The DHF-2 charge amplifier works in conjunction with a piezoelectric accelerometer or force sensor to measure the vibration or shock acceleration of a mechanical device whose output voltage is proportional to the amount of charge generated on the sensor.
The instrument has a wide range of applications in aerospace, defense industry, transportation, construction industry, machinery manufacturing, power, explosion, impact and other places where it is necessary to measure mechanical vibration and impact.

Technical indicator name parameter
LCD screen parameters
128×64
Input amount ±106pC
Charge sensitivity range
1.00 to 19.99pC/Unit
Amplifier gain binning charge sensitivity is adjustable from 1.00 to 10.00
0.1, 1,10, 100, 1,000 (mV/Unit)
The charge sensitivity is adjustable from 11.00 to 19.99.
1,10, 100, 1,000,10,000 (mv/Unit)
Frequency range and filter frequency range
0.3Hz to 100kHz
Upper limit filtering
0.3, 1, 3, 10, 30, 100 (kHz) (-3dB ± 1dB, attenuation rate: -12dB / OCT)
Lower limit filter
0.3,1,3,10,30,100 (Hz) (-3dB±1dB, attenuation rate: -6dB/OCT)
Output output current
0 to 5 mA (peak)
The output voltage
0 to ±10V (peak)
The level overload indicates that when the signal amplitude exceeds ±10V, the overload lamp is on; the signal amplitude falls back and the overload lamp automatically goes out.
Noise level ≤ 5μv (maximum gain file is converted to input)
Harmonic distortion ≤1%
Accuracy when the signal frequency is 160Hz: ≤±1.5%
Power supply ~ 220v, or DC power supply: +12v (1.0A current)
Dimensions
90×150×202(mm)
Weight about 1kg
Working environment working temperature
0°C～+40°C
storage temperature
-55°C～+85°C
Relative humidity
< 80%

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