Product Description
Type 4188 is designed for free-field measurements where an economy microphone with medium sensitivity is required. Being prepolarized, Type 4188 can be used with both CCLD and classical preamplifiers.
Use Scenarios
- Medium class sound level meters
- Equipment complying with IEC 61672 class 1
- Random-incidence measurements
- Portable sound measuring equipment
- Being prepolarized, Type 4188 is especially well suited for battery-operated equipment or for operation in environments with high humidity.
Specifications
- Capacitance: 12 pF
- Diameter: 1/2
- Dynamic range: 15.8 – 146 dB
- Frequency range: 8 – 12500 Hz
- Inherent noise: 14.2 dB A
- Lower limiting frequency -3dB: 5 Hz
- Optimized: Free field
- Pressure coefficient: -0.021 dB/kPa
- Sensitivity: 31.6 mV/Pa
- Sound field: Free-field
These microphones are "new" in the original package accompanied with mfg Calibration Data Sheet.