SCALP-04

Portable Scattered Light Polariscope

SCALP-04 is a compact scattered light polariscope for depthwise stress measurement in architectural glass panels with thickness more than 5mm. SCALP-04 contains diode laser, optics, camera and immersion liquid container. Recording of the data and stress calculation is done by PC, connected over USB. Handling of the polariscope is simple – clean the glass, apply a drop of immersion liquid, place SCALP onto the same spot and press the measure button in software. After 3 seconds the stress profile is shown on the screen of PC.

Specifications

  • Dimensions (L*W*H): 77*38*79 mm

  • Weight: 315 g

  • Communication interface: USB 2.0

  • Power supply: USB bus

  • Power consumption: 2.5 W

  • Laser wavelength: 635 nm

  • Laser output power: <5 mW

  • Sensor resolution: 1280*1024 pixels

  • Immersion container: 35 ml

  • Immersion liquid: min. refraction index n=1.36 (ethanol)

  • Software requirements: Windows 11

  • Measurable glass: Flat and curved glass (r > 300 mm)

  • Measurable surface: Air and tin side

  • Minimum measurable thickness: 5 mm

  • Maximum measurable depth: 19 mm

  • Measurement time: 1-6 seconds, default 3 seconds

  • Minimum surface stress: 4.0 MPa

  • Maximum stress: Not limited

  • Precision: <2 MPa if surface stress < 20 MPa, <5% otherwise

  • Operating conditions: +10 … +50 °C

  • Humidity: 0 – 90 % R.H. (non-condensing)

  • Ambient light: 50 lux or less recommended

  • Calibration: Calibrated by manufacturer

  • Warranty: 2 years

  • Limitations: some coatings (low-E, reflective, etc.), covered or painted surfaces, surfaces with texture