top of page
Diam Length logo with background Feb20.p

Accurate and fast diameter, length and curl measurement


Accurate and fast diameter length and measurement    


​DiamLength is an automated fibre diameter, length, and curl measurement instrument.  Measuring fibre diameter as small as 1 um and fibre length as long as 20 mm, it can measure up to 40,000 fibres in less than a minute.  It is ideal for measuring glass fibre, carbon fibre, basalt fibre, aramid fiber, PP fibre, polyimide fibre, PET fibre and more.  This powerful instrument saves time and money while preventing measurement errors and improving quality control.  The system reports and records its measurements for easy data logging and report writing. 


Diamlength Technology

Diameter and length measurement are typically measured using optical microscopes, optical comparators and rulers, and inevitably involve errors due to individual differences among operators and measurement conditions. The process is usually slow and tedious and only a low number of fibres are measured.

The DiamLength uses digital camera technology and image processing.  Various dimensions are rapidly and accurately measured from the captured images.  The images are illuminated using a strobed high-powered led light source.  The fibres traverse across a set of imaging plates that also forms as the flute to suck up the fibres from the beaker.  The fibres cast a shadow on the camera surface, sophisticated edge detection and classification algorithms detect all the fibres in the image.  A custom sub-pixel algorithm is used to determine the edge of the fibre beyond the size of the pixel. 

Analysis 6mm chopped PP fiber.png
Identifying long fibers.jpg

Identifying long fibers

Accurate fiber following and

Accurate fiber following and analysis

Analysis of 6mm chopped PP fiber

Quick and simple process
Once the fibres are dropped into the glass beaker with water, the instrument will do the rest: disperse, measure and dispense the fibres. 

  • Simplicity with less chance of human error.

  • Reliable with minimal maintenance.

Key benefits of Diamlength 
Diameter: fibre diameter significantly affects the flexural properties of fibre reinforced composites and the uniformity of the glass weave for printed circuit boards.

Length: fibre length is a main parameter that determine the properties and processability of fibre composites. Fibre lengths affect strength, modulus, impact resistance and wear resistance, however the effect of long fibres increases the difficulty of processing.


Key benefits

  • Understand fibre properties to a level that has not been possible before. For example: are the shorter or longer fibres dominating the performance of your product? If so, input costs could be reduced by having rapid feedback in fibre manufacture.

  • Greater control of fibre quality and avoidance of costly mistakes at the manufacturing stage.

  • Reliable monitoring and timely detection of defects for scheduling repairs and maintenance.

  • Easy to use with little to no operator bias.

  • Accurate and repeatable results.

  • Records images and generates trending information for fibre mean and distribution.

bottom of page