The SC-3120 Sound Calibrator is a precise standard sound source of piston-phone type which accurately calibrates a sound level meter. It drives the piston in the cylinder in reciprocating motion to generate sine-wave sound having a fixed sound pressure level.
The SC-3120 is applicable to IEC 60942:2003 Class 1/C (JIS C1515:2004 Class 1/C) and calibrates a sound level meter with high accuracy and stability.
It is used for calibration of Class 1 or Class 2 sound level meter and sound measurement instruments including microphone which is used for sound power level measurement.
- Applicable to IEC 60942:2003 Class 1/C (JIS C1515:2004 Class 1/C). It can be used for calibration of Class 1 or Class 2 sound level meter.
- Generating high sound pressure at 114 dB decreases the affection by back ground noise.
- It can be used for calibration of 1/2-inch or 1/4-inch microphone by Ono Sokki. (1/4-inch microphone requires adapter which is provided with the MI-3140 preamplifier as a standard accessory.)
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Specifications
| Applicable Standards | IEC 60942:2003 Class 1/C | JIS C 1515:2004 Class 1/C |
| Method | Piston-phone |
| Applicable Microphones | 1/2" Microphone | 1/4" Microphone (MI-1531*) * The adapter which is provided as standard with the MI-3140 preamplifier for MI-1531 is required in use. |
| Sound Pressure Level | 114 dB ± 0.4 dB (at 23 °C/50 % RH/ atmospheric pressure of 101.325 kPa ) |
| Frequency | 250.0 Hz ± 0.4 % |
| Operating Temperature Range | -10 to +50 °C |
| Operating Humidity Range | 25 to 90 % RH (With no condensation) |
| Battery Life | Approximately 2.5 hours |
| Dimensions | 60 (W) × 38 (H) × 200 (D) mm |
| Weight | Approximately 600g (Not including batteries) |
| Accessories | Instruction manual x 1, Barometer, Type AA dry cell battery (R6P) x 3, Microphone adapter for 1-2-inch microphone (SC-0312), Storage case |
Notes
There are no additional notes for this product.
