Microplan LE051 User manual
LE051
ELECTRONIC LEVEL
USER’S MANUAL
your partner for metrology
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©2016 Microplan®
Documento: LE051_IT
Versione: 16/04
All rights reserved.
Microplan®2016
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The electronic level is a high-precision
instrument for testing the inclination and
slope relative to a horizontal line or any
given angle.
The readings are expressed by means of
a digital or an analog numeric display in
µm/m (micron for meter), in seconds of
arc, or in µrad (microradians), accor-
ding to choice, and the error values are
displayed very quickly.
The instrument works on a pendulum
principle. A pendulum always hangs ver-
tically, thus allowing measurement of the
displacement relative to the horizontal
base, by means of an inductive position
transducer.
The innovation that applies to all MICRO-
PLAN levels is that the mechanical parts
are contained in a sealed oil-bath, which
provides very good protection against
shocks, for instance during transport or
handling.
Electronic levels are currently used in the
following applications:
> Recording errors of straightness, flat-
ness and parallelism.
> Mounting and levelling of machinery.
> Testing for inclination, twist and flexion
in civil engineering.
rate read-out unit, etc.
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La gamma completa di Livelle
elettroniche Microplan®
Unità di lettura digitale, analogica o
analogico/digitale
Sistema innovativo di meccanica a
bagno d’olio per la protezione
dagli urti accidentali
Alta risoluzione
Batterie ricaricabili
Uscita seriale per comunicazione
dati a pc
RoHS Compliant
The complete range of Microplan®
electronic levels
Digital, analog or analog/digital
readout unit
Innovative system with oil bath
mechanism for accidental
shock protection
High resolution
Rechargeable batteries
Serial port for data transmission
to PC
RoHS compliant
La gamme complète des niveaux
électroniques Microplan®
Unité de lecture numérique,
analogique ou analogique / numérique
Système innovant de mécanique dans
bain d’huile pour la protection
contre les chocs accidentels
Haute résolution
Piles rechargeables
Sortie série pour la communication
données sur PC
Conforme RoHS
Die komplette Auswahl von
Microplan® elektronischen
Wasserwaagen
Digitale, analoge oder analoge/digitale
Anzeigeeinheit
Innovatives System mit Ölbadmechanik
zum Schutz vor versehentlichen Stössen
Hohe Auösung
Wiederauadbare Batterien
Serielle Schnittstelle zur
Datenübertragung an PC
RoHS entsprechend
ELECTRONIC LEVELS
complete range
LE211
LE602
LE050
LE051 LE801
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CAUTIONS
BEFORE USE
The electronic levels are supplied in ABS
anti-shock boxes.
Inside each box you can find a complete
set of components, needed for the proper
operation of the level (see the component
list for each model).
Herewith are a few suggestions for the
maintenance and proper use of your in-
strument:
Before measuring, clean thoroughly the
surface to be checked and the base of the
level with specific detergents (Paste for
granite, Art. TZ0510 – Liquid detergent,
Art. DT0520). Never use wax, grease or
water-based detergents for cleaning gra-
nite.
Never use the instrument close to magne-
tic fields, as the measurements could be
altered.
The surface plate to be checked should
be levelled as closely as possible to avoid
inaccuracies of the readings due to com-
pound errors.
Check the levelling of the plate or the sur-
face to be measured by using a spirit level
following the instructions supplied with
the Microplan plates (Test report).
Before starting the measurement, check
the battery charge, pushing the button
‘Batt’ (VA110), or just checking that the
display does not show ‘Low Bat’ (VD110
and LE051).
Check the instrument periodically, to
verify its calibration and performance. A
periodical check of the instrument can
ensure better performance and lower
maintenance costs over time.
Lato Etichetta
Label Side
L
0.22 L0.22 L
0.22W0.22W
0.5 W
0.5 W
WVista Inferiore
Bottom view
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OPERATING PRINCIPLES
OF LE051 MODEL
The electronic system is based on a high
performance microprocessor.
The microprocessor is in charge of every
operation within the instrument, going
from the position transducer (a very sen-
sitive LVTD – Linear Variable Differen-
tial Transformer), to the analogue digital
converter, to the system calculation and
data display. Measures are continuously
averaged and processed, in order to re-
duce to minimum the electronic noise and
high –frequency mechanical vibrations.
Sensitivity is as high as 1 µm/m
(0.2 second of arc).
The internal software manages the whole
acquisition process , the measures avera-
ging and the data display on a 16 charac-
ters LCD and a galvanometer for analogic
readout. The digital display shows the
angle value in the higher scale (1 µm/m)
while the 2 selectors in the bottom allow
you to choose between five measure sca-
les and adjust zero.
The level may be complemented by a Win-
dows application WPLAN©MICROPLAN
signed for an easy and straightforward
data processing, archiving and printing,
as well as graphic rendering of the sur-
face or line under test. This makes it pos-
sible to produce a complete and accurate
information of the measured surfaces.
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Components and Accessories
LE051
Art. LE0433 | LE051 Unit
Battery charger included with unit LE0433
Art. LE0435 – Serial connection cable between level and
PC (optional)
Art. LE0439 - WPLAN©Microplan Flatness Software
(opzional)
Handbook (included)
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ZERO SETTING
The following instructions allow you to set
the zero on the instrument:
1) Switch the level on and select the lower
scale (A). Then with the potentiometer on
the right, look for the zero (the value is
shown on the digital display also). Then
verify the zero on the higher scale (E).
2) Turn the level of 180°, read the value
on the display and adjust the potentiome-
ter untill when you reach the half of the
read value. (Example: if you read 26 µm
in the position (a), adjust the potentiome-
ter to 13 µm on position (b)).
3) Repeat the same steps (1+2) by turning
the level of 90°, as shown hereunder.
The instrument is now ready for use.
a b c d
In the pictures the 4 step for zero setting
Measure scale
selector
Potenziometer
(zero adjustment)
MEASURE SCALES
The instrument allows you to work with
five different measure scales, as follows:
Scale A = 1 div 250 µm/m
Scale B = 1 div 50 µm/m
Scale C = 1 div 10 µm/m
Scale D = 1 div 5 µm/m
Scale E = 1 div 1 µm/m
div = division
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BATTERIES CHARGE
The level is supplied along with the
battery charger. We advise customer
against using other battery chargers,
which could damage the inner batteries
of the level.
The battery charger state is shown on the
digital display when the level is switched
on, with the writing “BAT. OK” or “Bat.
MID” / “Bat. LOW” which indicate that
batteries are empty.
PC CONNECTION
Inside the level box you will find the
optional serial connecting cable (RS-
232).
The cable connects the LE051 unit
to the pc through the serial gate
(COM1 o COM2) and needs the use of
WPLAN©MICROPLAN®Flatnesssoftwa-
re (release 4.I)
Regarding the complete procedure for
the memorized data capture on display
we cross-refer to the User’s Guide of the
software WPLAN©Microplan®.
Table of contents
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