Profound VIBRA vibration monitoring

Profound VIBRA series

With the new VIBRA range, Profound launched its newest generation of vibration monitoring systems.

The Profound VIBRA is a robust, lightweight, stand-alone system for the monitoring of vibrations which can cause damage to buildings or sensitive equipment.

Profound has developed 3 different VIBRA's to meet the individual requirements of international clients: the VIBRA, the VIBRA-sbr and the VIBRA+ with GSM-option, smart alarm and automatic inclination measuring.

Independent of the chosen version of the VIBRA, it speaks for itself that the system is of national and international standards, such as the SBR 2002, the DIN 4150 and the DIN 45669.

Operation

Setting up the system on site is easy: attach the 3-dimensional sensor to the structure to be monitored, switch on the system and start measuring. During measuring the VIBRA displays date, time and the current vibration value of the 3 directions.

It is also possible to view the remaining battery capacity, available memory, frequency of all directions together with the highest peak value, maximum vibration levels. The VIBRA can also be left unattended to operate continuously for weeks.

Interpretation of measurement results

Once monitoring has been completed the VIBRA is connected via USB to a (portable) Windows computer for full analysis.

VIBRA vibration monitoring unit			VIBRA	VIBRA-sbr	VIBRA+
Display		4 lines; display backlight; anti-reflex coating, anti-scratch
Storage capacity		4 MB
Storage interval		2, 5, 10, 20, 30, 60 s; 1, 2, 5, 10 min.
Protection rating		IP65 according to DIN 40 050/IEC 529
Size		216 x 160 x 50 mm
Weight		2 kg
Trace option		Velocity versus time curve
AD converter		24 bits delta sigma data conversion
Resolution display		0.01 mm/s
Resolution AD converter		0.001 mm/s
DIN	Accuracy	DIN 45669-1 June 1995, accuracy class 1
	Frequency characteristics	Min. (-3 dB): 0.8 Hz (12 dB/oct.) Max. (-3 dB): 100 Hz (12 dB/oct.)
	Dominant frequen- cy determination	Zero crossing method
		FFT (Hanning window)
	Data processing	DIN 4150-2
		DIN 4150-3
SBR	Accuracy	SBR 2002 Part A and B 0.85  delta  1.15
	Frequency characteristic	Part A: Min. (-3 dB): 0.8 Hz Part A: Max. (-3 dB): 125 Hz Part B: Min. (-3 dB): 0.8 Hz Part B: Max. (-3 dB): 100 Hz
	Dominant frequen- cy determination	Method I Method II
	Data processing	SBR Part A SBR Part B
Sample frequency		1024 Hz
Velocity data save level		Adjustable between 0.01-100 mm/s (or always)
Alarm level		Adjustable between 0.01-100 mm/s (or none)
Clock stability		± 5 minutes per year at 25°C
Temperature range		-20°C to +60°C
Smart alarm level		Frequency dependent maximum velocity, complying with SBR and DIN levels
Optical signal device		Flashing alarm beacon (via USB cable)
External power		5 Volt supplied to the VIBRA USB connector
GSM/GPRS/internet mail function		Wireless datatransmission
Maximum displacement / u /		ux uy uz per time interval
VIBRA Geophone			VIBRA	VIBRA-sbr	VIBRA+
		3 channel sensor (x-, y-, z-direction)
		Digital ID
		Geophone detection
		Digital correction of sensitivity
		Digital correction of fres and Q
		Automatic inclination check
		Automatic calibration check
VIBRA PC software			VIBRA	VIBRA-sbr	VIBRA+
Windows 2000/XP
Processing according to SBR guidelines
Processing according to DIN guidelines
Extensive graphical data presentation including precise date time axis. Various data exporting options, e.g. as ASCII-(*.cvs) files.