Kowolux X-4 and X-4eco High Intensity LED Viewers

Kowolux X-4 and X-4eco High Intensity LED Viewers

Kowolux X-4 and X-4eco High Intensity LED Viewers


Durable, economically designed housing made of stainless steel, contain the latest series of Power LED's, giving magnificent white light over the whole control range. The higher contrast helps inspection operators to find defects and discontinuities easily and High luminance makes it possible to view very dark films without destroying them. A cooling fan reduces irritating noise and a large variety of accessories make handling films very easy.

Due to the higher efficiency of LED's, heat generation and power consumption is reduced by 80% compared to other conventional viewers with halogen lamps. With a life span of 40,000 hours, at full load operation, the LEDs wont need to be changed during the life of the viewer, making it a cost effective choice.


  • Stainless steel housing in ergonomic design
  • Viewing screen is made of crystal glass with 95% translucency and an anti-reflective coating, which is thermally cured
  • Plug-in foot switch – plug screw-secured – operable without foot switch (with optional operation plug)
  • 2 Potentiometers for brightness control - 0.2... 100%
  • Cooling fan with temperature dependent speed control – low noise level
  • Changeable filter in the cooling air in-let
  • Interchangeable masks for different film sizes
  • Mounting threads in side panels – for mounting loading device for roll films or a densitometer holder
  • Mounting threads in bottom panel – for safe fixing of the viewer on a desk in mobile laboratories

Kowolux X-4 & X-4eco Viewer Models:

X-4 X-4eco
Luminance, Cd/m2*: 300,000 Cd/m2 160,000 Cd/m2
Maximum density per EN25580 and ASTM E 1390**: 4.5 D 4.2 D
Power Supply: 88...264 V / 47...63 Hz 88...264 V / 47...63 Hz
Viewing Screen - mm: 225 x 80 mm 225 x 80 mm
Viewing Screen - inches: 8.9" x 3.2" 8.9" x 3.2"
Rated Power: 200 W 125 W
Dimensions - mm: 305 x 220 x 205 mm 305 x 220 x 205 mm
Dimension - inches: 12.2" x 9.6" x 8.6" 12.2" x 9.6" x 8.6"
Weight - Kg: 6.9 kg 6.8 kg
Weight - lbs.: 15.2 lbs. 15 lbs.
Color Temperature: 5,000 K - white 5,000 K - white
Lamp Life: 40,000 hours 40,000 hours

Scope of Supply:

Kowolux X-4 and X-4eco Film Viewers complete with:

  • Standard mask
  • Power cord
  • Foot switch
  • Test certificate according to ASTM E 1390, ISO 5580 & DIN EN 25580
  • Certificate of Conformance according to ISO/IEC 17050-1


Optional Accessories

Roll Film Adapter


Product Literature

Description Part # Saved Price Select Option Add to
Kowolux X-4 kit with mask, foot switch, power supply, instructions and certification (13 40100) RT-KT-X4 $3,825.00 $3,195.00
X4eco Viewer with foot switch and 10x48 cm mask (13 40101) RT-KT-X4ECO $3,295.00 $2,785.00