RS 850-029 Manual

Instruction Leaflet
RS stock no. 850-029
Issued September 1998 9716
Laser spirit level
WARNING:This product contains a class 3b laser. Avoid
exposure to the laser beam. It is recommended
that laser warning signs or placards are placed
in the area of use.
Read all instructions prior to use. Failure to fol-
low recommended controls, adjustments or pro-
cedures may result in hazardous radiation expo-
sure.
•Always work with your back to the laser source, looking
towards the laser target.
•Never point the laser directly at other people or animals.
•Do not look back at the laser source directly or view the laser
source through optical instruments or mirrors.
•Always place a "laser warning placard" in the vicinity of work
area, to warn any passers by of possible laser hazard.
•Do not attempt to remove or tamper with the laser module.
DANGER
LASER RADIATION
AVOID EXPOSURE
Laser Radiation
emitted from aperture
AVOID EXPOSURETO BEAM
CLASS 3b LASER PRODUCT
< 5mW max. 670nm
CLASS 3b LASER PRODUCT
To BS(EN)60825 (1994), 21 CFR Part 1040.10
LASER BEAM
AVOID EXPOSURE
LASER RADIATION IS EMITTED
FROM THIS APERTURE
Danger
Laser
hazard
MADE IN CANADA
Complies with 21 CFR parts
1040 10 and 1040 11
LZ-
Mfg. Date
Serial No.
Figure 1.
A
BC
DE
F
G
H
I
J
K
L
A. Laser beam
B. Calibrating screws
C. On/off indicator light
D. Battery switch CDRH battery cap
on/off is an alternate to the beam
attenuator requirement
E. Vial adjustment screws
F. RS stock no. 850-029
G. Product identification
H. Manufacture & compliance
I. Warning label
J. Aperture label
K. DANGER: Class 3b laser. Read
instructions before use
L. Laser warning placard should be
placed in area of use
Operation instructions
The laser beam produces a bright spot on almost any reflective
surface, however it is most visible on light or red coloured sur-
faces. Dark colours absorb the light so the laser dot is less bril-
liant. Direct sunlight on a laser target will be too bright and will
overpower the laser beam. We would suggest shading the tar-
get in these applications.
Note: The on/off switch substitutes for the beam attenuator
requirement as described in the American food and
drug administrations department; centre for devices and
radiological health.
Note: When reading from the laser dot, always mark 1" below
the spot to be inline with the base of the laser level. As
the level is 1.980" (50.29mm) high, you are working with-
in a ±0.010" (0.254mm) tolerance.
Battery replacement
Unscrew battery compartment end cap, slide out the three bat-
teries. Replace with 3 x 'N' alkaline cell batteries, ensuring the
negative ends are inserted first. The positive end should be
towards the battery end cap.
Figure 2
A
A. Target laser spot
B. Laser
C. Laser level
B
C
1" (25.4mm)
Overall
height
1.980"

9716
Level calibration
The vial in the Starrett level is adjustable using the screws adja-
cent to the vial. It is possible to set for horizontal measurement
or to a deliberate incline.
Horizontal
Place the level on a reasonably flat surface. Note the position of
the bubble, reverse the level on the same surface. The level is
accurate when the bubble rests in the same position in both
directions. Do not overtighten screws during adjustment.
Incline
To set a 2% slope, place the unit on a level surface, note the bub-
ble should be centred between the lines. Measure 500mm from
one end of the level and raise the level 10mm at that point. Note
the bubble is at one end of the vial, adjust the screw that is fur-
thest from the bubble. Winding anticlockwise should centre the
bubble. You now have a 2% incline built into the level. To reset
to level, follow the setting instructions for horizontal use.
Laser alignment
The laser module is mounted in the centre of the spirit level cas-
ing. Alignment of the beam to the base of the level can be
checked by placing the level on a flat surface and marking the
spot where the laser beam hits a target. Turn the level upside
down; if correctly aligned, the laser will hit the same mark.
The laser unit is mounted internally on a spring suspension sys-
tem which allows for adjustment. Should adjustment be
required, turn the adjusting screw closest to the end of the level,
clockwise to raise the beam, or turn the second screw anti-
clockwise to raise the beam. To lower the beam follow the
above procedure but reverse rotation of screws. This procedure
allows for on-site calibration.
CAUTION: Do not overtighten screws.
Laser warning signs and placards
Warning signs are detailed in BS 5378: pt 1: 1980.
This is an example of a laser warning sign, usually yellow and
black on a white background. Warnings of this type should be
placed in vicinity of your work area.
DANGER
Laser
hazard
RS Components shall not be liable for any liability or loss of any nature (howsoever caused and whether or not due to RS Components’ negligence) which may result
from the use of any information provided in RS technical literature.
RS Components, PO Box 99, Corby, Northants, NN17 9RS Telephone: [phone]
An Electrocomponents Company © RS Components 1998
Figure 3