Vibration Measuring System

Charge Amplifier (VM-1980/3)

Compact 3 signal route charge amplifier
By connecting with piezoelectric accelerometer, it can output acceleration waveform in voltage.
Charge Amplifier (VM-1980/3)


■ Compact and light weight
■ Desk top or portable use
■ Usable as charge amplifier for vibration analysis system (wavestocker).

System composition

■ AC OUTPUT (±5 V at full scale) Waveform output to oscilloscope, stroboscope and data recorder etc.

System composition

Piezoelectric sensor Charge/share type VP-02S VP-113Ris here デData Acquisition Analysis System Wave Stocker (VM-0330/16)is here

Click on the part number to link to the respective product page


Item Specification
Input signal Piezoelectric accelerometer
Frequency range 0.4 to 20 kHz
Charge sensitivity setting range 0.01 to 999 pC / (m/s2)
Measurement range 3.3 to 66000 m/s2 (for charge sensitivity 1.5 pC / (m/s2)
*Subjected to change by charge sensitivity
Filter response Low frequency cut-off : Through, 3 Hz, 10 Hz (-18 dB / Oct)
High frequency cut-off : Through, 1 kHz, 10 kHz (-18 dB / Oct)
Calibration signal 156 Hz, ± 2.5 V Sine output
Alarm indication Over range : Red LED light-on (HOLD)
Under range : Green LED on / off (1 second HOLD)
Power supply DC12V (dedicated AC adapter)
Operational temperature /
humidity range
0 to +50 ゚C / 20 to 80 %RH (non-condensing)
Size / Mass 240 (W) x 150 (D) x 35 (H) mm / 0.6 kg

Standard composition

Item Quantity Notes
3 channel Charge Amplifier 1
Power Source Adapter 1 AC100 V 50 / 60 Hz 41 VA
Instruction Manual 1 Inspection certificate is attached on the last page


Item Notes
RS-232C Cable RS-232C communication cable (sensitivity, range, HPF, LPH can be set up by PC)
Pin jack output cable 0.3 m Single lead shield wire, Monaural pin jack-BNC
BNC output cable 1.5 m BNC-BNC cable 1.5 m (RG-58AU)
Connection cable For connection to 2 or more VM-1980

Outward dimensions

Outward dimensions