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Vibration Instrument Charge Amplifier Model-4001b


This equipment is a micro-charge amplifier that amplifies charge signals virtually ranging from DC to 50 kHz. It is best suited for use in conjunction with a piezoelectric pressure sensor. Simple, easy-to-use instrument engineered with emphasis on basic performance. Discharge time constants selectable between LONG and SHORT. Built-in output calibration signal (supplied from the power supply unit). Compatible with various types of sensors, such as vibration, pressure, and force, as long as they are of the charge output type. Ready for concurrent use with the charge amplifier Model-4035.


Charge Amplifier   MODEL-4001B   4pc
Power Supply   MODEL-4001-10   1pc
Channel Case   MODEL-4035-21(4 Channel)   1pc
Instruction manual



Measuring Range   10.0-99.9pC/UNIT: 1,2,5,10,20,50,100UNIT/VOLT
Range Accuracy   with ±1.5% (at 80Hz)
Frequency Response   Range 10-100 ; DC-50KHz ±5%
    Range 5 ; DC-40KHz ±5%
    Range 2 ; DC-20KHz ±5%
    Range 1 ; DC-10KHz ±5%
Time Constant   Short: Range ×0.1sec(Registance109Ω)
    Long : Range ×1000sec(Registance1013Ω min.)
Cut Off   (0.16/TC)Hz
(Low Frequency)    
Linearity   ±0.1%
Noise Level   0.1pC RMS max.
Drift   ±0.03pC/S max.(Use DC Balance)
Reset Error   ±0.5pC max.
Charge Input Max.   ±100,000pC(Through Rate 5000pC/μs)
AC Output   ±10V max. or ±5mA max.
Output Impedance   100Ω
Output Cal Signal   0-10V DC (Use Power Unit)
Over Load Lamp   Go on when output voltage ±10.5V
Temperature Humidity   0-50°C,80%RH max.
Power   Charge Amp Unit: ±15VDC 20mA max.
    Use Power Supply Unit: AC100V±10V
Weight   Charge Amp Unit: 310g/CH
    Power Supply Unit: MODEL-4001-10: 800g
    4CH Case: MODEL-4035-21: 970g


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