Extech Instruments 407768 Скачать руководство пользователя страница 6

407768   Version 2.0   06/06 

 

Support Hotline (781) 890-7440 

Tech support: Ext. 200; Email: [email protected] 

Repair/Returns: Ext. 210; Email: [email protected] 

Website: www.extech.com 

Battery Replacement 

The 9V battery that powers the Sound Level Meter is housed in the rear battery 
compartment. When the battery icon appears on the top left corner of the meter's LCD, it is 
time to replace the battery. 

1.  Open the battery compartment by first removing the Phillips screw and then sliding the 

compartment cover down and off. 

2.  Replace the 9V battery, slide the cover on, and replace the screw. 

Calibration and Repair Services 

Extech offers complete repair and calibration services

 for all of the products we sell. 

For periodic calibration, NIST certification or repair of any Extech product, call customer 
service for details on services available. Extech recommends that calibration be performed 
on an annual basis to insure calibration integrity. 

 
 
 
 
 
 
 
 
 

 

Warranty 

EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and 
workmanship for one year from date of shipment (a six month limited warranty applies on sensors and 
cables). If it should become necessary to return the instrument for service during or beyond the warranty 
period, contact the Customer Service Department at (781) 890-7440 ext. 210 for authorization or visit our 
website at www.extech.com  (click on ‘Contact Extech’ and go to Service Department to request an RA 
number). 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 user such as misuse, improper 
wiring, operation outside of specification, 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 written or oral, is expressed or implied. 

 

Copyright 

©

 

2006 Extech Instruments Corporation. 

All rights reserved including the right of reproduction in whole or in part in any form.

 

Содержание 407768

Страница 1: ...User s Manual Digital Sound Level Meter Model 407768 ...

Страница 2: ...0 to 130dB Manual Ranges 30 to 80dB 50 to 100dB 80 to 130dB Frequency weighting A and C Programmable Applicable standards ANSI IEC Type 2 Resolution 0 1dB Maximum Minimum record Highest and lowest readings are stored for later recall Data Hold Displayed reading is held when HOLD key is pressed Max Hold Highest reading displayed only Response time Fast 125ms Slow 1s Programmable AC Analog output 0 ...

Страница 3: ...play on the lower left hand area of the LCD Note With A weighting selected the meter responds like the human ear boosting and cutting the noise amplitude over the frequency spectrum see Appendix A weighting is used for environmental measurements OSHA regulatory testing law enforcement and workplace design Select C weighting for flat response measurements no boost or cut C weighting is suitable for...

Страница 4: ...her reading is encountered the display will update 3 Press the MAX HOLD button again to de activate this feature The PH icon will extinguish 4 Note that Max Hold is not available while the meter is in the Max Min Record mode Max Min Data Recording The Max Min feature stores the maximum reading and minimum reading while the user takes measurements The Max and the Min readings can later be recalled ...

Страница 5: ... Instructions for use can be found on the included software CD Important Note on the Automatic Power OFF feature The 407768 Sound Level Meter has an AUTO POWER OFF feature that turns the meter off after approximately 10 minutes This feature must be disabled before starting a datalogging session to avoid having the meter automatically shut off in the middle of a session Disable it by pressing the R...

Страница 6: ... six month limited warranty applies on sensors and cables If it should become necessary to return the instrument for service during or beyond the warranty period contact the Customer Service Department at 781 890 7440 ext 210 for authorization or visit our website at www extech com click on Contact Extech and go to Service Department to request an RA number A Return Authorization RA number must be...

Страница 7: ... 50 HP Siren 100 Jet take off 200 Riveting machine Subway 20 Pneumatic drill 50 Vacuum cleaner 10 Large store Small office Residential area night Whisper 5 Threshold of hearing Chain saw Boiler room Freight train 100 Speech 1 Large Office Residence Sound studio more infor for Extech 407768 Phone 01235 838 555 Email cs airconcern co uk Web www airconcern co uk Air Concern Ltd Building 173 Curie Ave...

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