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ONO SOKKI > 噪音與振動量測
ONO SOKKI
麥克風&前置放大器
適用於高靈敏度及頻寬等用途之三種1/2英吋電容式麥克風,對溫度及溼度有良好的環境穩定性,配合本公司MI系列放大器,可進行設備或環境噪音測試

MI-1211
採用鈦金屬振動膜利用雷射銲接技術直接焊於框體上,實現高靈敏度、溫度下的穩定度,因採用旁通方式,最適於低噪音測試之高靈敏度麥克風
頻率範圍: 20Hz ~ 14KHz
MI-1233
採用鈦金屬振動膜,可保持高穩定性及寬頻帶的頻率特性之麥克風
頻率範圍: 20Hz ~ 20KHz
MI-1431
雖然價格較低,但因使用了鈦金屬振動膜,仍具備很高的穩定性
頻率範圍: 20Hz ~ 8KHz
 

n1/2-inch Back electret-type

New!


MI-1234

 

 

New!


MI-1432

The MI-1234/1432 is 1/2-inch back electret-type measurement microphone for sound field. Bias power supply is not required since it is back electret-type microphone. Infixing titanium diaphragm with laser welding, the MI-1234/1432 provides higher performance in environmental proof as compared to conventional models. These models are best to be used as measurement and analysis for environmental noise, architectural acoustics, and radiated sound pressure from electrical/mechanical instruments.
There are two types to be selected; the MI-1234, which is being designed to emphasize on characteristic of frequency, having wide frequency range of 20Hz to 20kHz. The MI-1432 achieves excellent environmental resistance with frequency range of 20Hz to 8kHz. Both models are used with the MI-3111 and MI-3310.
 

n1/2-inch Bias-type


MI-1211

The MI-1211, bias-type microphone with high sensitivity, is ideal for measurement of low level noise. New technology of infixing titanium diaphragm with laser welding directly makes it possible to achieve wide range, high sensitivity and high stability. Voltage needs to be supplied as it is bias-type microphone.
   

n1/2-inch Back electret-type

Photo (MI-1233 Measurement Microphone)
MI-1233
<Discontinued>
(replaced by MI-1234)

The MI-1233 uses a titanium diaphragm and not only maintains high stability, but also is designed specially to realize flat frequency response over a wide bandwidth.
 

n1/2-inch Back electret-type

Photo (MI-1431 Measurement Microphone)
MI-1431
<Discontinued>
(replaced by MI-1432)

The MI-1431 not only maintains high sensitivity, but also uses a titanium diaphragm and achieves high stability, in spite of its low cost.

Specifications

型號 MI-1234 MI-1432
頻率範圍 20Hz ~ 20kHz 20Hz ~ 8kHz
響應類型 Free Field
極電壓 0V
靈敏度 --29dB ±3dB (0dB=1V/Pa)
電容容量 12.5pF ±1pF
最大音壓級 140dB (使用 MI-3310 前置放大器)
內在噪音級 19dB (A) 以下
操作環境 -10 ~ +50°C
操作溼度 30 ~ 90%RH (不凝結)
溫度特性 0.01dB/°C 以下
濕度特性 0.003dB/% RH  以下
衰退 0.1dB/年  以下
外觀尺寸 13.2mm dia. x 13.7mm 13.2mm dia. x 13.2mm
重量 約 6g


型號

MI-1211 MI-1233 MI-1431
頻率範圍 20Hz ~ 14kHz 20Hz ~ 20kHz 20Hz ~ 8kHz
響應類型 Free Field
偏壓電壓 200V 0V
靈敏度 -20dB ±1.5dB
(0dB=1V/Pa)
-29dB ±3dB
(0dB=1V/Pa)
電容容量 12pF ±1pF 11pF ±2pF
最大音壓級 132dB
(使用 MI-3310 前置放大器)
140dB
(使用 MI-3310 前置放大器)
內部噪音級 12dB (A) 以下 19dB (A) 以下 20dB (A) 以下
操作環境 -10 ~ +50°C
操作溼度 30 ~ 90%RH
(不凝結)
溫度特性 0.007dB/°C 以下 0.01dB/°C 以下 0.012dB/°C 以下
濕度特性 0.003dB/% RH 以下 0.005dB/% RH 以下
衰退 0.1dB/年  以下 0.2dB/年  以下
外觀尺寸 13.2mm dia. x 15.2mm 13.2mm dia. x 13.5mm 13.2mm dia. x 12.9mm
重量 約 5g