14
Preparing to Perform an Alignment
Defining Flatness and Level
“Measuring level” usually means measuring flatness using a level. The proper definition of flatness is: a
surface is said to be flat to a tolerance if all the points on that surface fall within two parallel lines, or
planes, separated by the tolerance value.
For example, if the flatness tolerance is .0030 in. TIR, then all the points must deviate from zero by no
more than ± .0015 in.
There are two ways to measure flatness using our lasers:
•
Level the laser, using our high-accuracy, built-in level vials, and measure the surface relative to the
level laser plane
•
Use three reference points on the surface, align the laser (“bucking-in”) to those points and measure
the flatness relative to those three points.
After recording the data, it is best to use our Plane5 Software to analyze the data using the Least-Squares,
Best-Fit algorithm, which removes any slope error if the laser plane is not parallel to the surface, or if the
surface is not level but the laser plane is.
Setting Up the Targets
Targets may be mounted to a surface via the magnetic base. Target operation is automatic, with no
switches, wires or connectors, and flashing indicators provide immediate “off target” status. The wireless
targets transmit data every time the laser beam scans across the position detector and a new reading is
obtained. They rely on the laser to set the pace of the data transmission.
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.
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