PRODUCTS
- Microphone
- Measurement condenser microphone
High temperature specification microphone
TYPE 7412
There are two type of ACO microphones : preamplifier integrated microphone and condenser microphone.
Preamplifier integrated microphone compatible with IEPE can be connected directly to FFT analyzer or other analyzers, enabling to measure with highly accurate resolution at low costs.
Long-term stability realized by accelerated aging process under 360℃ enables to use under 100℃ or higher.
Condenser microphone is to be used for measurements of sound presser level with high resolution over wide frequency range.
Varieties of microphone diaphragm diameter 1,1/2, 1/4, 1/6, 1/8 inch and corresponding frequency characteristics would best support measurements of various purposes.
The diameters and electroacoustic characteristics of these measurement microphones comply with the international standard IEC 61094-4:1995.
It also complies with the microphone specifications required by IEC 61672, which is an important standard for measurement systems such as Class 1/ Class 2 sound level meters.
TYPE 1 and TYPE 2 indicates compliance with IEC 61672 Class 1 and Class 2, respectively.
Maximum operating temperature of this measurement condenser microphone is 250℃ that can be used under the high temperature environment that heatproof is demanded.
| Frequency Response Characteristic | Free-Field |
| Nominal Diameter | 1/2 inch |
| Release voltage | -42dB (7.9mV/Pa) |
| Polarization voltage | 100V |
| Frequency Characteristics | 20Hz～20kHz |
| Maximum sound pressure level | 150dB |
| Self-noise level | 42dB(A) |
| Temperature coefficient | 0.02dB/℃ or less |
| Preamplifier Type | TYPE 4012 (with joint adapter TYPE 4412) |
| Operating Temperature・Range of Humidity | -10～+250℃・90%RH(no condensation) |
| Storage Temperature・Range of Humidity | 40％ or less (at room temperature) |
| Outline size | Φ13.2 × 12.6 |
| Weight | Approx.6g |
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