มิเตอร์วัดระดับเสียง Sound Level Meter
รุ่น 407740
คุณลักษณะ
EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defacts in paers and workmanship for one tear from date of shipment (a six month limited warranty applies on sensors and cables). if it should become necessary to return the Service Department at (781) 890-7440 exxt. 210 for authorization or visit our website at www.extech.com (click on "Contact Extech" and go to "Service Department" 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.
คุณสมบัติ
MODEL | 407764 |
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Display | 2000 count multi-function LCD |
Input Signal Range | A Weighting : 30-130dB C Weighting : 30-130dB |
Respones Time | Fast : Response = 125ms; slow : Response = 1s |
Resolusion | 0.1 dB |
Standards Compliance | ANSI and IEC Type 2 |
Accuracy(at 23±5°C) | ±1.5dB at 1KHz (94dB) |
Frequency | 31.5 to 8,000Hz |
Microphone | Electric condenser microphone, 0.5" (12.7mm) |
Range Selector Switch | 30 to 80dB, 50 to 100dB, 80 to 130dB |
External Calibrator | Use Extech model 47744 or 407766 |
Analog Output Signal | AC : 0.5Vrms (full scale od selected range) DC : 0.3 to 1.3VDC, 10mV/dB |
Analog output impedance | 600Ω |
Analog Output Terminal | 3.5mm phone jack |
Operating Temperature | 32°F to 122°F (0°C to 50°C) |
Operating Humidity | Max. 90%RH(0° to 35°C) |
Power Supply | 9V battery |
Dimensions/Weight | 10x2.8x1.1" (255x70x28mm)/10oz.(280g) |