9
The Precision Level Vials
Reading the Precision Level Vials
Secure the laser base to a metal surface by turning the locking
magnetic base ON. Once the laser is in position, power it on
and light the level vials (if necessary) using the LEVEL switch
located on the control panel. Use the adjustment knobs to bring
the bubbles to the center of both vials (see Figure 4).
When both the PITCH and ROLL vials are reading level, a
level beam can be scanned at 360 degrees with a .0003 in.
deviation per 10 ft.
Reading the L-740SP Split-Prism Level Vials
Once the laser unit is in position on the base, connect
power to the base power supply input jack and press the
red button to light the precision level vials. Use the
coarse
alignment micrometers to bring the bubbles to the
center of the vials.
When the bubbles are close to the center, use the
fine
adjustment micrometers to align the bubble halves to
each other in the viewing prism window (see Figure 5).
When both the long axis and short axis vials are reading
level, a level beam can be scanned at 360 degrees with a
.0003 in. deviation per 10 ft.
Calibrating the Level Vials
Note 1:
This procedure calibrates only one level vial at
a time and must be repeated for the other axis.
Note 2:
It is very important to warm up the laser for at
least 30 minutes before starting this procedure. It is also
very important to level both the Pitch and Roll axis level
vials during this procedure. Failure to do this makes it
nearly impossible to calibrate the levels.
The calibration procedure involves a series of steps to adjust the laser beam to be level to earth. Because
the leveling process is subject to so many variables, repeat the procedure to check for accuracy once the
initial readings are taken and adjustments are made. A typical sequence would be as follows:
•
Determine
the set point and set the first axis.
•
Use
the set point value to set the second axis.
•
Check both the first and second axes. Reset the levels if necessary.
•
If the levels are reset, make a final check to determine if the laser level error is acceptable.
Figure 4 –
Precision Level Vial entered (top) and off
center (bottom)
Figure 5 –
L-740SP Split-Prism Level Vial Assembly for L-
740 Series Lasers
Please Note!
Our level vials are designed to be calibrated by the customer. We cannot guarantee that the level
vials are calibrated when you receive the equipment because of movement during shipping. Please
follow the procedure below specific to the level vials on your laser.
