imex 99DG User manual

IMEX 99DG
DUAL GRADE LASER
OPERATION MANUAL

IMEX 99DG DUAL GRADE LASER
OPERATING MANUAL
Introduction
Congratulations on your purchase of a quality Imex rotating laser.
These lasers have been designed for the professional and
incorporate the latest laser technology with a robust and simple
construction for years of trouble-free use.
These instruments are suitable for all interior and exterior general
construction levelling applications and feature quick set-up,
excellent accuracy and ease of use.
The following operating manual has been designed to assist you
in getting the optimum performance from your instrument. Please
read carefully before using the instrument, and observe all safety
conditions.

IMEX 99DG DUAL GRADE LASER
OPERATING MANUAL
Contents
Page
1. About the Instrument –Functions 3
2. Basic Operation 5
3. Grade Mode Operation 7
4. Scan Mode Operation 9
5. Vertical Operation 10
6. Batteries 11
7. Checking Accuracy 12
8. Trouble Shooting 14
9. Warranty, Service and Care 15
10. Technical Specifications 16

1. About the Instrument - Functions
1.1 Instrument Overview
Laser Module Handle Laser Detector
Beam
Windows
Control
Panel
Staff Bracket
Battery recharge outlet Rubber Sheathed base
1.2 Control Panel
e.
a. f.
b. g.
c. h.
d. i.
j. k. l.
a) Grade activation & display light
b) x/y axis selection
c) Rotation speed control
d) On/Off switch
e) Grade display setting
f) Grade setting buttons & scan direction
g) Grade setting buttons & scan direction
h) Scan mode
i) Hi-out of level alert
j) Rotation speed indication
k) Battery level light
l) Grade slope indication

1.3 Standard Function
The instrument is equipped with a semi-conductor diode with
wavelength of 635nm. The laser beam is clearly visible, and the laser
module rotates freely to form a laser scanning surface.
In the upright position, ideally placed on a standard aluminium tripod
the laser beam emits a horizontal line which can be detected by the
instruments receiver.
On the 99DG, if the unit is placed in a horizontal position, the laser
emits a vertical beam.
A plumb spot at 90º to the main beam is emitted from the base and
the top of the instrument.
Horizontal operation Vertical Operation
A remote control is provided which works on an infra-red system up to
20m-30m from the instrument. The control panel has the same
functions as the control panel on the instrument itself.

2. Basic Operation
2.1 Standard Set-up Levelling (see dia over page)
Place unit on tripod and roughly set up so that the instrument is within
5% of level.
Switch the unit on (d).
The unit will then level itself and the diode will emit a beam and
commence spinning. The instrument will commence spinning at its
maximum speed of 600rpm.
If the unit is bumped or moved the laser will stop and the out of level
warning symbol will flash. After the instrument has re-levelled itself the
laser will recommence spinning.
- Warning –If the unit has been bumped or moved and the unit
recommences spinning, the instrument may not automatically be at the
original level. Re-check on a datum point.
2.2 Hi-Alert Mode: Using the Hi alert mode, button (i), if the laser is
bumped or moved it will not re-level & recommence spinning until you
press button (i) again, therefore you can be assured accuracy
2.2 Rotation Speed: If a slower speed is required, i.e. for better
visibility; press the speed control button (h).
Speed will revert to 0rpm, press button again to get required speed.
2.3 Receiver Set-up: Using the bracket included, mount this onto a
staff or grade rod.
Turn the receiver on and raise or lower the receiver on staff until it makes
a continuous beeping sound. This is the point level of with the
instrument.

The receiver has two settings; a course and a fine setting. The band
width and the audio volume can be adjusted using the receiver’s
buttons.
Standard Leveling Set-up
When set up the instrument will create a laser beam across the
entire work site to a radius of 250m and the receiver will give a
signal in all points within the instruments range

3. Grade Slope Operation
The Imex 99DG has a semi-automatic grade slope function to 10% on both
X and Y axis’s.
This allows for the following tasks to be performed; Sloped concrete slabs,
drainage slope, ceiling and grid slopes, fencing slopes.
3.1 Grade Mode
For best results use the remote control. Set up the instrument in the
direction of slope required.
Turn on grade mode using button (a).
Once grade mode is activated ‘X’ will flash on the grade display (e) and
grade slope indication (l) will turn on
By holding down grade setting buttons (f) or (g) you can now enter your
desired slope on the x axis
To set grade on the y axis press button (b) x/y selection button, then the ‘Y’
indicator on the display screen will flash
Again using the grade setting buttons (f) & (g) you can now enter your
desired slope on the y axis
Once you have set you required grade slopes on the x & y axis, press x/y
selection button (b) so both the ‘X’ & ‘Y’ indicator on the display screen
remain on
The laser will continue to spin for 30 seconds and will then bring the x & y
values on the display screen back to 0.00%
The laser will then start to adjust to your set grade slope
Once your set slope is reached, this will be displayed on screen. i.e. X
2.50% Y-5.69%

3. Grade Slope Operation cont:
3.3 Dual Grade Sloping –Used for areas where a fall is made
simultaneously to a point 90º to the other axis.
Ideally site instrument to one corner of the worksite.
Set X axis as shown. At 90º to the X axis set the Y axis in the same
manner. The grade is now set for both runs.
X axis
Direction of slope
Y axis Direction of slope
3.3 Exiting Grade mode
To exit grade mode press and hold button (a) grade display setting (e) will
disappear and unit will re-level itself into level position.

