Microphone & PreAmplifier Combinations
Type 4954-A-011 ¼-Inch Free-Field Microphone With Type 2670 Preamplifier, 3 HZ TO 80 KHZ, Prepolarized
Type 4954-A-011 is designed for high-level and high-frequency measurements. The use of a laser welded stainless steel diaphragm and a stainless steel protection grid, make this microphone capable of withstanding rough environments.
USE SCENARIOS
- High-frequency measurements
- High-level measurements
- Cost-effective measurements
THIS MICROPHONE IS A FACTORY-ASSEMBLE COMBINATION OF:
- Microphone: Type 4954
- Preamplifier: Type 2670
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: 1/4
Dynamic range: 34 – 164 dB
Frequency range: 3 – 80000 Hz
Inherent noise:34 dB A
Lower limiting frequency -3dB: 3 Hz
Optimised: Free field
Polarization: Prepolarized
Polarization voltages: V
Pressure coefficient: -0.007 dB/kPa
Sensitivity: 2.8 mV/Pa
Standards: IEC 61094-4 WS3F
Temperature coefficient: 0.009 db/ºC
Temperature range: -20 – 80 C
Venting: Side
Weight: gram
Sound field: Free-field
Input type: Classic
Microphone type: Free field
