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

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Building Vibration Measurement

TriaxialVibration Monitor	VM40C
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 100000 measurements Internet connection to the IoT platforms AskSensors and ThingSpeak for remote monitoring using a web browser SMS notification at alarm events Robust aluminum enclosure for autonomous field operation (IP67)	Triaxialer Vibration Monitor VM40C Keys and display VM40 at floor plate VM40-BP VM40 and accessories in carrying case cellular modem VM40_MODEM VM40C data in the IoT platform AskSensors SMS example Report printer VM40-PRINTER (battery powered) Radio-controlled beacon light VM40-R2 in warning condition Radio-controlled beacon light VM40-R2 in alarm condition Radio-controlled beacon light VM40-R2, battery compartment Radio-controlled beacon light, transmitter VM40-R1 Cable alarm beacon VM40-L (battery powered) Please click for more pictures
Monitored quantities	Peak value of vibration velocity or acceleration
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 indication	LEDs for warning/alarm, super bright relay output, n.o./n.c, max. 100 VDC / 2 A Radio-controlled beacon light VM40-R Cabled beacon light VM40-L
Cellular network interface	External cellular modem 4G (LTE B3, B8, B20); 2G (E-GSM-900, DCS-1800) HTTP communication with the IoT platforms AskSensors and ThingSpeak SMS at alarm condition, includes X/Y/Z values, date, time and device name
Interface	USB, PC software for archiving and report generation included
Power supply	Internal battery, 5 to 15 days (depending on mobile communication), charge duration approx. 10 h with mains plug adapter unlimited operation with connected USB supply voltage
	Data sheet VM40-C Data sheet Radio-Controlled Beacon Light VM40-R Instruction manual VM40C Instruction manual VM40C-IoT
	The latest version of the VM40 PC software you find on our download page. Firmware update

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	Please click for details
Required hardware components	IEPE / USB interface M312B, IEPE accelerometer
Measurands	Vibration velocity in mm/s, main frequency
Filters	Butterworth, 1 - 80 Hz and 1 - 315 Hz
	Data sheet Software description Quick start guide

Building Vibration Software Module	VM-PERS
Measurement and evaluation of vibrations to DIN 4150-2 with regard to persons in buildings Convenient user guidance Comparison with limits of DIN 4150-2 Simple report generation Detection of main frequency Saving of events and sample data when alarms were tripped Offline measurement	Please click for details
Required hardware components	IEPE/USB interface M312B, IEPE accelerometer
Measurands	Vibration velocity in mm/s, main frequency

	Data sheet Software description Quick start guide