Sound Level Calibrators

Sound Level Calibrators
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Product SKU: 407744/407766

Product: Sound Level Calibrators

94dB or combination 94dB/114dB, 1kHz Professional Calibrator for 0.5" or 1.0" Microphones



• 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 407744

• Battery test position with battery status LED

indicates if battery is good

• 1kHz sine wave at 94dB is generated to an

accuracy of 5% (frequency) and ±0.8dB



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 ±0.8dB

• 3 position switch (OFF/94dB/114dB)



Frequency: 1000 Hz Accuracy: ±5%

Sound Pressure Level: 94 dB (407744); 94dB/114dB (407766) Accuracy: ±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: 340g (0.75 lbs.)


NIST Certificate

Both the 407744 and the 407766 calibrators are available with NIST Certificates should one be required: 407744-NIST/407766-NIST

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