The environmentally reinforced CAP ENV-PDS is a revolutionary inspection window. It combines the power of Thermal imaging, Visual, UV, Ultrasound and Partial Discharge inspections. Industrial applications require solutions that meet numerous criteria where safety and performance are of the upmost importance. The exclusive pharmaceutical-grade reinforced polymer system allows any thermography camera to monitor completely undisturbed assets inside energized electrical equipment in the visual, UV and shortwave, midwave and longwave IR spectrums.

The Toughest and Most Reliable Infrared Window in The World

  • Versatile & Durable

    The CAP-ENV-PDS is sized at 4″, 8″, 12”, or 24″.

  • Fixed and Stable Transmission (FAST)

    Durable, fully impact-resistant, pharmaceutical-grade optics with Hexagonal grill allowing for Ultrasound inspections to be conducted..

  • Poly-View System Technology

    The exclusive industrial-grade, reinforced Poly-View System™ polymer allows any theromographic camera to monitor completely undisturbed assets inside electrical equipment.

  • Unparalleled Field of View

    The larger rectangular viewing area provides an unparalleled field of view (FOV) when compared to traditional round IR windows.

  • Protected by our Unconditional Lifetime Warranty

    Unconditional lifetime warranty applies not only to the workmanship of the window housing but also applies to the durability and stability of the optic in the proposed environment.

  • Proudly Made in the United States

    IRISS manufactures and assembles all products at our global headquarters located in Bradenton, FL.


Window Housing and CoverStandard product constructed of aluminum; custom materials available
Ultrasonic Receiver HousingAluminum
OpticUL 746 compliant, visual, UV and IR transmissive polymer; -40°C (-40°F) to 325°C (617°F)
GasketsUL 94 5VA TPE; -40°C (-40°F) to 273°C (523°F)
Hardware316 stainless steel
Useful Temperature Rating-40°C (-40°F) to 200°C (392°F)
Water and Dust IngressIP67 / NEMA 6
WarrantyUnconditional Lifetime Warranty
Ultrasonic Receiver
Center Frequency40.0± 1.0KHz
Bandwidth (-6dB)2.5KHz
Receiving Sensitivity (at 40.0 KHz 0dB= 1 volt/ µbar)-61 dB min
Capacitance at 1KHz ±20%2400 pF
Max. Driving Voltage (cont.)20 Vrms
Total Beam Angle -6dB50° typical
ModelWindow DimensionsOverall Dimensions
CAP-ENV-PDS-4L= 9.68 cm (3.81 in), H= 9.77 cm (3.85 in)L= 15.24 cm (6 in), H= 15.24 cm (6 in)
CAP-ENV-PDS-6L= 9.1 cm (3.6 in), H= 15 cm (5.9 in)L= 16 cm (6.3 in), H= 21.8 cm (8.6 in)
CAP-ENV-PDS-12L= 23.6 cm (9.3 in), H= 12.7 cm (5.0 in)L= 30.5 cm (12.0 in), H= 20.6 cm (8.1 in)
CAP-ENV-PDS-24L= 53 cm (20.9 in), H= 15 cm (5.9 in)L= 61 cm (24.0 in), H= 21.8 cm (8.6 in)

Don't see what you're looking for?

We specialize in custom solutions.
Click here to get started.

Request More Information

Request A Demo

Follow IRISS