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IRISS VPT-100 Infrared Window

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4 inch Transparent Polymer. The latest in infrared window technology!

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Product Description


An evolutionary step in infrared (IR) windows, thePlatinum Series VPT utilizes our exclusivePoly-View™ technology toallow the use of anythermography camera to monitor electrical equipment.

The world’s only clear polymer window provides forvisual inspections, traditional IR inspections utilizingcameras across the entire IR spectrum, and allows forUV inspections to be performed with a corona camera.
The Platinum Series VPT IR windows are industrial-grade with a patented reinforced grill that exceeds highvoltage switchgear viewing pane standards.


  • The world’s only clear polymer industrial-grade IR window series
  • Poly-View™ technology enables viewing in the visual, UV, and shortwave, midwave, and longwave IR spectrums
  • Fixed And Stable Transmission (FAST)
  • Clear pharmaceutical-grade optics
  • Unconditionally guaranteed against transmission loss for accurate qualitative and quantitative analysis
  • Durable, fully impact-resistant
  • Available in 2”, 3”, and 4” sizes (actual viewing area)
  • Easy-Grip™ stainless steel cover
  • Fitting templates and instructions included



Window Housing and Cover

UL 94 5VA Nylon (switchgear-grade plastic);-40°C (-40°F) to 273°C (523°F); Easy-GripTM stainless steel cover


UL 746 compliant, visual and IR transmissive polymer;-40°C (-40°F) to 325°C (617°F)

Reinforcing Grill

Aluminum coated with UL 94 5VA Nylon; -40°C (-40°F)to 273°C (523°F)


UL 94 5VA TPE; -40°C (-40°F) to 273°C (523°F)


316 stainless steel


Useful Temperature Rating

-40°C (-40°F) to 200°C (392°F)

Water and Dust Ingress

IP65 / NEMA 4: closed and when in use

 VPT Comparison Table


Body Diameter

Window Diameter

Assembly Thickness


9.1 cm (3.6 in)

5.1 cm (2.0 in)

2.6 cm (1.0 in)


12.1 cm (4.8 in)

7.6 cm (3.0 in)

2.6 cm (1.0 in)


15.1 cm (5.95 in)

10.2 cm (4.0 in)

2.6 cm (1.0 in)

Additional Information

Additional Information

Application Mechanical, Industrial, Longwave, Shortwave
Features Hinged Cover, IR & Visual Panels, IR Panel Only
Size 4"


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