Influences On Accuracy - Empire eLGC Manual Del Operador

ACCURACY FIELD CHECK
Perform the Accuracy Field Check
NOTICE
procedure immediately upon unboxing
of each new Laser Level and before exposure to
jobsite conditions. See "Accuracy Field Check"
for information. Should any deviation from listed
product accuracy be found, please contact Empire
Level Customer Service. Failure to do so could result
in rejection of warranty claim.

Influences on Accuracy

Ambient temperature gradients can impact laser
accuracy. For accurate and repeatable results, the
following procedure should be conducted with the
laser elevated off the ground and placed in the center
of the working area.
Abusive treatment of the Laser Level, such as exces-
sive impacts from drop, can also lead to deviations
in product accuracy.
Therefore, it is recommended to conduct the Field
Check procedure after any impact or before complet-
ing any critical jobs.
Horizontal Height Accuracy
A free measuring distance of approximately 66' on a
firm surface between two walls or structures A and
B is required for this check.
It is also suggested to mount the Laser Level to a
commercially available Tripod for easy adjustment.
1. Securely mount the tool within 1' of wall A.
A
1'
2. Turn the tool to
3. Direct the front laser beam against the nearest
wall A and allow to self-level. Mark the center of
the laser cross on the wall (point I).
4. Rotate the tool 180° without changing the height,
allow it to self-level, and mark the center of the
laser cross on the opposite wall B (point II).
A
180
66'
ON.
5. Move the tool within 1' of wall B. Turn the tool to
ON and align the laser cross in the general
direction of point II on wall B.
A
6. Adjust the height of the tool (using the tripod or
by adding shims, if required) to align the laser
cross directly onto point II on wall B. Allow the
tool to self-level.
7. Rotate the tool 180° without changing the height,
allow it to self-level, and mark the center of the
laser cross on wall A (point III). Point III should
be aligned as vertically above or below point I on
wall A as possible.
A
B
d
8. The distance between points I and III on wall A is
the height deviation (d) of the tool. This distance
should not exceed 1/4" (max.) at 33' (1" at 132').
For the Measuring distance of 2 x 66' = 132',
the maximum allowable deviation (d) is:
132' x ±1/4" ÷ 33' = ±1"
Horizontal Leveling Accuracy
A free measuring space of approximately 33'x33' on
a firm surface between two walls or structures A and
B is required for the check.
It is also suggested to mount the Laser Level to a
commercially available Tripod for easy adjustment.
B
Securely mount the tool on one side of the room and
centered between walls A and B. Direct the laser
lines toward the other side of the room such that the
horizontal line appears on both walls A and B. Allow
the laser to Self-Level.
4
B
1'
B
180