PILE Thermal Integrity Profiler
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Overview

The VM-40 acquisition system is designed to monitor vibrations in the building environment using an integrated triaxial seismic accelerometer.

The VM-40 records building vibrations in real time using a triaxial seismic accelerometer, displaying them graphically on a display. Threshold values ​​are set according to ISO 4866, DIN 4150-3, UNI 10985, and UNI 9916 standards. The acquired data can be transferred to a PC for generating a final report. Equipped with a USB output and a connector for controlling external devices, the VM-40 can be equipped with a GSM module to send alarms if vibration thresholds are exceeded. It is portable, lightweight, compact, and durable, ensuring practical and easy use for the operator.

VM-40 – Triaxial Vibration Monitor

Acquisition system for measuring building vibrations induced by external sources.

  • Portable system that uses a triaxial seismic accelerometer.

  • Records and displays vibration signals in real time with threshold values set according to standards.

  • Data can be transferred to PC via USB for final reporting.

  • Optional GSM module allows SMS alarm notifications.

  • Compact, lightweight, and robust aluminum housing (splash-resistant).

Standards Compliance

The VM-40 complies with major international standards:

  • ISO 4866

  • DIN 4150-3

  • UNI 10985

  • UNI 9614

  • UNI 9916

Key Features

  • Triaxial vibration measurement in orthogonal axes per DIN 4150-3.

  • Real-time recording of vibration signals.

  • LCD display for vibration value, frequency, and FFT spectrum.

  • SMS alerts when thresholds exceeded (with GSM module).

  • USB interface for data transfer.

  • Rechargeable NiMH battery ensures long autonomy.

  • Relay output for external device control (on/off).

  • Rugged case, easy transport and installation.

Alarm & SMS Notifications

  • Stores threshold exceedance data (peak frequency, velocity/displacement, acceleration).

  • Sends SMS notifications to up to 10 phone numbers.

  • Events logged for report printing.

  • Relay output allows triggering of external devices (lights, sirens).

Applications

  • Vibration monitoring in compliance with DIN 4150-3 and UNI 9916.

  • Evaluation of building vibration effects.

  • Exposure analysis for sensitive structures.

  • Monitoring vibrations from traffic or construction works (drilling, excavation).

Measurement Procedures

  • Automatic selection of measurement method via internal guide.

  • Acquisition of peak particle velocity (PPV) in all directions.

  • Resonance frequency detection.

  • Storage of >100,000 events with time/date.

  • Real-time signal logging and event annotation.

  • Relay output up to 100 VDC / 2A.

Technical Specifications

Parameter VM-40A VM-40B
Measured Values Peak, velocity, instantaneous frequency Peak, velocity, instantaneous frequency
Standards DIN 4150-3, BS 7385, SN 640312a Same
Measurement Range Acceleration: 0.01–15 m/s², Velocity: 0.1–2400 mm/s Same
Frequency Range 0.8–150 Hz 0.8–150 Hz
Display LCD, 128×64 pixels, FFT spectrum, battery level, alarms Same
Storage >100,000 events, timestamped Same
USB Interface Yes Yes
GSM Modem Optional Optional
Battery NiMH 4.8 Ah, 10–15 hours Same
Dimensions 150×140×80 mm Same
Weight 2.0 kg 2.0 kg
Operating Temp. –20 °C to +60 °C Same

vm40

Kit Includes

  • VM-40A / VM-40B vibration monitor

  • Battery charger

  • Carrying case

  • Optional tripod plate with screws

  • Optional earphone adapter

Warranty & Support

  • 24 months warranty

  • Service provided by DRC at authorized centers

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