Ono Sokki is a world-leading manufacturer of high quality and innovative measurement and testing instrumentation for R&D, quality control and production line engineers, especially in the automotive industry. A one-stop solution for measurement, our range of products includes engine rpm and torque measurement, sound and vibration testing, rotary encoders, tachometers, data processing and more.
Measurement Microphone
The MI-1235 uses a titanium diaphragm and not only maintains high stability but also is designed specially to realize flat frequency response over a wide bandwidth.
♦ Specifications
| Frequency range | 10 Hz to 20 kHz |
| Responce type | Free Field Type |
| Electrode Forming Voltage | 0 V |
| Sensitivity | -29 dB ±3 dB (0 dB = 1 V/Pa) |
| Capacitance | 13 pF ± 1 pF |
| Maximum Sound Pressure Level | 143 dB |
| Intrinsic Noise Level | 19 dB (A) Maximum |
| Operating Temperature range | -10 to +50ºC |
| Operating Humidity range | 20 to 90% Relative Humidity (With No Condensation) |
| Temperature Characteristics | 0.009 dB/ºC Maximum |
| Humidity Characteristics | 0.001 dB/% Relative Humidity Maximum |
| Aging Drift | 0.1 dB/year Maximum |
| Storage Temperature Range | -20 to +60ºC |
| Storage Humidity Range | 20 to 90% Relative Humidity (With No Condensation) |
| Outer Dimensions | 13.2 mm Diameter x 13.7 mm |
| Mass | 6g |
♦ Notes:
There are no additional notes for this product.
MI-1271 is high performance microphone which conforms to IEC 61094-4 Type WS2F. By adopting the titanium vibrating membrane, it realizes long-term stability and wide frequency range of 1 Hz to 20 kHz. It can be used in wide temperature range of -30 ℃ to +80℃. Achieves 14 dB of self noise level (A-weighting) even though it is back electret type, and features low noise measurement.
♦ Specifications
| Frequency range | 1 Hz to 20 kHz (±2 dB) |
| Responce type | Free Field Type |
| Electrode Forming Voltage | 0 V |
| Sensitivity | -26 dB±1.5 dB re. 1 V/Pa 50 mV/Pa (1 kHz) |
| Capacitance | 12 pF (Representative Value) |
| Maximum Sound Pressure Level | 135 dB (When using MI-3170) |
| Intrinsic Noise Level | 14.0 dB (Representative Value) (When using MI-3170) |
| Operating Temperature range | -30 to +80ºC |
| Temperature Characteristics | +0.005 dB/K (Representative Value) |
| Operating Humidity Range | 0 to 90 % (With no condensation) |
| Humidity Characteristics | -0.0004 dB/% (Representative Value) |
| Storage Temperature Range | 0 to 90 % (With no condensation) |
| Storage Humidity Range | 20 to 90% Relative Humidity (With No Condensation) |
| Outer Dimensions | φ13.2 mm × 16.9 mm |
| Mass | Approximately 6 g |
♦ Notes:
There are no additional notes for this product.
The MI-1433 not only maintains high sesitivity but also uses a titanium diaphragm and achieves high stability in spite of its low cost.
♦ Specifications
| Frequency range | 20 Hz to 8 kHz |
| Responce type | Free Field Type |
| Electrode Forming Voltage | 0 V |
| Sensitivity | -29 dB ±3 dB (0 dB = 1 V/Pa) |
| Capacitance | 13 pF ± 1 pF |
| Maximum Sound Pressure Level | 143 dB |
| Intrinsic Noise Level | 19 dB (A) Maximum |
| Operating Temperature range | -10 to +50ºC |
| Operating Humidity range | 20 to 90% Relative Humidity (With No Condensation) |
| Temperature Characteristics | 0.009 dB/ºC Maximum |
| Humidity Characteristics | 0.001 dB/% Relative Humidity Maximum |
| Aging Drift | 0.1 dB/year |
| Storage Temperature Range | -20 to +60ºC |
| Storage Humidity Range | 20 to 90% Relative Humidity (With No Condensation) |
| Outer Dimensions | 13.2 mm Diameter x 13.5 mm |
| Mass | 6g |
♦ Notes:
There are no additional notes for this product.
