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RION Sound Calibrator NC-74

Compact and lightweight unit requires no atmospheric pressure compensation

Sound Calibrator

Model:

NC-74

Maker:

RION CO.,LTD.

Features

  • Compliant with IEC 60942:2003 class 1 and JIS C1515:2004 class 1
  • Allows calibration of 1-inch and 1/2-inch microphones
  • No need for atmospheric pressure compensation
  • Frequency 1 kHz, SPL 94dB

Use

 

Carefully insert the microphone all the way into the coupler of the NC-74. Then simply turn the power on to apply a constant sound pressure level to the diaphragm of the microphone.
The performance of the NC-74 is suitable for calibration of high-precision sound level meters.
The unit is compact, lightweight, and easy to use. Two IEC LR6 (size AA) alkaline batteries will power the unit for more than 30 hours of continuous use at room temperature.

Specifications

 

Applicable   standards IEC 60942:2003 class 1
JIS C1515:2004 class 1
Suitable   microphones 1-inch   microphones IEC 61094-1 Type LS1P
UC-27
UC-25
UC-34
1/2-inch  microphones IEC 61094-1 Type LS2aP
UC-59
UC-57
UC-52
UC-26
UC-30
UC-31
UC-33P
Nominal sound pressure level 94 dB
Sound pressure level tolerance ±0.3 dB
Nominal   frequency 1 kHz
Frequency   tolerance ±1.0 % or less
Power   requirements IEC LR6 (size AA) alkaline battery × 2
Dimensions,   mass Approx. 49 (H) × 80 (W) × 74 (D) mm
Approx. 200 g (including batteries)
Supplied   accessories Case × 1
IEC LR6 (size AA) alkaline battery × 2
1/2-inch microphone adapter NC74S10 × 1

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