Electronic Levels

The electronic level is a high-precision instrument for testing the inclination and the slope relative to the horizontal or any given angle. The reading is expressed in seconds of the arc by way of a numeric display allowing a rapid readout. The instrument works on a pendulum principle. A pendulum always hangs vertically thus allowing measurement of the variance relative to the horizontal base. For all levels, the mechanic is putted in a oil-bath metallic box with high shock protection.

The electronic level is currently employed in the following applications:

  • Error detection of linearity, planarity and parallelism;
  • Mounting and levelling of machinery;
  • Testing of inclination, slant and flexion in civil engineering.

The available models are :

  • LE101 - Electronic Level with
    analogue readout unit

  • LE201 - Electronic level with
    integrated digital display

  • LE301 - Electronic level with integrated
    digital display, inner storage memory
    and infrared remote control.

  • LE051 - Electronic level with squared cust
    iron base and both digital and analogue readout units.
  • LE401 - Electronic level withexternal
    digital and graphic readout unit
    radio transmission.
LE101 - Electronic level

The electronic level is composed of the LE 101 sensing unit and the VA 110 readout unit.

Data is transmitted from the sensor to the display by cable. Using this configuration the user can read the inclination values on the display even if the sensor is in an awkward position.

A switch allows to select one of the 3 measuring scales. It is possible to connect two LE 101 sensing units to the VA 110 display unit for readings to be collected from different sources. This is particularly useful where floors are not perfectly stable.

Rechargeable battery-powered, has a warming indicator of insufficient charge. It comes supplied in ABS box with user's guide.

LE201 - Electronic level

The new "LE 201" electronic level, replaces the old model, while improving its performance and ease of use. It is a high precision instrument for very small angle measurement, with the following specifications:

  • MICROPROCESSOR-BASED LOGIC
  • LINEARITY AND FLATNESS MEASURES
  • FACTORY-SELECTABLE MEASURE UNIT: µm/m, sec, mrad
  • ONLY THREE KEYS KEYBOARD: UP, DOWN E ON/OFF
  • OPTIONAL WINDOWS SOFTWARE
    FOR DATA PROCESSING
  • DIFFERENTIAL MODE CAPABILITY (with "LE 301" level)

This 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 sensitive LVDT- Linear Variable Differential Transformer), to the analogue-to-digital converter, to the system calculations and data display.

Measures are continuously taken and processed, to average out electronic noise and high-frequency mechanical vibrations. Sensitivity is as high as 0.5 µm/m (0.1 second of arc).
The internal software manages the whole acquisition process, the measures averaging and the data display on a 16-characters LCD. By means of two keys on the front panel, the measuring reference can be moved up and down, to set the zero and simplify the process. The level may be complemented by a Windows Software +application, especially designed for an easy and straightforward data processing, archiving and printing, as well as graphic rendering of the surface or line under test. This makes it possible to produce a complete and accurate information
of the measured surfaces. Supplied in ABS box with user's guide.


LE301 - Electronic level

The new LE 301 electronic level completes our range of precision instruments for linearity and flatness measurements.
Here its main characteristics are listed:

  • MEASURING SYSTEM OPERATING THROUGH MENUS;
  • LINEARITY AND FLATNESS MEASUREMENTS;
  • SELECTABLE UNIT OF MEASURE: µm/m, sec, µrad;
  • STORAGE OF INPUT DATA FOR DEFERRED TRANSMISSION TO PC;
  • RS-232 INTERFACE;
  • PC-RESIDENT SOFTWARE UNDER WINDOWS;
  • DIFFERENTIAL MODE MEASUREMENTS (WITH TWO LEVELS).

This electronic system is based on a high performance microprocessor that drives the A-D converter of a very sensitive LVDT (Linear Variable Differential Transformer). Sensitivity as high as 0.5 micron/meter (0.1 seconds of arc). The instrument's internal software guides the operator with a easy menu-based interface, implemented on a 16-character alphanumeric display and a 6-key simplified keyboard, through which commands are entered. A remote control is a valid aid for simple commands and functions. The serial RS 232 link allows data stored in the instrument to be transferred to a PC for either on-line or off-line processing. In the PC, a program running under Windows treats data to yield a complete representation of the measured object, offering also the possibility to produce hardcopies of both numeric and graphic outputs. Supplied in ABS box with user's guide.
LIVELLA ELETTRONICA LE051
The electronic level is composed by a stabilized cast iron structure with two right-angled sides, useful for testing the perpendicularity; both digital and analogue displays; a wooden handle (in order to prevent influences on the structure with the manual contact); the internal mechanic of the pendulum is in an oil-bath box which protects against accidental shocks.
A commutator permits the selection of one of the five possible resolutions (from 250 µm/m up to 1 µm/m), while a potentiometer permits the regulation of the "zero".

Rechargeable battery-powered, with battery status.

LIVELLA ELETTRONICA LE401

The evolution of the electronic level has been concentrated in this new instrument, LE401 where inclination values are transmitted through a radio connection . The instrument is composed by: a digital readout unit (VD410), and a pendulum unit (LE401). The pendulum unit, as for the other models of electronic level provided by Microplan Group, uses the oil-bath system for shock damping, while the digital read-out unit is used for the transmission/reception of data from the sensible unit, without any cable. In the same unit, the ON/OFF button, the PC and battery charger connection and a command keyboard are located. The two units can communicate with a maximum distance of 100 m: the VD410 unit can read the signals from 1 up to 10 pendulum units at the same time.

The digital and graphic display gives you the exact value of inclination, along with the inclination direction; a complete range of values can be stocked by the VD410 unit and can be then transmitted to the PC through an apposite connection cable and WPLAN ©MICROPLAN Software: the data elaboration follows 4 different methods:

•  Straightness
•  Easy-grid flatness
•  Complete-grid flatness
•  Parallelism

The operator can also select or change the following parameters:

•  Measure Unit (µm/m; arc seconds; microrad) •  Zero Setting (Absolute or easy)
•  Time-out

Resolution is 0,5 µm/m. Rechargeable batteries with status indication. The complete instrument is provided in ABS valise with accessories, battery charger, user's guide and WPLAN©Microplan Software on CD-R.

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