GemRed DIGITAL LEVEL User manual

DIGITAL LEVEL
KNOW YOUR LEVEL
1）Endcaps-Ends cushioned to help protect level from damage.
2）Bubble Vial-The level or plumb of a surface can also be accurately
measured by positioning the bubble inside the vial in between the
marks on the vial’s surface.
3）Keyboard
4）LCD Display-With blue backlight. Large, easy-to-read display screen
reads right side up even when level is upside down.
5）Measuring surface-only bottom surface is the measuring surface
6）Battery compartment-Holds two AAA batteries to power the LCD
display (included)
IMPORTANT NOTE ：
1）The digital level has been pre-calibrated at the factory.
2）The level should only be recalibrated if level has been dropped.
(see Calibrating your Level)
1）Place the digital level on a flat and smooth surface, press A button and
B button at the same time, the calibration mode is activated and
"-1-" will be displayed. Press A button again,-1- will flash briefly. Do
not move until -2- is displayed.
Fig. 2
2) pRotate the level 180 in the same location and ress A button,
-2- will flash briefly. Do not move until the unit has completed the
calibration and reset the display to the current level.
Fig. 3
1
2
3415
6
KEY FUNCTIONS
Fig. 1
2）Button B
-
press once to enter the HOLD function and for the H
1）Button A - Press once to turn the LCD display screen on. Press the
button again to set current angle to zero, p yREF icon will be dis la ed to
gindicate relative an le measurement mode. HOLD button A for 3
seconds to turn off. An auto-off feature shuts the display off after a period
of inactivity to preserve battery life.
icon be displayed, press once again to release hold function.
Press and Hold button for 3 seconds to activate sound
pe ( )function. Bee r will sound at level 0and plumb( 90 ).
ep pThe sound function utilizes a series of be s that increase in tem o
approaches 0 and 90 degrees and
as iteventually reaching a constant tone at exactly 0 and 90 degrees
Replace batteries when the Battery Power Icon is displayed.
Only displayed when battery power is low.
Sound/Beeper Icon-This icon appears on the screen when the
beeper function is activated.
Indicates that the level is working in relative angle mode.
This icon appears on the screen when the HOLD function is activated.
Indicates that the digital level is calibrating for one direction.
-1-
-2- Indicates that the digital level is calibrating for another direction.
LCD SCREEN ICONS
3）Button C- converts angles to different units. Push once to change the
( )in/ft . Hold button for 3 seconds to turn on light. Touch any key to then
illuminate the display while light function is on. Hold button again for 3
seconds to turn off light.
p p ( ) pto ercent slo e % , to itchdisplay units from degrees ( ) to mm/m,
°
CALIBRATING YOUR LEVEL(Figs.2,3)

, y yOnce the Power button is turned on la the level on the surface ou
p ywant to level. In standard ABS mode the LCD dis la will show the
surface you are measuring as a line either above or below the true
level line, and the degree to which the surface is off, with symbol +/-
showing how to adjust the surface to be leveled
If the beeper is activated, the beeper will sound at 0 and 90 .
HOLD/SOUND
ON/REF/OFF
mm/m % In/ft
LIGHT
15°
Fig. 4
HOLD/SOUND
ON/REF/OFF
mm/m % In/ft
LIGHT
15°
HORIZONTAL(Fig.4)
The digital level can be used to measure the pitch of a roof. It measures
the pitch in inches of rise per foot or millimeters of rise per meter of run.
Push button C for the appropriate mode.
Fig.5
PITCH(Fig.5)
Fig. 6
g p pThe di ital level measures the slo e of a surface in ercent. This is
useful when laying pipe for proper drainage. When the conversion
button is in the slope mode, it will display (% ). If the sound mode
has been activated, the level will beep at 0.0%.
Power supply 2 x 1.5V AAA batteries
Angle measuring range 4 x 90
Resolution 0.05
Accuracy of digital display 0&90 ：0.1 ，others 0.2
Accuracy of vial +/- 0.029°
Working temperature -10 C to 50 C
Storage& shipping temperature -20 C to 70 C
Auto shut off After 5 minutes of inactivity.
SLOPE(Fig.6)
SPECIFICATION