extech

Extech 407766: 94/114dB Sound Calibrator

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       00961 1 894 243      

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Description

Features:
• Calibrates and verifies Sound Level Meter operation
• For use on Sound Level Meters with 0.5″ or 1.0″ microphones
• Total Harmonic Distortion (THD) <2% at 94dB
• Meets IEC standard 60942 1997-11
• Complete with two 9V batteries, carrying case, and screwdriver

Model 407766
• LED indicator lights up when power is on
• Level position to select 94dB or 114dB
• 1kHz sine wave at 94dB/114dB is generated to an accuracy of 5% (frequency) and ±0.5dB (94dB)/±1.0dB (114dB)
• 3 position switch (OFF/94dB/114dB)

Specifications Range Accuracy
Frequency 1000 Hz ±5%
Sound Pressure Level 94 dB (407744); 94dB/114dB (407766) ±0.5dB (94dB), ±1dB (114dB)
Distortion <2% Total Harmonic Distortion (THD)  
Operating Temperature 32 to 122°F (0 to 50°C)  
Power Supply Two Heavy duty, alkaline 9V Battery  
Power consumption Approx. 10mA DC  
Dimensions 2.2″ diameter x 5.6″ long (50 x 127mm)  
Weight 0.75 lbs. (340g  

Additional information

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