Ono Sokki SC-2500 Sound Calibrator

The Ono Sokki SC-2500 is newly developed calibrator using sound pressure feedback control method for a Class 1 sound level meter.

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  • Conforms to IEC 60942:2017 Class 1, ANSI S1.40-2006 (R2011) Class 1, JIS C 1515:2004 class 1
  • Used for calibration of Class 1 and Class 2 Sound level meter
  • Since the SC-2500 uses the sound pressure feedback control method to  control fluctuations in sound pressure caused by static pressure, it  can generate a stable sound pressure even if the operating environment  changes.
  • Cost-effective model

Further Information

Model name
Applicable standards
JIS C 1515:2004 Class 1
IEC 60942:2017 Class 1
ANSI S1.40-2006 (R2011) Class 1
Dynamic speaker
Applicable microphone
1/2-inch microphone
MI-1211/1233/1234/1235 /, MI-1431/1432/1433
1/4-inch microphone
*SC-0313 adapter attached to MI-3140 1/4-inch preamplifier is required.
Sound pressure level
Nominal sound pressure level : 114 dB
Deviation of sound pressure level:±0.25 dB or less*
Total distortion
0.5 % or less

Nominal frequency :1000 Hz

Frequency deviation* ±0.5 % or less*
Operating environment
Air temperature : -10 to 50 ℃ (with no condensation)  
                        Static pressure  : 65 to 108 kPa
                        Relative humidity: 25 to 90 % (Excluding a  combination of air temperature and humidity    that exceeds dew-point  temperature of 39 ℃ or higher.)
Power requirement
Type AA battery (LR6 or HR6)× 2
Battery life
4 hours or more continuous  operation (when using LR6)
Outer dimensions
(not including protruded section)
84 (W) × 53 (H) × 76 (D) mm
Approx. 200 g (not including battery  cells)
Instruction manual × 1
Type AA battery (LR6) × 2

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