ADASH Ltd.
Adash 4900 – Vibrio M
Further technical and contact information can be found at www.adash.com
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Response specification
Adash 4900 - Vibrio M
Calibration
Each unit is calibrated in AC voltage using the pure sine signal generator. All graphs and values below
are measured in such way. The accelerometer is not used for the calibration, because the frequency
response osci/-3dB (it is -30%-+40%) in 1-10000Hz range. This uneven property does not
allow using it for calibration. The voltage accuracy of instrument is high (+/-2.5% or +/-5%) comparing
with the accelerometer.
Vibration velocity measurement frequency response
-27
-24
-21
-18
-15
-12
-9
-6
-3
0
3
1
10
100
1000
10000
log F [Hz]
A
[
d
B
]
Measurement accuracy (10 mm/s RMS input signal) is +/- 2,5 % (5-500 Hz frequency range) and
+/- 5% (500 – 2000 Hz range).
Vibration acceleration measurement frequency response
-30
-27
-24
-21
-18
-15
-12
-9
-6
-3
0
3
0,1
1
10
100
log F [kHz]
A
[
d
B
]
Measurement accuracy (1 g RMS input signal) is +/- 2,5 % in 0,2 -20 kHz frequency range.
