Laboratory Density Profile Analyzer "DENSE-LAB Mark 3"

for MDF, Particle Boards and OSB

Data sheet: Laboratory Density Profile Analyzer | PDF (115 KB)

An ideal density profile is essential in the production of quality wood based panels. Furthermore, it avoids unnecessary expense of over-dimensioning.

Through the use of the DENSE-LAB, the vertical density characteristics of a board sample can be measured – i.e., from one surface to the other surface. The samples measure of 50 x 50mm. The x-ray beam is sent through a slit diaphragm, thus generating a narrow line. A step motor in lowest steps (line by line) for scanning can then move the sample. This procedure thus forms the desired density profile.

A key point to understand about the technology of Density Profile Systems for laboratories: They are equal.
Nearly all of today’s Laboratory Analyzers use the same technology, which is x-ray technology. Explanation: The measuring principle employed is the same. As the evaluation of the measurement data is carried out by software, it is possible to develop and display all the various charts, reports, graphs and files which are needed.
The question then becomes: What are the special features which make the EWS DENSE-LAB different from the other equipment on the market?
Answe: Price, Dimensions, Weight, x-ray energy and life time of the x-ray tube.
Further features are ease of maintenance and ease of use.
A point to consider is that the DENSE-LAB is the unit of choice for numerous institutes, universities and R&D labs, and usage by many students and scientists from these institutions over many years has proven to be very positive.

The importance of the density profile can be appreciated by the end-user of the finished panel for achieving the needed strength values and to minimize the use of wood and glue and to reduce energy input.

The desired density profile is especially important in MDF production, since the profile is developed (and influenced) by the press diagram.

Normally, the highest density which is needed in the surface layer is realized by the very-high initial pressure in the hot press. Then, when the pressure is released, the heat penetrates the core layer over a longer time period, thus lowering the density of this region under pressure.

The size of the surface layer and the definition of the sanding level are vital process parameters. These values allow the calculation of a forecast of the average density of a finished sanding board.

If the density in the core is too high, the panel would become too heavy. Abrupt density drops in the core must be avoided.

Average values can be evaluated. Various sample profiles can be compared by overlay functions. Details can be analyzed by zoom functions. History files allow analysis at a later date.

Last but not least the laboratory density profile system is the only tool for calibrating an online density profile gauge (StenOgraph).

Aanalysis

Average density
Maximum, minimum values
Location of sanding level
Detail analysis by zoom function
Comparison of profiles by overlay function
Long-term history files

Technical Data

Technology:	x-ray
Anode current:	0.02 mA
High voltage:	50 kV (adjustable)
Measuring range:	up to 1.500 kg/m³ (optional higher)
Resolution:	10 - 100µm
Step time:	0.1 - 2.0 s adjustable: excelleration measurement of core
Sample holder:	max. 10 (up to 200 mm total thickness)

Remote Control

Technical assistance is available by “EWS-Online Support”.

Accessories

Weight scale with interface for direct data transfer
Moisture meter (microwave)
Digital caliper with interface for direct data transfer

Advantages

Optimization of production
Quality assurance and avoiding of claims
Evaluation of best sanding level
Helpful tool for research and development of new products

Software

Clearly arranged visualization by PiperWare Software (see separate leaflet).

Sample Holder (10 samples)

Sample No.
Reference No.
Reference profile
Measured density profile
Data interpretion table

Microwave Moisture Meter