Manfred Weber
Metra Mess- und Frequenztechnik in Radebeul e.K.
Since 1954

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Building Vibration

Triaxial Vibration Monitor
VM40A VM40B
  • For structural vibration measurement to DIN 4150-3, BS7385, SN 640312a, Circulaire du 23/07/86 and many other standards like Federal Transit Administration (FTA) standard.
  • Includes high-sensitivity triaxial accelerometer, electronics for signal conditioning, monitoring, recording and battery
  • Safe user guidance
  • Measurement of main frequency by continuous FFT
  • Time and event triggered recording for up to 100 000 measurements
  • VM40B with SMS notification at alarm events
  • Robust aluminum enclosure for autonomous field application
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Monitored quantities Peak value (ppvpeak particle velocity)
Measuring ranges Acceleration: 0.01 - 15 m/s²;
Velocity: 0.1 - 2400 mm/s at 1 Hz; 0.1 - 30 mm/s at 80 Hz (frequency dependent)
Frequency ranges (-3 dB) 0.8 - 100 Hz; 0.8 - 395 Hz; 5 - 150 Hz
Displayed data 3 peak values (X/Y/Z) or vector sum, main frequency, 50-line FFT spectrum
Alarm notification Warning and alarm LEDs,
relay output, change-over, max. 100 VDC / 2 A
SMS alarm function no GSM functions Quad band GSM,
SMS notification at alarm events, including the measuring values X/Y/Z, date, time and device name
Interface USB, PC software tool for conversion of stored data into csv format for Excel etc.
Power supply Internal rechargeable battery, 5 to 15 days operation (depending on GSM usage), charging approx. 10 h with mains adapter, unlimited operation by external USB power supply
Data sheet (250 kB)
Instruction manual (3 MB)
PowerPoint presentation about building vibration measurement with the VM40 (10 MB)
The latest version of the software data export from the VM40 to a PC can be found on our download page.
Firmware update
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PC Vibration Measuring System VibroMetra


Building Vibration Software Module

Building Vibration Measuring System VM-STRUC
  • Measurement and evaluation of vibrations in buildings to DIN 4150-3 for the determination of their effects on structures
  • Convenient user guidance requires only short training
  • Comparison with limiting values to DIN 4150-3
  • Simple generation of reports
  • Detection of the main frequency
  • Recording of vibration events and real-time signals
  • External Messengers
  • Offline measurement
  • Available as kit: VM-STRUC Kit with accelerometer KS823B

Highslide JS
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Required hardware components IEPE / USB interface M302 or M312, IEPE accelerometer
Measurands Vibration velocity in mm/s, main frequency
Filters Butterworth, 1 - 80 Hz and 1 - 315 Hz
Software description (online help)
Data sheet (400 kB)
Quick start guide (600 kB)
The latest version of VibroMetra software can be found on our download page.
VibroMetra can be started in the Simulator mode for testing.
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