The 1/4-inch diameter condenser microphone MI-1531, with its preamplifier MI-3140, enable to measure the high frequency band more than 20kHz which it is impossible by using the 1/2-inch microphone. An amplifier is not required in use as it is a back electret-type condenser microphone, which differs from a bias-type microphone. And also, the MI-1531 achieves a measurement at Max. 168 dB as a performance of a microphone itself.
♦ Specifications
| Frequency range | 10 Hz to 20 kHz |
| Responce type | Free Field Type |
| Sensitivity | -29 dB ±3 dB (0 dB = 1 V/Pa) |
| Capacitance | 13 pF ± 1 pF |
| Maximum Sound Pressure Level | 143 dB |
| Intrinsic Noise Level | 19 dB (A) Maximum |
| Operating Temperature range | -10 to +50ºC |
| Operating Humidity range | 20 to 90% Relative Humidity (With No Condensation) |
| Temperature Characteristics | 0.009 dB/ºC Maximum |
| Storage Temperature Range | -20 to +60ºC |
| Storage Humidity Range | 20 to 90% Relative Humidity (With No Condensation) |
| Outer Dimensions | 13.2 mm Diameter x 13.7 mm |
| Mass | 6g |
♦ Notes:
There are no additional notes for this product.
The MI-3111 preamplifier is for use with a 1/2 inch microphone, featuring constant current power and a BNC connector.
- Constant Current Operation
♦ Specifications
| Applicable Microphone | MI-1233 / MI-1234 / MI-1235 / MI-1431 / MI-1432 / MI-1433 |
| Frequency Bandwith | 10 Hz to 20 kHz |
| Gain | -2 dB ± 1 dB ( at 1 kHz ) |
| Input Impedance | Approximately 5 G ohm |
| Intrinsic Noise | 22.3 µVrms Maximum (Flat Weighting) |
| Distortion | 1%Maximum |
| Operating Temperature range | -10 to +50ºC |
| Operating Humidity range | 30 to 90% Relative Humidity (With No Condensation) |
| Power Supply Required | 15 to 25 V / 0.5 to 5 mA |
| Outer Dimensions | 12.7 mm x 61 mm |
| Mass | 30g |
♦ Notes:
There are no additional notes for this product.
The MI-3140 is a constant current type of preamplifier. It can be directly connected to an amplifier or data processing units which have a BNC (C02 type) connector. (Constant current power supply at the range from 2mA to 20mA is required.)
♦ Specifications
| Applicable Microphone | MI-1531 |
| Frequency Bandwith | 10 Hz to 100 kHz (Reference : 0.5 dB or less) |
| Intrinsic Noise | 6 μV or less (20 Hz to 20 kHz) |
| Distortion | 3% or less (Input effective voltage 8 V) |
| Operating Temperature range | -30 to 60°C |
| Operating Humidity range | 0 to 90% (With no condensation) |
| Power Supply Required | 15 to 25 V DC, 2 to 20 mA |
| Outer Dimensions | φ 6.35 ÁE44 mm |
| Mass | Approximately 5.5g |
♦ Notes:
There are no additional notes for this product.
MI-3170 is a preamplifier for 1/2-inch back-electret type condenser microphone. Adopting the CCLD method and BNC connector, various types of CCLD accepted amplifier, analyzer and data recorder can be connected directly. It can be used in wide operating temperature range (-30 to +80℃) when combined with the MI-1271 high-performance microphone. It is a low noise preamplifier that covers the measurement range of ultra low frequency of 1Hz.
♦ Specifications
| Applicable Microphones | MI-1271/1235/1433 |
| Distortion | 0.0316 % or less |
| Frequency Bandwith | 10 Hz to 40 kHz (+0.1 dB / -0.2 dB / 1 kHz as reference) 1 Hz to 40 kHz (+0.1 dB -1.5 dB 10 Hz as reference) |
| Input Impedance | 40 GΩ |
| Intrinsic Noise | A-weighting: 3.3 µV or less (Sound pressure conversion 8 dB) / MI-1271 sensitivity: -26 dB re. 1 V/Pa |
| Operating Temperature range | -30 to +80 ℃ |
| Operating Humidity range | 0 to 90 % (Not including microphone) |
| Power Supply | CCLD 2 to 4.5 mA / DC 18 to 26 V |
| Outer Dimensions | φ12.7 mm × 80.5 mm |
| Mass | Approx. 35 g (Not including microphone) |
♦ Notes:
There are no additional notes for this product.
