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Extech 407744 94dB Sound Calibrator for 0.5" and Features
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Non-contact rpm measurements to 99,999rpm with integral light beam
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Make non-contact rpm measurements of rotating objects
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Use reflective tape on object to be measured and point the integral light beam
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Ideal measurement range up to 6-Inch (152mm) distance
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Readings updated every second
About Extech 407744 94dB Sound Calibrator For 0.5" And
Product Description View larger 94dB Sound Calibrator 1kHz 94dB professional sound calibrator for 0.5" or 1.0" microphones calibrates and verifies sound level meter operation. Battery test position with battery status LED indicates if battery is good. Other Features Durable die-cast aluminum housing generates a 1kHz sine wave at 94dB to an accuracy of 5% (frequency) and ±0. 5dB (94dB). Meets IEC standard 60942 1997-11. Includes Comes with two 9V batteries, carrying case, screwdriver, and user manual. Model 407744-NIST is slso available with a Certificate of Calibration Traceable to NIST. 407766 View larger 94dB/114dB Sound Calibrator 1kHz 94/114dB professional sound calibrator for 0.5" or 1.0" microphones calibrates and verifies sound level meter operation. Level position switch to select 94dB or 114dB with power on LED indicator light. Durable die-cast aluminum housing generates a 1kHz sine wave at 94dB/114dB to an accuracy of 5% (frequency) and ±0.5dB (94dB)/±1.0dB (114dB). Meets IEC standard 60942 1997-11and comes complete with two 9V batteries, carrying case, and screwdriver. Model 407766-NIST is also available with a Certificate of Calibration Traceable to NIST. From the Manufacturer 1kHz 94dB professional sound calibrator for 0.5" or 1.0" microphones calibrates and verifies sound level meter operation. Battery test position with battery status LED indicates if battery is good. Durable die-cast aluminum housing generates a 1kHz sine wave at 94dB to an accuracy of 5% (frequency) and ±0.5dB (94dB). Meets IEC standard 60942 1997-11and comes complete with two 9V batteries, carrying case, and screwdriver.
