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Extech Instruments 407706, Руководство пользователя

Прибор Extech Instruments 407706 - это высококачественный вольтметр, который обеспечивает точные измерения напряжения. Чтобы узнать о его функциях и настройках, скачайте бесплатное руководство пользователя с сайта manualshive.com. Это удобное руководство поможет вам максимально эффективно использовать этот прибор.

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User’s Manual

Model

407706

Analog Sound Level Meter

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Содержание 407706

Страница 1: ...User s Manual Model 407706 Analog Sound Level Meter ...

Страница 2: ...airports sound studios theaters auditoriums automobiles and in the home This precisely calibrated meter features a large easy to read analog indicator and is battery powered for portable use Specifications Ranges 50 to 126dB in 7ranges of 12dB referenced to 0 00002 bar Resolution Analog Continuous Accuracy 2 dB at 94 dB sound level Microphone type Condenser Electret Analog output AC 0 707Vrms full...

Страница 3: ...o have the meter respond as the human ear would with regard to frequency response the human ear boosts and cuts amplitude over the frequency spectrum therefore it is not flat responding A weighting is used for environmental measurements OSHA regulatory testing law enforcement and workplace design Select C weighting for a flatter response measurement especially for lower frequencies C weighting is ...

Страница 4: ...st accuracy always use the lower of any two possible settings For example If the RANGE is set to 80 dB and meter reads approx 5 reset the RANGE to 70 dB and the meter will read 3 for actual sound level of 73 dB Max Hold Maximum Hold permits the user to freeze the meter s maximum reading by locking the needle indicator at the sound level peak Press the Max button to activate Max Hold Press again to...

Страница 5: ... output to a datalogger chart recorder etc for logging purposes Tripod Mount A threaded insert on the rear of the meter permits attachment to a tripod stand for increased stability and accuracy eliminates hand noise and minimizes the effects of sound reflected from the user s body Battery replacement Remove the battery compartment cover on the rear of the meter by removing the cover screw Replace ...

Страница 6: ...ails on services available Extech recommends that calibration be performed on an annual basis to insure calibration integrity Typical A Weighted Sound Levels 50HP Siren 100 135db Speech 1 68dB Jet Takeoff 200 120dB Large store 62dB Riveting machine 110dB Large office 58dB Chain saw 100dB Residence 48dB Subway 20 90dB Night residential area 42dB Freight train 100 80dB Whisper 5 32dB Vacuum cleaner ...

Страница 7: ...g 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 warrantiesor merchantability or fitness for a specific purpose and will not be liable for any direct indirect incidental or con...

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