Bruel & Kjaer 4188 Free-field Microphone
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Bruel & Kjaer 4188 is a prepolarized free-field microphone with medium sensitivity (31.6 mV/Pa) for economy sound level measurements complying with IEC 61672 class 1.
Product details
| Model | 4188 |
| Manufacturer | Bruel & Kjaer |
| Category | Sound Level Meters |
| Availability | Made to order |
Description
Overview
The Bruel & Kjaer Type 4188 is designed for free-field measurements where an economy microphone with medium sensitivity is required. Being prepolarized, the Type 4188 can be used with both CCLD and classical preamplifiers.
Key Features
- Medium class sound level meters
- Equipment complying with IEC 61672 class 1
- Random-incidence measurements capability
- Sensitivity: 31.6 mV/Pa
- Frequency range: 8 Hz to 12.5 kHz
- Dynamic range: 15.8 to 146 dB
- Operating temperature: –30 to +125°C
- Prepolarized design
- Compatible with both CCLD and classical preamplifiers
Applications
- Portable sound measuring equipment
- Random-incidence sound field measurements
- Equipment certification and compliance testing
Specifications
| Sensitivity | 31.6 mV/Pa |
| Frequency Range | 8 Hz to 12.5 kHz |
| Dynamic Range | 15.8 to 146 dB |
| Operating Temperature | –30 to +125°C |
| Polarization Type | Prepolarized |
| Compatible Preamplifiers | CCLD and classical |
| Compliance | IEC 61672 class 1 |
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Bruel & Kjaer 4188 Free-field Microphone
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