Spray characterizing

Tailor-made sprays for specific applications

There are many good reasons why our products are successful. One thing is very important: We know what we are doing before we do it. Lechler has a multitude of possibilities to comprehensively describe sprays tailored to the specific application.

Lechler Messtechnik Spraycharakterisierung

In order to select and optimize the spray characteristics that are exactly right for your application, a reliable statement regarding the following parameters is of essential importance. The data collected in our laboratories are the basis for every development the Lechler performs.

Parameter for the determination of the optimal spray characteristic

Lechler Spraycharakteristik - Tropfen


To register sizes of droplets and velocity spectra, we use a Phase Doppler Anemometer (PDA) and also an imaging method based on the Shadowsizing Principle.

Using these state-of-the-art optical methods, the speeds and diameters of the spray-forming droplets are measured simultaneously and without coming into contact with them. The data obtained with this method form the basis for the nozzle technology design of systems and are a valuable basis for nozzle development.

Further information:

Lechler Spraycharakteristik - Strahlkraft

Spray force

The measurement of the distribution of the jet force on the impact surface, the so-called Impacts, provides information of elementary importance.

Of particularly importance is the knowledge of the impact for the design of descaling nozzles and systems or for the optimisation of nozzles for all kinds of cleaning operations.

Further information:

Lechler Spraycharakteristik - Flüssigkeitsverteilung

Liquid distribution

By assessing the local volume distribution, it is possible to make an optimal arrangement of several nozzles together. The even distribution of the sprayed liquid is of particular importance in many spraying operations. We have developed special procedures that provide fast and reproducible test results using electronic image processing.

The results are documented and available to our customers for planning and construction work. This ensures in advance that Lechler nozzles precisely meet the required performance requirements in this regard in practice.

Further information:

Lechler Spraycharakteristik - Strahlwinkel, Druck und Volumenstrom

Spray angle, pressure and volume flow

Volume flow and spray angle are determined from the pressure and the viscosity of the medium to be sprayed. The measurement of pressure and volume flow takes place with utmost precision with measuring instruments of the highest accuracy classes.

The spray angle is determined optically immediately after the nozzle exit. As the spray distance increases, the details of the spray width or the spray diameter are more suitable depending on the spray distance. Depending on the pressure, friction losses, among other things, influence the spray path and thus the size of the applied surface.

Further information

Lechler Entwicklungs- und Technologiezentrum

Laboratory and facilities

Lechler benefits from having a high-tech laboratory and measuring equipment in-house.

Our Development and Technology Centre offers everything that nozzle developers dream of with an area of more than 600 m².

Laboratory and facilities


Head of Laboratory, Spray Lab and Measuring Technology, Lechler GmbH, Metzingen (Germany)
Konrad GusenbauerHead of Laboratory, Spray Lab and Measuring Technology | Lechler GmbH, Metzingen (Germany)Phone +49 7123 962-179konrad.gusenbauer(at)lechler.de