TYPE 4189-B-001

½-inch free-field microphone with Type 2669-B preamplifier, 6 Hz to 20 kHz, prepolarized

Designed for high-precision, free-field measurements where a microphone with high sensitivity is required.

Angebot anfordern

Type 4189-B-001 is designed for high-precision, free-field measurements where a microphone with high sensitivity is required.

USE SCENARIOS

  • Precision sound measurement
  • Premium class sound level meters
  • Equipment complying with IEC 61672 class 1

THIS MICROPHONE IS A FACTORY-ASSEMBLED COMBINATION OF:

The unit is assembled in a clean-room environment and sealed together, after which it is assigned one single type number and one single serial number. This means that the combined unit has better precision and long-time stability, and is handled as one complete unit.

The unit also contains TEDS, which means that information about the serial number, type and sensitivity is stored within it.

THE BENEFITS OF USING A MICROPHONE-PREAMPLIFIER COMBINATION ARE:

  • Better stability and precision. Because the unit is assembled in clean-room facilities, there is no contamination.
  • Ease of use. Your analyzer front-end and software will automatically detect the type number, serial number and sensitivity because of the built-in TEDS technology. There is no need to enter this manually for every channel. 
  • Calibration integration. The TEDS technology means the microphone is automatically detected and identified by your data acquisition software, allowing it to be easily integrated with your calibration database.
  • Fewer errors. As your data acquisition software automatically knows the microphone type, serial number and sensitivity, manual inputs are greatly reduced – reducing human errors.
Capacitance
pF
Diameter
1/2
Dynamic range
15.2 – 146 dB
Frequency range
6.3 – 20000 Hz
Inherent noise
15.2 dB A
Lower limiting frequency -3dB
6.3 Hz
Optimised
Free field
Polarization
Prepolarized
Polarization voltages
V
Pressure coefficient
-0.01 dB/kPa
Sensitivity
50 mV/Pa
Standards
IEC 61094-4 WS2F
Temperature coefficient
-0.006 db/ºC
Temperature range
-30 – 100 C
Venting
Rear
Weight
gram
Sound field
Free-field
Input type
Classic
Microphone type
Free field