Measurement-related Equipment / Inspection Equipment

Pistonphone
『TYPE 2124A』

2 channel AD Converter
『ACO DAQ（TYPE 8835）』

Vibration Calibrator
『TYPE2110』

All-weather Type Windscreen
『NA-0303』

Dummy Head
『SAMURAI HATS』

Sound Calibrator
​『TYPE 2127』

Pistonphone『TYPE 2124A』

used for precise calibration of sound level meter provided with 1-inch, 1/2-inch and 1/4-inch condenser microphones.

TYPE 2124A is a standard sound source, which emits 124dB-SPL pure sine tone at 250Hz for calibration of sound level meter.

 Specifications

Type

2124A

Sound pressure level

124dB　re.20μPa

Accuracy

±0.2dB

Frequency

250Hz　±2% (Oscillation)

Power source

DC6V（単3×4）

Battery life

Approx. 8 hours

Size / Weight

37φ×224 / 800g

Accessories

1/2 and 1/4-inch microphone Adapter

2 channel AD Converter『ACO DAQ（TYPE 8835）』

Compact and light weight 2 channel AD converter

ACO DAQ is a compact and light weight 2 channel AD converter developed for the purpose of audio recording or analysis.

When connected using USB interface, etc. it is recognized by Windows system as USB audio codec device, and general recorder / measurement application program can be used without requiring installation of exclusive device driver.

Features

 Specifications

No. input channels

2 channels

Analog input

BNC, IEPE single end

Impedance

100kΩ

Frequency range

3.5Hz～20kHz

Dynamic range

90dB

Sampling rate

48kHz

Bit rate

24bit

Constant current

28V 4mA

Power source

USB bus power (power consumption less than 0.8 W)

Operating temperature

0～+50℃ (without condensation)

Storage temperature

-10～+60℃

Compatible OS

Windows7, 10

Dimension / Weight

70(W)×60(D)×20(H)mm / 50g

Vibration Calibrator『TYPE2110』

TYPE 2110 Vibration Calibrator offers highly accurate calibration for vibration pickups with the weight of 10-500g.

Vibration Calibrator TYPE 2110 is a calibrator for the maintenance control of vibration level meter.

Low cost and high accuracy check and calibration of the vibration level that is in accordance with “JIS C 1510 : 1995 Vibration Level Meter” can be performed for the vibration level meter after the operation under severe environment or long period of usage.

Switching of the frequency of commercial power (50 Hz or 60 Hz) can be easily made and horizontal calibration is possible by using the pick-up holder.

 Specifications

Vibration excitation level

97dB±0.5dB (0dB=10^‐5m/s²(rms))

Vibration excitation frequency

6.3Hz±2%

Maximum allowable weight

2.6kg

Acceleration waveform distortion rate

5% max (Frequency range ：1 – 100 Hz)

Vibration table diameter

φ130mm

Operating temperature

15～35℃ 90% max

Power source

AC100V (50Hz/60Hz switching)

Dimension / Weight

Approx.305(W)×183(D)×211(H) mm / Approx.20kg

All-weather Type Windscreen『NA-0303』

Specifically, suited for long-term outdoor noise measurements

Snow and water proof, and all-weather windscreen with good wind noise reduction capability and sufficient durability.

Composition

Windscreen(φ200): 1
Waterproof cap: 1
Microphone mounting bracket: 1
Tripod mounting bracket: 1
Extension cable(Waterproof connector)  0.5m  BC-0046A: 1

*The extension cable attached to all-weather windscreen and optional extension cable are needed to connect to the sound level meter.

 Specifications

Type

NA-0303

Wind noise reduction capability

20dB

Size / Weight

Φ200mm×318(H) / 約600g

Applicable diaphragm diameter

1/2 inch

Dummy Head『SAMURAI HATS』

It is ideal for evaluation of headphones or earphones and measurement of automobile interior acoustic field.

With ACO’s HATS (Dummy Head) that complies with ANSI and IEC standards, measurements can be made taking effects by diffraction or reflection that occurs when the acoustic wave propagates near the head and body into consideration.
It uses omnidirectional type microphone and it is possible to record the sound with high presence that is very close to the real sound heard by human ear. (Binaural recording)
​It is ideal for evaluation of headphones or earphones and measurement of automobile interior acoustic field. Also, highly precise analysis for architectural acoustics can be achieved by using Handheld Analyzer.

Features

■ TYPE8328A

TYPE 8328A has ear simulator coupler (both ears) and is suitable for development/evaluation of headphones or earphones or measurement of acoustic characteristics of cell phones, etc.

■ TYPE8328B

TYPE 8328B has 2 microphones positioned near the ear canals and is suitable for measurement of automobile interior acoustic environment (interior noise, voice recognition), reflecting effects on response caused by human head and body.

Sound Calibrator『TYPE 2127』

Low cost calibrator which is small, lightweight and easy-to-use

Type 2127 is a sound calibrator with high accuracy feed-back control method. It has been developed under the concept of “provide low cost calibrator which is small, lightweight and easy-to-use” and has many unprecedented features.
It complies with JIS C 1515:2020 Class1, IEC60942:2017 class1 and uses stable condenser microphone as a control sensor.
Since it strictly controls generated sound pressure level in real-time, the possibility of errors due to changes in atmospheric pressure or microphone insertion loss are very small, and the accuracy and stability are unmatched despite its small size.

Features

 Specifications

Pursuant Standards

JIS C 1515:2020 Class1
IEC 60942:2017 class1
ANSI S1.40-2006 (R2011) Class1

Coverage microphone

1-inch and 1/2-inch

Nominal Sound pressure level

94dB

Nominal Sound pressure level (Tolerance)

±0.2dB

Battery Type

Two Alkaline dry batteries (LR6)

Size / Weight

Approx.100(W)×75.5(H)×46(D) / 150g

Accessories

1/2-inch microphone Adapter: 1
Alkaline dry batteries (LR6 ): 2
Case: 1
Instruction manual: 1