The Bruel & Kjaer 2636 Measuring Amplifier is a versatile, high-precision instrument designed for comprehensive analysis of sound, vibration, and voltage signals. It functions as a calibrated amplifier and voltmeter, offering laboratory-grade accuracy for demanding measurement applications. The 2636 is designed to integrate seamlessly with Brüel & Kjær condenser microphones and preamplifiers to form a precision sound level meter system, and it is also suitable for use with piezoelectric accelerometers and other vibration transducers. Its robust design and optimized circuitry ensure reliable performance in challenging environments, making it suitable for acoustic testing, environmental noise monitoring, product development, and general laboratory use.
### Technical Specifications
* **Frequency Range:** 1 Hz to 200 kHz (Some sources indicate 0.1 Hz to 100 kHz)
* **Gain:** -30 dB to +100 dB
* **Measuring Ranges (Voltage):**
* 10 µV to 30 V Full Scale Deflection (FSD) directly
* 100 µV to 300 V FSD with supplied 10:1 attenuator probe
* Selectable in 10 dB steps
* **Input Impedance:**
* 1 MΩ (for Direct Input)
* 10 MΩ (balanced), 5 MΩ (unbalanced)
* **Maximum Input Level:** 220 V RMS (400 V Peak including DC component) without damage
* **RMS Averaging:** Selectable “Fast”, “Slow”, and 0.1 to 30 seconds (One source specifies “20s” averaging)
* **Peak Indication:** Max. Peak indication with signals of 25 ms or longer
### Electrical Characteristics
* **Filters:**
* 22.4 Hz High-Pass filter (with attenuation slope > 30 dB/octave or 100 dB/decade)
* 22.4 kHz Low-Pass filter (with attenuation slope > 30 dB/octave or 100 dB/decade)
* A, B, C, & D Weighting filters (In accordance with IEC standards)
* **Input Coupling:** AC or DC
* **Microphone Polarization:**
* 0 V (for prepolarized microphones)
* +28 V and +200 V (for condenser microphones)
* **Output Voltage Range:** ±10 V (peak)
* **Output Impedance:** 50 Ω (balanced), 25 Ω (unbalanced)
* **Total Harmonic Distortion:** < 0.05% (for frequencies up to 20 kHz)
* **Signal-to-Noise Ratio:** > 90 dB
### Interfaces and Connectivity
* **Direct Input:** Accepts standard B&K coaxial plugs for voltage and vibration measurements
* **Preamp. Input:** Accepts 7-pin plug of B&K Microphone Preamplifiers for sound measurements. This input also supplies stabilized voltages for powering B&K Microphone Preamplifiers. Proprietary connector used in older Brüel & Kjær hardware.
* **Digital Interface Bus:** A digital interface socket for connection to programmable desk top calculators or other digital instruments, expanding measurement applications. (Note: One source mentions this as an extra facility of the 2636 compared to the 2610).
* **Analog AC and DC Outputs:** For magnetic tape and graphic recording
* **USB and Ethernet:** Mentioned for data transfer and remote monitoring (Note: Specificity of these interfaces on the 2636 itself needs further verification from direct manufacturer documentation if required for procurement).
### Physical Characteristics
* **Dimensions:** 44 mm (H) x 215 mm (W) x 365 mm (D)
* **Weight:** 2.7 kg
* **Power Supply:** 100-240 V AC, 50/60 Hz
### Compatibility
* **Microphones:** Compatible with Brüel & Kjær condenser microphones and preamplifiers
* **Transducers:** Suitable for use with piezoelectric accelerometers and other vibration transducers
* **Companion Instruments:** Can be used with Brüel & Kjær microphone preamplifiers to form a precision sound level meter
* **Connectivity:** Proprietary 7-pin connector for microphone preamplifiers. Standard B&K coaxial plugs for direct input.
### Documentation
* **Service Manual:** Available for download
* **Instructions Manual:** Available
Why Choose Aumictech for Bruel & Kjaer 2636?
At Aumictech, we specialize in supplying high-end sound and vibration measurement equipment. Whether you need accurate signal transmission for acoustic testing, reliable data for environmental noise monitoring, or precise measurements for product development, our team ensures the Bruel & Kjaer 2636 delivers maximum performance for your application.
