New ND9B Digital Sou …

New ND9B Digital Sou …



New ND9B Digital Sound Level Meter Calibrator Professional Noise Decibel Tool 94dB & 114dB for 1/2 and 1″ inch Microphone” DescriptionFeatures: â-Simple & Easy Operation-Digital Display with Backlight, Clearly Shows the Chosen dB Level-Lightweight and Small Size-Removable 1/2″ Transducer Cap, Suitable for 1″ and 1/2″ Microphone Size-Conforms to IEC60942 (IEC942) Class 1 Standard.-Solid Design Provides Accurate and Reliable Performance-Suitable for Personal, Field and Laboratory use âSpecifications: Sound Pressure Level: 94dB & 114dBAccuracy: ±0.3dB (20°C, 760mm Hg)Frequency: 1000±0.01% Hz allows calibration with A,B,C or D weighting networks or linearMicrophone Size: 1″ and 1/2″ microphones Temperature Coefficient: 0~0.01 dB/°CStandard: IEC60942 (IEC942) Class 1Altitude Effects: Approximately decrease 0.1dB per 2000 ft increase in altitude from sea level to 12,000 ft elevation, or comparable atmospheric pressure change (approximately every 50mm of Hg decrease)Operating Temperature: -10~50°CStorage Temperature: -40~65°C(batteries removed)Power Supply: 2 x 1.5V AAA (Not included)Size: 137 x x51 x 51mmWeight: approx. 200g Package Includes:  1 x Sound Level Calibrator1 x English Manual Details Pictures:

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