| 1. |
What
does the system measure? |
| 2. |
Can
it also measure displacement and acceleration?
|
| 3. |
How
would I know if the specs of the VibroMet™ 500V meet my measurement
requirements?
|
| 4. |
Do
I need to focus the laser beam to each target distance? |
| 5.
|
What
options do you offer to measure "hard to see" surfaces? |
| 6. |
Can
the VibroMet™ 500V measure vibration frequencies that are larger
than 20 kHz? |
| 7. |
Can
I test a VibroMet™ 500V to make sure that it meets my measurement
needs? |
| 8. |
How
long can I rent a VibroMet™ 500V? |
| 9. |
Can
the VibroMet™ 500V tolerate changes in signal amplitude, which
may occur when particles or other obscurants block the laser beam?
|
| 10. |
Is
the laser light visible?
|
| 11. |
What
is the Safety laser class? |
| 12 |
Do
I need to mount the system on a stable table?
|
| 13. |
How
much training is required to operate the VibroMet™ 500V?
|
| 14. |
How
does the user view the VibroMet™ output signal?
|
| 15 |
What
accessories does MetroLaser offer for the VibroMet™? |
| |
| 1. |
What does
the system measure?
The VibroMet™ 500V measures the velocity and frequency of
vibration at a point on a vibrating target. One of the VibroMet™
500V output signals is the velocity of the target measured over
time.
Return
to Top
|
| 2. |
Can it also
measure displacement and acceleration?
Yes. Both
of these parameters can be obtained in software by direct integration
and derivation of the velocity.
Return
to Top
|
| 3. |
How would
I know if the specs of the VibroMet™ 500V meet my measurement
requirements?
There are
three parameters that define the measurement requirements:
- Distance
to target - For good reflecting surfaces the VibroMet™
500V can measure targets at any distance between 1 cm and 5 meters.
If the surface is not a good reflector, then the maximum distance
may be less than 5 meters.
- Frequency
of vibration - The VibroMet™ 500V can measure frequencies
from DC to 20 kHz. There is also a version that will measure up to 50KHz.
- Velocity
of vibration - This parameter has a maximum value of 1.0 m/s
and may be calculated as follows: V = 2 PI * amplitude * frequency.
For example if the amplitude of vibration were 10 microns and
the frequency of vibration 1 kHz, then the velocity would be
0.063 m/s.
Return
to Top
|
| 4. |
Do I need
to focus the laser beam to each target distance?
No. The VibroMet™ 500V uses a collimated beam and does not
require a focusing lens, therefore it is easy to change the target
distance anywhere in the range between 1 cm and 5 meters.
Return
to Top
|
| 5.
|
What options
do you offer to measure "hard to see" surfaces?
For surfaces with poor reflectivity we offer an optional telescope
that would focus the beam on the surface and augment the collected
signal. In this case the laser beam must be focused to each target
distance to optimize the return laser light. Another option is
to increase the reflectivity of the surface with white or retro-reflective
paint or paper.
Return
to Top
|
|
6.
|
Can
the VibroMet™ 500V measure vibration frequencies that are larger
than 20 kHz?
Yes. Options are available to use the VibroMet 500V at frequencies up to 80 kHz.
Return
to Top |
|
7.
|
Can
I test a VibroMet™ 500V to make sure that it meets my measurement
needs?
Yes. We offer
very affordable rental options, which are applied to the purchase
price when you purchase the system.
Return
to Top
|
| 8. |
How
long can I rent a VibroMet™ 500V?
We offer attractive 1-week terms and you can rent a system for many weeks. Please check with our sales department.
Return
to Top
|
| 9. |
Can the VibroMet™
500V tolerate changes in signal amplitude, which may occur when
particles or other obscurants block the laser beam?
Yes. The VibroMet™
500V measures optical phase changes due to target vibration. This
optical phase change is manifested as a frequency modulated signal
upon mixing the target signal with the reference beam local oscillator.
Thus signal amplitude fluctuations will have very little effect
on the signal frequency provided that the amplitude of the signal
stays above a reasonable threshold. If the signal amplitude falls
below the threshold then the instrument will experience a "dropout."
The VibroMet™ 500V software will look at regions between dropouts
and report the valid data.
Return
to Top
|
| 10. |
Is the laser
light visible?
There are actually two lasers in the VibroMet 500V. The laser making the measurement is an infrared 780nm laser. The second laser is a red 650nm laser that can be turned on and off by a switch on the back of the laser head. This red laser is used to see where the measurement is being taken. The Infrared laser
light has a deep red color that can readily be seen on clear targets.
We also provide, at no additional charge, a laser light card to
augment the visibility of the laser for those targets that are
hard to see.
Return
to Top
|
| 11. |
What
is the Safety laser class?
The infrared laser is class III-b.
The total infrared laser power out of the VibroMet™ 500V is about 12
mW at a wavelength of 780 nm. The red laser is class II and has less than 1mw of 650nm laser light.
Laser Safety FAQ's
Return
to Top
|
| 12. |
Do I need
to mount the system on a stable table?
No. In most
applications the system may be mounted on a tripod.
Return
to Top
|
| 13. |
How much training
is required to operate the VibroMet™ 500V?
Most customers
are able to operate the system within hours after receiving it
just by following some simple instructions. The system is a plug
and play device.
Return
to Top
|
| 14. |
How does the
user view the VibroMet™ output signal?
The output
signal can be viewed on an oscilloscope, a spectrum analyzer,
or can be digitized with a computer data acquisition system. MetroLaser
offers data acquisition boards and software for acquiring, analyzing,
and displaying the data.
Return
to Top
|
| 15. |
What
accessories does MetroLaser offer for the VibroMet™?
MetroLaser offers a rugged three-axis tripod, a data acquisition board, and signal processing software.
Return
to Top
|
