2511 Bruel & Kjaer Vibration and Sound

Additional Features:

• Acceleration:  0.3 Hz; 0.002 - 100 ms-2     0.0002 - 10 g
• Velocity:  3 Hz; 0.02 - 1000 mm/s    0.001 - 100 in/s
• Displacement: 10 Hz; 0.0003 - 10 mm       0.00002 - 1 inch
• Accuracy : including accelerometer is ± 5 % absolute overall within linear ranges.
• High Pass Filter : 3-pole Butterworth, fall off 18 dB/octave
• Low Pass Filter : 2-pole Butterworth, fall off 12 dB/octave
• Detector: Quasi RMS: True reading indicated for sinusoidal signals with crest factor < 3
• Time Constants : 1 s and 10 s switchable
• Time Constants in Max Hold : 1 s
• Max Hold drift : < 10 % per 5 minutes with FSD
• Detector : True Peak-to-Peak :
• Time Constants : 1 s and 10 s switchable
• Max Hold drift : < 10 % per 30 minutes with FSD
• Rise Time : > 25 µs : 15 kHz LP filter
• Dynamic Range : for both detectors is 40 dB
• External Filter Sockets : 2 x BNC
• Signal level : 1 V PEAK or RMS
• Input Socket Impedance : 16 kΩ
• Output Impedance : 1 kΩ
• AC : 2.7 V RMS for FSD. Overload 6.8 V peak
• DC Log : 2 V for FSD, 0.05 V/dB. Overload 2.25 V
• DC Lin : 3 V for FSD. Overload 4.5 V
• Internal Oscillator : 80 Hz
• Battery : 4 x 1.5 V - D cells, IEC type R20
• Battery Life : 15 hours with Alkaline batteries
• Temperature Range : -10 °C to +50 °C
• Humidity Range : 0 to 95 %RH, non condensing
• Electromagnetic : fields up to 100 A/m increases noise floor < 14dB