เครื่องแคลิเบลเครื่องวัดเสียง เครื่องปรับตั้งเครื่องวัดเสียงที่ 94 และ 114 เดซิเบล

Digital Sound Level Calibrator for Sound Level Meter, 94dB & 114dB Class I w/Battery (ND9)

ราคาพิเศษ 5,000 บาท

The ND9 Sound Level Calibrator is a handy source for fast & easy calibration of sound level meter and sound measuring system. Design to check the accuracy of many types of sound instruments. It is a handy sound source for quick and easy calibration of sound level meters and sound measuring systems. It features a solid state integrated circuitry that provides accurate and stable performance. Compatible with SL-5868P sound level meter and an IEC942 Class I compliant.

Features: Workhorse of the acoustics field Generates standard levels and frequencies Extremely low influence of static pressure Sensitivity calibration of microphones Adaptable to 1.5" microphone size Suitable for laboratory and in the field use Supplied with Instruction Manual and batteries Adaptors and cases available Specifications: Standard: IEC942 Class I Output Sound Level: 94db & 114db Accuracy: ±0.3db (20ºC, 760mm Hg) Frequency: 1000±0.1% Hz (allows calibration with A,B,C or D weighting networks or linear Temperature range: -10ºC~50ºC operating Design For: 1" and 1/2" microphones Storage (with batteries are removed) -40ºC~65ºC Extremely low influence of static pressure Temperature coefficient: 0 to 0.01dB/ºC Altitude Effects: Approximately 0.1dB decrease for each 2000 feet increase in altitude from the sea level to 12,000 feet elevation or comparable atmospheric pressure change (approx. every 50mm of Hg decrease) Power Supply: 2 x 9v transistor batteries NEDA 1604. Burgess 2U6 or equivalent. Battery life approx. 100 hours Dimension: 48mm x 48mm x 138mm Weight: 250g Accessories included: User's Manual