VTSYIQI ND9A Sound Level Calibrator 1/2" Diameter Microphones 0.5dB Accuracy Voice Decibel Meter Dosimeter Calibration Instruments with 94 dB and 114 dB Sound Pressure Level Color White

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About VTSYIQI ND9A Sound Level Calibrator 1/2" Diameter

Shipping Policy : Battery and Liquid not included during the shipping For quick and easy calibration of sound level meters and sound measuring systems. Sound Level Calibrator Voice Decibel Meter Dosimeter Calibration Instruments Features * Handy sound source for quick and easy calibration of sound level meters and sound measuring systems. * The Calibrator employs solid state integrated circuitry that provides accurate and stable performance. * Sensitivity calibration of microphones. * Suitable for field and laboratory use. Technical Specifications * Model:ND9A * Standards: GB/T15173,ANSI S1.40 CLASS2,IEC942 * Sound Pressure Level: 94 dB, 114 dB * Accuracy: 0.5 dB * Frequency: 1000Hz * Cailbration Of Microphones: 1’’,1/2’’ * Frequency: 1000+0.1% Hz, so it can be corrected on A, B, C, D or linear frequency weighting. * Applicable scope: ɸ12.7mm (1/2 inch) and ɸ23.77mm (1 inches) and acoustic microphone calibration of measuring instruments. * Power Supply: 1x9V 6F22 Battery（Battery not included in the package） * Dimensions: 142x47x47 mm * Weight:275g * Standard Accessories: Main Unit, Windscreen, Carrying Case (B04), Operation Manual * Optional Accessories: ND9 Sound Level Meter Calibrator, RS-232C Data with Software, Bluetooth Data Adapter with Software