Level Developments LD-2M Manuale utente
LD-2M
Operating Instructions
2 Axis Electronic Inclinometer
with RS232 and Digital Display
www.leveldevelopments.com
Level Developments Ltd
Spencer Place
97-99 Gloucester Road
t.
+44 (0)20 86841400
f.
+44 (0)20 86841422
e.
sales@leveldevelopments.com
Croydon
Surrey CR0 2DN
United Kingdom
1
Contents
Contents
.............................................................
Introduction
.......................................................
Features
..............................................................
Measuring Angle
...............................................
Button Functions
...............................................
Battery and Charger
..........................................
Accuracy test
......................................................
Setup Menu
........................................................
Tolerance.................................................
Calibrate..................................................
Average...................................................
Sound......................................................
RS232......................................................
LED Scale.................................................
Backlight.................................................
Brightness................................................
Contrast..................................................
Power (Auto off)......................................
Save........................................................
Specifications
.....................................................
Dimensions
.........................................................
Warranty
............................................................
1
2
2
3
4
5
5
6
6
7
11
11
11
13
13
13
13
14
14
14
15
15
2
Introduction
The LD-2M is a revolutionary measuring tool that provides a digital readout
of angle in the X and Y axis simultaneously. It has a measurement range of
±30° and a resolution of 0.01°. It has an overall accuracy of better than
±0.05° and a built in RS232 interface which can be used to connect to a data
logger or computer. At the time of writing there is no other product
available which can match this performance at the same price.
On/off
switch
RS232/Charge
connector
Features
3
Measuring Angle
The LD-2M can be used to measure angles in three different modes. It will
switch automatically between them depending on how the instrument is
positioned.
X Axis Measurement Mode:
In this mode the instrument is placed
horizontally on the side face and the
displays switches to read the X axis of
tilt only. The measurement range is
±30°.
Y Axis Measurement Mode:
In this mode the instrument is placed vertically on
the side face and the displays switches to read
the Y axis of tilt only. The measurement range is
±30°.
X-Y Axis Measurement
Mode:
In this mode the instrument is
placed on it’s base and the
display reads the X and Y axis
of tilt simultaneously. The
measurement range is ±30°
for each axis.
4
Button Functions
‘
Mode
’ and ‘
Up’
button:
In normal use this button switches the display between reading
the angle reading in degrees (°) and reading the gradient in
mm/m.
In setup mode (see page 6 for details) this is used as the ‘
Up
’
key to navigate the menu settings.
‘
Abs > Rel
’ and ‘
Menu’
button:
In normal use this button switches the display between reading
the absolute angle and reading a relative angle from the angle
at which the key was pressed. The display will show ‘
ABS
’
when reading in absolute mode.
This button is also used to activate the setup menu, and make
selections once in the setup area. To activate the ‘
Menu
’
press and hold this button while the unit is switched on. This
will take you directly into the setup menu facility.
There are three buttons used to control the LD-2M inclinometer. They
each have a dual function, one function whilst in normal operating mode
and one whilst in the setup menu area. The functions are detailed below:
‘
LCD Back-light
’ and ‘
Down’
button:
In normal use this button switches the LCD back-light on or
off.
In setup mode (see page 6 for details) this is used as the
‘
Down
’ key to navigate the menu settings.
5
Battery and Charger
The LD-2M has a built in Lithium Ion rechargeable battery, and is supplied
with an intelligent charger unit. In normal use the battery will last around
100 hours. When the battery indicator reads low, or when the battery is
completely flat, plug in the charger unit and allow to charge for 12 hours.
The charger unit is a universal type which can operate from 110-240v a.c.
At 50/60 Hz. An adaptor may be required depending on the country of
use.
Testing the Accuracy
Please use the following simple procedure to check the accuracy of the LD-
2M before using. This should also be carried out if the unit is dropped, or
is being used in an environment that varies more than 5°C from the envi-
ronment in which it was last calibrated.
1) Place the LD-2M down on
a clean, flat horizontal sur-
face. The surface does not
have to be exactly level.
Wait 10 seconds so the dis-
play is completely stabilised
and note the X and Y angle
readings from the display.
2) Turn the instrument
through 180° (see drawing),
and place back down in the
same spot on the surface.
Wait 10 seconds so the dis-
play is completely stabilised
and note second set of read-
ings of the X and Y angle.
3) Compare the two X-axis readings. One reading should be the negative
of the other. For example if X
1
= +0.35° then X
2
should read -0.35°. If
there is more than 0.05° variation then unit will need to be recalibrated
(see page 7). Check the same for the Y-axis readings.
6
Setup Menu Mode
There are a number of settings which affect the operation of the LD-2M
inclinometer, and these can be accessed from setup menu. To activate the
setup menu, switch off the instrument, press and hold the key and
switch the unit back on with the key still pressed. After the start-up
screen, the display will show the menu options as follows:
Use the keys to highlight the required setting and the key to go
to this setting page.
Tolerance :
The tolerance setting controls the scale of the circle which appears in the
display. It can be set to ‘
On
’ or ‘
Off
’ and the value can be changed be-
tween 0.1 and 10.0°.
7
Calibrate :
The calibrate screen allows you to reset the absolute zero position in the
XY mode, the X mode and the Y mode.
Setting the XY Axis Zero Point -
Place the instrument on a flat stable surface. The surface does not need to
be perfectly level. Wait for a few seconds to allow the display to stabilise.
Use the keys to select ‘
Set-XY
’ and press the key. Wait for a
few seconds until the display reads :
Turn the level through 180° (as shown in the drawing) placing back down
in the same place on the surface as before.
8
Step 1 - Place instrument down select ‘Set XY’ and push button.
Step 2 - Rotate through 180° and push button again.
The XY measurement mode zero point is now re-set
Use the keys to select ‘
Return
’ and press the key to return to
the main menu. Select save to exit the menu and return to the normal
mode of operation.
9
Setting the X Axis Zero Point -
Place the instrument on it’s horizontal side on a flat stable surface as
shown in the picture below. The surface does not need to be perfectly
level, but should be clean and flat. Wait for a few seconds to allow the
display to stabilise. Use the keys to select ‘
Set-X
’ and press the
key. Wait for a few seconds until the display reads :
Turn the level through 180° (as shown in the drawing) placing back down
in the same place on the surface as before.
The X measurement mode zero point is now re-set
Use the keys to select ‘
Return
’ and press the key to return to
the main menu. Select save to exit the menu and return to the normal
mode of operation.
Indice
Altri manuali Level Developments Strumento di misura
