407744

     Extech Calibrators accommodate Sound Level Meters with 0.5" and 1" microphones. The Calibrator's die-cast aluminum housing is built for ruggedness and durability. The 407744 provides a 94dB calibration output signal while the 407766 provides both 94dB and 114dB outputs. This professional calibrator 407744, with proper care, will provide years of safe reliable service.
    There are some specificaitons about 407744. Output signals are (407744)94dB . Output signal accuracy are (407744)± 0.5dB. Output signal frequency is 1KHz sine wave. Accuracy of output signal frequency is ± 5%. Compatible microphones sizes is 0.5" and 1" microphones . Operating temperature is 32 to 122oF (0 to 50oC). Power supply is two (2) 9V batteries. Power consumption is approx. 10mA DC. Battery check is status LED. Dimensions is 2.2" diameter x 5.7" length (50 x 145mm). Weight is 0.75 lbs. (340g).
    Extech 407744 also provides NIST certification for most products. Call the Customer Service Department for information on calibration services available for this product. Extech 407744 recommends that annual calibrations be performed to verify meter performance and accuracy.
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