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Extech Instruments 407730, User Manual

The Extech Instruments 407730 is a high-quality digital sound level meter designed for accurate noise level measurements. To ensure you can operate this device effectively, we provide a comprehensive User Manual on our website. Download the manual for free at manualshive.com to maximize the potential of your Extech Instruments 407730.

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User's Guide

Digital Sound Level Meter

Model 407730

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Summary of Contents for 407730

Page 1: ...User s Guide Digital Sound Level Meter Model 407730 ...

Page 2: ...esponse Time Fast and Slow Max Hold and Max Min recording Careful use of this meter will provide years of reliable service Meter Description 1 Microphone 2 LCD Display 3 ON OFF button 4 A C weighting selection button 5 Min Max Record button 6 Range selector button 7 F S response selection button 8 Max Hold selector button 9 Calibration adjustment 10 AC analog output jack 11 Windscreen 1 Record ico...

Page 3: ...Time Use the F S button to select FAST 125 ms or SLOW 1 second response time Select FAST to capture noise peaks and noises that occur very quickly Select the SLOW response to monitor a sound source that has a consistent noise level or to average quickly changing levels FAST or SLOW icons will appear in the display Select Slow response for most applications Auto or Manual Ranging The meter will tur...

Page 4: ...button is pressed Calibration To calibrate the meter an external calibrator such as the Extech 407744 or the Extech 407766 is required in addition to a small screw driver 1 Turn the meter ON 2 Select the 80 to 110dB range 3 Select A weighting and SLOW response 4 Place the microphone into the calibrator Set the calibrator to output a 1kHz sine wave 94dB 5 Adjust the calibration potentiometer for a ...

Page 5: ...tomer Service Department at 781 890 7440 ext 210 for authorization or visit our website www extech com for contact information A Return Authorization RA number must be issued before any product is returned to Extech The sender is responsible for shipping charges freight insurance and proper packaging to prevent damage in transit This warranty does not apply to defects resulting from action of the ...

Page 6: ...t information visit our website www extech com Typical A Weighted Sound Levels 50HP Siren 100 130 120 110 100 90 80 70 60 50 40 30 20 10 140 0 Jet takeoff 200 dBA Riveting machine Chain saw Subway 20 Boiler room Pneumatic drill 50 Freight train 100 Vacuum cleaner 10 Speech 1 Large store Large Office Small office Residence Night residential area Whisper 5 0 Sound studio Threshold of hearing Copyrig...

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