Sound calibration

SC-2600/SC-2500A/SC-2120A

An acoustic calibration is used for unit calibration of measuring microphones and for verifying the readings of sound level meters.
Since sound pressure is affected by factors such as temperature and atmospheric pressure, it is important to use an acoustic calibration before and after measurement to ensure accurate measurements.
Depending on the measurement method, such as measuring acoustic power levels, it is stipulated that microphones must be calibration using an acoustic calibration.
Furthermore, JIS C 1509-1 and IEC 61672-1 stipulate that when using a Class 1 sound level meter, a Class 1 acoustic calibration must be used.

Inquiry

Regarding the use of acoustic calibration

Even with the same acoustic calibration, the "calibration sound pressure level" can differ depending on the type of microphone.
When calibration, you must always check the "calibration sound pressure level" in the instruction manual.
If you are using a "Class 1" sound level meter or microphone, we recommend using a "Class 1" acoustic calibration.
Regular calibration is necessary to ensure the performance of the acoustic calibration.
Our company offers three calibration services: "ASNITE calibration," "JCSS calibration," and "general calibration."
See details →

This acoustic calibration conforms to JIS C 1515:2020 Class 1 and has a nominal sound pressure level of 94 dB. In addition to feedback control, it incorporates correction functions for static pressure and temperature to produce a stable sound.
For high-precision measurements using the low-noise microphone MI-1282M10 ^*, we recommend using this product.
^* Acoustic calibration of low-noise microphones requires an acoustic calibration with a nominal sound pressure level of 94 dB.

This acoustic calibration conforms to JIS C 1515:2020 Class 1 and has a nominal sound pressure level of 114 dB. It generates a stable sound through internal feedback control.
Because it generates a high sound pressure level of 114 dB, it is less susceptible to interference from loud ambient noise levels such as factories and outdoors, and calibration in the actual measurement environment.

Model	SC-2600	SC-2500A	SC-2120A
Applicable standards	JIS C 1515:2020 Class 1 IEC 60942:2017 Class 1 ANSI S1.40-2006 (R2011) Class 1		JIS C 1515:2004 Class 2 IEC 60942:2003 Class 2
method	Speaker system
Compatible products	1/2-inch microphones: MI-1235/MI-1271/MI-1433/MI-1271M12/MI-1282M10 1/4-inch microphone: MI-1531 ^2 High-performance sound level meters: LA-7200/LA-7500/LA-7700 Integrating average sound level meter: LA-1411/LA-1441A/LA-4441A Ultraminiature Microphone: MB-2200M10 ^3	1/2-inch microphones: MI-1235/MI-1271/MI-12811/MI-1433/MI-1271M12 1/4-inch microphone: MI-1531 ^2 High-performance sound level meters: LA-7200/LA-7500/LA-7700 Integrating average sound level meter: LA-1411/LA-1441A/LA-4441A	1/2-inch microphones: MI-1235/MI-1271/MI-1433/MI-1271M12/MI-1282M10 High-performance sound level meter: LA-7200 Integrating average sound level meter: LA-1411/LA-1441A Ultraminiature Microphone: MB-2200M10 ^*3
Sound pressure level	Nominal sound pressure level: 94 dB Sound pressure level deviation: within ±0.20 dB ^*4	Nominal sound pressure level: 114 dB Sound pressure level deviation: within ±0.20 dB ^*4	Nominal sound pressure level: 94 dB Sound pressure level deviation: within ±0.5 dB ^*4
Total strain	0.5% or less*4		0.5% or less
frequency	Nominal frequency: 1000 Hz Frequency deviation: within ±0.1% ^*4		Nominal frequency: 1000 Hz Frequency deviation: within ±1% ^*4
Usage environment	Ambient temperature: -10 to 50 °C (non-condensing) Static pressure: 65–108 kPa Relative humidity: 25-90% *Excluding ambient temperatures and humidity above 39°C where the dew point is higher.
Power supply	2 x AA batteries (LR6 or HR6)		1 x 9V flat-type dry cell battery (6F22 or 6LR61)
battery life	Continuous operation for 10 hours or more (when using LR6 in a standard environment)		Continuous use for 20 hours or more (when using 6F22)
External dimensions (excluding protrusions)	84 (W) × 53 (H) × 76 (D) mm		52 (W) × 45 (H) × 130 (D) mm
Weight	Approximately 220g (including 2 dry cell batteries)		Approximately 300 g (excluding batteries)
Accessories	Instruction manual (Japanese/English/Chinese) × 1 2 x AA batteries (LR6) Coupler protection cap × 1		Instruction manual × 1 9V flat-type dry cell battery (6F22) × 1
price

*1: Discontinued product
*2: The SC-0313 adapter included with the MI-3140 1/4-inch preamplifier is required.
*3: The MB-0210 calibration adapter, sold separately, is required.
*4: The indicated value is based on the reference environment (reference environment conditions: ambient temperature 23 °C, static pressure 101.325 kPa, relative humidity 50 %).

Inquire about this product

Sound calibration

SC-2600/SC-2500A/SC-2120A

Features

SC-2600

SC-2500A

SC-2120A

Specification

Download

Outline Drawings

Instruction Manual

Related Information