Bruel Kjaer 2231

| Attribute | Value |
|---|---|
| Measurement Range | 25 dB to 140 dB |
| Frequency Range | 20 Hz to 20 kHz |
| Weighting Filters | A, B, and C frequency weighting |
| Detector Type | RMS detector with Fast and Slow time weightings |
| Display Type | Digital LCD display |
| Microphone Type | Condenser microphone, Type 4155 or 4165 compatible |
| Standards Compliance | IEC 651 Type 1, ANSI S1.4 Type 1 |
| Power Supply | 4 x AA batteries or external DC power supply |
| Output Connections | AC and DC analog output connectors |
| Operating Temperature | -10°C to +50°C (14°F to 122°F) |
| Model | Kjaer |
|---|
The Brüel & Kjær 2231 is a modular sound level meter featuring interchangeable modules, enabling tailored measurement functions. It delivers reliable and repeatable sound pressure readings with durable construction for both laboratory and field environments.
Its straightforward operation and flexible setup make it ideal for environmental monitoring, research, and industrial applications. Known for long service life, it ensures consistent acoustic measurement performance.
Testwall can supply the used Brüel & Kjær 2231, fully tested. With expert support and global delivery, Testwall ensures high-performance instrumentation with unmatched reliability and service quality. Please contact us directly if you need calibration or repair of the Brüel & Kjær 2231.




