Vibration Measuring System


  • Short Delivery Time・Low Cost
  • Measurement Functions : Displacement / Velocity / Acceleration , Measurement (Amplitude) Range can be changeover.
  • Basic Functions
    ●Measurement Range: 2 Ranges
    ●Alarm Setting (Alarm / Trip)
    ●DC 4 ~20mA Level Output
    ●AC 3Vp-p, DC 2V Monitor Output
  • Compatible to Intrinsically safe Pickups


Specifications Vibration Switch Main unit

Frequency Range Acceleration:7Hz~8kHz 3dB(10Hz~5kHz±1dB)
Measurement Range Acceleration:10,100m/s2
Velocity:10,100mm/s rms
Displacement:100,1000μm p-p
Alarm output Upper Level individual setting
I c Contact Max Capacity DC30V 1A for each
Delay Time Setting
Automatic Reset
Signal Output

4~20mA DC (Max Load Resistance 300Ω)

Monitor Output 3Vp-pAC FS
Power 100VAC±10% 47~63 Hz
Power Consumption 5VA or smaller
Ambient Environment 0 ~ 50℃, 35 ~ 95%RH (No Condensation is allowed)
Outside Dimension・Mass W74×H90×D72 mm・Approx. 250g

Specifications of Piezoelectric Accelerometer

Model VP-A51 IW
Detection Piezoelectric Accelerometer
(with Build-in Pre-Amplifier)
Resonance Frequency 30kHz Approx.
Frequency Range


Voltage Sensitivity 5 mV/m/s2 (1G=9.80665m/s2
Measurable Max. Acceleration 900m/s2

0.5~10mA Constant Current, Voltage 12~30V

Output Impedance 50Ωor lower
Ambient Environment -30~110℃, (No Condensation is allowed)
Construction Isolated・Water Proof IP54
Material (Outer Case) Stainless Steel
Outside Dimension・Mass 17Hex×39mm, 46g Approx.
Cable Connection Upright TNC Connector

Standard Composition

Name Model Remark
Vibro Switch VM-90A
Pickup VP-A51IW Piezoelectric Accelerometer
Pickup Cable

With a Connector at the end to Pickup and a Water proof cap
Lengh:5 m (Note)
Standard Accessories
  • Setscrew
  • Hex Key Wrench
  • Sems Acrew
  • Instruction Manual


  • For setting a Pickup Hex socket head cap
  • Side-side 3mm
  • For installation of a Main Unit
  • With Test Certificate
(Note) Contact us for other length than 5m. Expandable up to 200m
* Refer to P.82 for Cable Length

Outward Size