4. Scan Mode Operation
The scan mode function allows the laser beam to emit
only in a restricted radius.
This function is useful for;
-Internal layout work where work is being carried out in single runs or
sections i.e. wall or ceilings
-On restricted sites internal or external where other laser or electrical
equipment may be in use
-On busy sites where eye safety with other workers may be an OH & S issue
-On single long external runs i.e. pipe laying where full 360º is not required
-Especially useful in vertical mode 180º operation
4.1 Operating the Scan
With the unit on, press the scan button (h). Set the width required 0º, 10º,
45º, 90º or 180º by pressing the button once for every scan width
increment.
To change the direction or position of the scan use the scan direction
buttons (f and g). Press either of these buttons until the desired position is
reached.

5. Vertical Function
The vertical function allows the instrument to be laid horizontally
and a vertical line is emitted.
This function is used for;
-Alignment of formwork or pipeline runs in external situations
-Alignment of internal wall, floor and ceiling layout
-In conjunction with the plumb spot beam, which is always
90º to the rotating beam, a set-up reference point can be
determined.
Alignment of internal wall, floor and ceiling layout
5.1 Using the Vertical Mode
Lay the instrument on a floor or board. Make sure the instrument
is approximately level +/- 5º and turn on. Instrument will level as
in standard position.
All functions which can be carried out in standard position can
be performed in the vertical position i.e. scanning, vary speed
etc.
5.2 External use with Receiver
The vertical beam can be picked up with the use of the receiver
in vertical position or 90º to normal position to check formwork
or pipeline alignment set up instrument at the end of the run in a
horizontal plane.

Determine datum point at end of run with the receiver. Instrument is now
set to give a straight laser beam over the full length of the run.
Outdoor vertical function 90º Plumb & Vertical
6. Batteries
The instrument is powered by 4 DC4.8-6V Nimh rechargeable batteries that
allow for approximately 20 hours continuous use in standard conditions
(20º-25º)
& 1 x 4D cell alkaline battery pack (60hours continuous use)
6.1 Battery Situation
The battery case is located on the base of the instrument. If changing
batteries; undo the cover, replace batteries checking polarity.

6.2 Recharging Batteries
A battery level indicator light (k) is situated in the bottom right of
display panel.
When battery is exhausted plug the charger provided into the
recharging point on the instrument, located immediately below
the control panel. The charger plugs into a standard 240V outlet.
Standard full charge time is approximately 7 hours. However the
instrument can be charged and used simultaneously. In some
instances a car charger accessory kit is an advantage.
DO NOT OVER CHARGE BATTERIES!
7. Checking Accuracy
Your Imex instrument has been pre-set and calibrated for
accuracy before dispatch and should perform within the stated
accuracy tolerance in standard conditions. However if the
instrument is knocked, poorly transported or mistreated in any
way the accuracy may be compromised and unit may need re-
calibration.
On commencement of a task it is advisable to carry out a simple
control check.
7.1 Level Checking –Horizontal
Place instrument approximately 30m from a blank wall and with
X1 axis square to the wall project a line onto the wall and mark
line with a fine pencil or similar.
Turn the instrument 180º to X2 and repeat

The value or the difference between the two points should not exceed 3mm
(±1.5mm from centre)
Repeat the process on the Y axis
Rotate 180º x1 Beam
X2 Beam 3mm
max
30m
7.2 Plumb spot Horizontal check
- Place instrument on horizontal axis on tripod or
similar, 10m from a wall
- Mark the spot on the wall
- Turn unit 180º and repeat
The difference between the two points should not
exceed 6.5mm.
6.5mm
max
. 10m
If values exceeded these by 10% contact your local service centre or 1800
669 110 to organise service and calibration.

9. Warranty Service and Care
9.1 Warranty
The Imex rotating laser range is covered with a 12 month warranty and a
separate warranty form is included.
Fill this out and return to the supplier.
International Measuring Equipment
Precision House ●
Merlin Way ●
Quarry Hill Industrial Estate ●
Ilkeston ●
Derbyshire ●
DE7 4RA ●
9.2 Service and Calibration
It is recommended that in general use, laser equipment should be
calibrated by a registered service centre every 12 months. For less
frequent use 24 months is permissible.
9.3 Care of Instrument
For optimum results from your instrument care must be taken to prevent
damage. Laser instruments contain sensitive optical assemblies and need
to be treated carefully.
-Storage –Store in an area away from direct sunlight and under the
storage temperature limit of 70°C
-Transport –Lasers can be affected by vibration and shock; never
transport loose on the back of a vehicle.
-Cleaning –When working in a dusty environment always clean
instrument before packing away.
-If working in wet environment, completely dry unit with dry cloth before
packing away.

10. Technical Specifications
Model
99DG
Horizontal/Vertical
YES
Self-Levelling Range
+/50
Water proof
IP64
Accuracy
1.5mm @ 30m
Power
DC 4.8-6v (Ni-mh
rechargeable) or 4D cell
alkaline pack
Working Distance
Diam 500m with included
detector
Working time between
charge
approx 20 hours
Rotation Speeds
0, 60, 120, 300, 600 rpm
Low Battery Indicator
Yes
Scan Mode
YES 10º,45º,90º,180º
Battery Charger
240V
Automatic Grade Slope
± 10.00% X & Y axis
Working Temperature
-200C - +500C
Plumb Spot
YES -accuracy +/ 1mm @
1.5m
Detector
Imex LR1 Heavy duty
Double sided operation
fine & course setting
Light Source
Red laser diode, 635nm,
Unit Weight
2.7kgs
Remote Control
YES - Working range
approx 20m
Set Inclusions
Laser unit, detector and
bracket Remote,
charger, Hard carry
case, extra alkaline
battery pack

Copyright © International Measuring Equipment 2014
T: [phone] E:[email protected] W: www.imextools.co.uk