TEDS Microphone
MI-1271M12
The MI-1271M12 TEDS Microphone consists of 1/2-inch Free-field electrets-type condenser microphone and preamplifier conforming to the IEC 61094-4 Type WS2F.
By adopting the titanium vibrating membrane of the microphone and improving electrets performance, 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℃.
The MI-1271M12 TEDS Microphone can be used by directly connecting to a device equipped with CCLD (Constant Current Line Drive) with BNC cable. Also, when connected to TEDS applicable device, information such as sensitivity is automatically loaded without troublesome calibration. As a result, reliable measurement and time reduction are possible.
*TEDS specification: IEEE 1451.4: 2004 (Template: Microphone with built-in Preamplifier Ver.1.0)
•TEDS applicable model without troublesome calibration
•Capable of long-term stability and wide frequency range of 1 Hz to 20 kHz by adopting titanium vibrating membrane and improving electrets performance.
•Wide temperature range of -30℃ to +80℃
•Can be directly connected to the device equipped with the CCLD (constant current line drive) with BNC cable.
Response type | Free sound field | |
---|---|---|
Sensitivity (1 kHz) | -26 .0± 1.5 dB re.1 V/Pa (50 mV/Pa) | |
Frequency range (reference: 1 kHz) | 1 Hz to 20 kHz (±2 dB) | |
Maximum sound pressure level (250 Hz, total harmonic distortion 3%) | 135 dB or more | |
Intrinsic noise level | A-weighting: 14.0 dB (typical value) Z-weighting: 34.3 dB (typical value) |
|
Static pressure characteristics (250 Hz) |
-0.013 dB/kPa | |
Temperature characteristics (250 Hz) |
+0.005 dB/K | |
Humidity characteristics (250 Hz) |
-0.0004 dB/% | |
Long-term stability | 0.03 dB/year or less (at reference environmental condition) 0.30 dB/year or less (80 ℃, 23% RH) |
|
Operating temperature range |
-30 to +80 ℃ |
|
Operating humidity range |
0 to 90% RH (with no condensation) |
|
Storage temperature range |
-40 ℃ to +70 ℃ |
|
Storage humidity range |
0 to 90% RH (with no condensation) |
|
Power source | CCLD (Constant Current Line Drive) 2 mA to 4.5 mA (rated value 4 mA) 18 V to 26 VDC (rated value 24 V) |
|
Output connector | C02(BNC) | |
Weight | Approx. 41 g | |
Accessory | Calibration chart×1 Instruction manual ×1Preamplifier holder (MI-0301)×1 |
|
Reference environmental condition | 23 ℃, 50% RH, 101.3 kPa | |
Applicable standard |
CE marking * | • EMC Directive 2014/30/EU Standard EN61326-1 • RoHS Directive 2011/65/EU Standard EN IEC 63000 |
TEDS ** | IEEE 1451.4: 2004 (Template: Microphone with built-in Preamplifier Ver.1.0) |
* Applicable cable length is 30 m or less. Please note that if you extend it more than 30 m, it cannot be conformed to CE marking.
** For TEDS compatibility of measuring device and measurement amplifier to be connected, please contact your nearest distributor or send us an email (overseas@onosokki.co.jp).
Reviced:2017/12/27