Extruline is a laser system designed to control the external diameter of extruded products such as electrical wires, plastic tubes and similar products.
In addition to the diameter measurement and tolerance checking, Extruline can provide the automatic extrusion process regulation to detect and locate diameter flaws all along the product’s length.
With non contact technology it is possible to measure moving, hot or soft products, where conventional instruments cannot be used and may even damage the product.


  • Dual or single axis gauging allows high performance feed back
  • Two instruments in one: diameter controller and flaw detector
  • Extruding at the lower limits of tolerance means significant savings in materials
  • The automatic control capability saves labour costs
  • Non-contact measurement for the on-line application and 100% control
  • Improvement in product quality and reduction of waste
  • Flaw-free products with assessed quality

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Dual Axis
Extruline XY13/A XY13/B XY13/A/HF XY13/B/HF XY35/A XY35/B/HF
Gauge Model XLS13XY/480/A XLS13XY/480/B XLS13XY/1500/A XLS13XY/1500/B XLS35XY/480/A XLS35XY/1500/B
Measuring field (mm) 13 x 13 4 x 4 13 x 13 4 x 4 35 x 35
Measurable Diameters (mm) 0.1 - 10 0.03 - 3 0.1 - 10 0.05 - 3 0.2 - 32
Resolution (selectable) 10/1/0.1/0.01
Linearity (centred) (µm) ±0.5 ±1
Linearity (reduced field) (µm) ±1 ±0.5 ±1 ±0.5 ±1.5
Repeatability (T=1s, ±2σ) (µm) ±0.15 ±0.03 ±0.04 ±0.02 ±0.3 ±0.15
Beam Spot Size (mm) 0.1 x 4 0.03 x 0.1 0.1 x 4 0.05 x 0.1 0.2 x 4 0.2 x 0.1
Scanning Frequency (Hz) 480(X) x 480(Y) 1500(X) x 1500(Y) 480(X) x 480(Y) 1500(X) x 1500(Y)
Single Axis
Extruline X40/A X80/A X150/A
Gauge Model XLS/40/1500/A XLS80/1500/A XLS150/1500/A
Measuring field (mm) 40 80 150
Measurable Diameters (mm) 0.1-38 0.75-78 0.8-149
Resolution (selectable) 10/1/0.1/0.01
Linearity (centred) (µm) ±0.5 ±1 ±3
Linearity (reduced field) (µm) ±0.5 ±2 ±4
Repeatability (T=1s, ±2σ) (µm) ±0.07 ±0.2 ±0.4
Beam Spot Size (mm) 0.08 x 2 0.4 x 3.5 0.5 x 4
Scanning Frequency (Hz) 1500

The basic package includes the following functions:

  • Display of the measured diameter and of the shift from the nominal diameter
  • Computes the (X+Y)/2 Avg. Diameter and (X-Y) Ovality
  • 3 measured values can be simultaneously displayed on the screen
  • Programmable alarms and pre-alarms for out-of-tolerance conditions
  • Measurement of opaque or transparent products (Glass Logic)
  • Library for 1000 different products, retrievable directly by the operator
  • Possibility of entering a password to restrict the programming functions to authorised personnel
  • Ethernet / Rs232 interface for remote programming or data retrieval
  • Multi-lingual menus (Italian, English, French and German)
  • Selectable measuring unit (mm or inches) and resolution
  • Pre-programmed factory setup to facilitate installation and start-up of the system

The additional Process Regulation module (Option 1) features the following functions:

  • Software for automatic regulation of the diameter by adjusting the drawing speed or the flow rate of the extruder
  • The regulation parameter is the average diameter, which is independent from the cross-section orientation, even when highly ovalised products are being gauged
  • PI (Proportional Integral) mode using INC (+) or DEC (-) signals
  • The process regulation is started only when a real trend to deviate from the nominal pre-set value is detected
  • Automatic compensation of dead time, according to variations of the line speed
  • All control parameters can be programmed and stored in the product library
  • Programmable hot/cold offset to compensate for the thermal expansion of the extruded product when the measurement is performed immediately after the extrusion head

Statistical Reports

The additional Statistics module (Option 2) offers the following functions:

  • Histograms showing the measured diameters: (X+Y)/2 or X&Y values
  • Programmable diameter limits to filter out and ignore abnormal measurements arising from anomalous working conditions
  • The data acquisition interval can be selected manually by the operator or automatically determined via a Start/Stop input
  • Recording of maximum, minimum and average values
  • Calculation of standard deviation of Cp and Cpk values
  • Total length and average speed reporting
  • All listings show the date and time
  • Identification of the operator, the machine and the type of product
  • Progressive numbering of the reel

The additional Flaw Detecting and Location module (*) (Option 3) offers the following functions:

  • Single scan diameter checking capability
  • Separate tolerance limits for the flaw detection function, added to the pre-set nominal value or to the average diameter previously measured (self adapting mode)
  • Independent outputs for + and - flaws
  • Recording of the max or min value of the flaw and its position along the spool
  • Print out of a Flaw Location Report
  • The report can include flaws detected by other external devices (i.e. Spark Testers, Capacitance Testers, etc.)
  • Plastic and rubber extrusion
  • Electrical wires and cables
  • Tubes and piping
  • Cable and wire
  • Additional software for the extruder regulation
  • Additional software for statistical analysis
  • Additional software for flaw detection and location
  • Electronic potentiometer for the extruder interfacing
  • Proximity switch for length counting
  • Blow rings to dry the product
  • Telescopic stand for the laser gauge
  • Extension cables
  • Calumet exhaust fan to remove the extrusion smoke
  • Gauge Calibration Report
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