Polytec OFV-511 - Start-up Procedure for OFV-303;-353


0DNLQ J0HDVXUHPHQWV
0DNLQJ0HDVX UHPHQWV
6WDUWXS
9LEURPHWHUZLWK6HQVRU+HDG2)9
6HWXS 1. Make sure that the key switch on the controller is in position O and the
beam shutter on the sensor head is in position OFF.
2. Fix the sensor head as appropriate with the M6 or 1/4" threaded mounting
holes onto a universal tripod with a fluid head. This ensures secure sup-
port and makes it easier to focus on the object.
3. Position the sensor head according to the information on optimal stand-off
distances in section 4.2.4.
4. Align the sensor head such that the laser beam points along the velocity
vector to be measured i.e. in general perpendicular to the surface of the
object.
6ZLW FKLQ JR Q 5. Switch the controller on by turning the key switch to position I. Please
allow 20 minutes for the laser to warm up before making measurements.
2QWKHIURQWRIWKHFRQWUROOHUWKH/ (' 32:(5OLJKWV XS3URYLGLQJWKH
FRQQHFWLQJFDEOHKDVEHHQLQVWDOOHGFRU UHFWO\WKH/ (' /$6(5RQWKH
VHQVRUKHDGDOVRO LJKWVXS/DVHUOLJKWLVQRW\HWHPLWWHGDVWKHEHDP
VKXWWHULVVWLOOFORVHG
6. Before now opening the beam shutter, remember the information on laser
safety provided in section 1.1!
7. Open the beam shutter on the sensor head.
7KHODVHUEHDPLVQRZHPLWWHGIURP WKHVHQVRUKHDG
0HDVXUL QJ 8. Focus the laser beam on the surface of the object.
7KHVLJQDO WRQRLVHUDWLRLVPD[LPDOLIWKHVLJQDOOHYHOGLVSOD\IXOO\OLJKWV
XS<RXFDQRIWHQVWLOOP DNHP HDVXUHPHQWVHYHQLIQRQHRIWKHEDU/ (' V
LVOLWXS7KHRXWSXWVLJQDOLQWKLVFDVHKRZHYHUFRQWDLQVPRUHQRLVH
9. If the signal level is low or highly fluctuating, change the stand-off distance
by 10cm as it may be that the sensor head has been positioned at an
unsuitable distance (refer to section 4.2.4).