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Sound and Vibration Instrument Hire and Calibration

Bruel & Kjaer 2635 Specifications


Bruel & Kjaer 2635 Charge Amplifier
B&K 2635 : Charge Amplifier and Signal Conditioner £ 12 a day *
 
Charge Amplifier Input :
10-32 UNF socket and BNC socket
 
Sensitivity Conditioning :
0.1 to 10.99 pC/ms-2
3 x digit dial up switches.
 
Amplifier Sensitivity :
0.01 mV to 10 V/pC corresponding to
-40 to +80 dB with transducer capacitance of 1 nF
 
Calibrated Output Ratings : Selectable in 10 dB steps
Acceleration   0.1 mV to 1 V/ms-2
Velocity 10 mV to 100 V/ms-1  
Displacement   0.1 mV to 10 V/mm
 
Signal Output : 10-32 UNF socket and BNC socket
Max Output : 8 V peak
Output Impedance : < 1 Ω
DC Offset : < ± 50 mV
 
Frequency Ranges : -10 % limits quoted
Acceleration   0.2 Hz - 100 kHz   or   2 Hz - 100 kHz
Velocity 1 Hz - 10 kHz   or   10 Hz - 10 kHz
Displacement   1 Hz - 1 kHz   or   10 Hz - 1 kHz
 
Filter - Low Pass : Switchable - 10 % frequency limits of 100 Hz,  1 kHz,  3 kHz,  10 kHz,  30 kHz and > 100 kHz with attenuation slope of 40 dB/decade
 
Inherent Noise : 2 Hz to 22 kHz
0.005 pC referred to the input with maximum sensitivity and 1 nF transducer capacitance
 
Test Oscillator :
160 Hz sinusoidal, factory preset for test level of 1 V
 
Overload Indicator :
Overload LED light when input or output of amplifier is overloaded by high peak levels
 
Rise Time :
~ 2.5 V/µs
 
Environmental :
Temperature Range : -10 to +55 °C
Humidity : 0 to 90 %RH, no condensation
 
Internal Power Supply :
Batteries : 3 x 1.5 V, IEC Lr20, alkaline cells
Battery Life : 100 hours, approximately
 
Dimensions : height = 133 mm, width = 70 mm and depth = 200 mm
Weight : 1.45 kg including batteries
 
E&OE - specifications subject to change without notice.