps engines etc Selecting FAST or SLOW response Use the RESPONSE switch to select Fast or Slow The setting is determined by the application and an...

Page 4: ...0 8dB 3dB 8 k 1 1dB 3dB 5dB Typical A Weighted Sound Levels Calibration and Repair Services Extech offers repair and calibration services for the products we sell Extech also provides NIST certification for most products Call the Customer Service Department for information on calibration services available for this product Extech recommends that annual calibrations be performed to verify meter per...

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