VPFR
VPFR
Viewing Pane Fixed Reinforced

Save Time, Save Money, Stay Safe:
Industrial-grade VPFR series infrared windows from IRISS will enable thermographers to survey critical electrical applications more efficiently and more safely than ever before.
NFPA standards recommend infrared inspection under fully energized conditions; but PPE requirements and panel cover removal and reinstallation are time-consuming and therefore costly. Use of the VPFR nearly eliminates the risks associated with infrared electrical inspection by providing companies with a non-invasive, closed-panel inspection methodology. Thermographers inspecting through the window are never exposed to energized conductors and circuit parts, and not engaged in risk-increasing behaviors (as outlined in the 130.7(C)(9) of NFPA 70E, and in CSA Z462). Therefore, the elevated levels of PPE prescribed by 70E for invasive surveys are not required when utilizing the VPFR, thereby minimizing survey time while maximizing safety.
Protected by an Unconditional Lifetime Warranty.
VPFR Features:
- Industry’s ONLY impact resistant IR window: Patented reinforced optic exceeds high-voltage switchgear viewing pane standards.
- Fixed and Stable IR transmission rates: Industrial-grade materials guaranteed against transmission loss for accurate qualitative and quantitative analysis.
- Born out of necessity: Created by Level III Thermographer as solution to hazards and shortcomings of traditional techniques / materials.
- Manufactured from non-conductive UL94 plastics insulated to 30kV/mm.
Certifications:
The IRISS Industrial-Grade VPFR series was specifically designed to exceed the industrial and building maintenance communities’ demands for impact resistant IR windows with a stable transmission rate.
The reinforcing hexagon pattern is constructed of an Aluminum Core with 2 coats of insulating, switchgear-grade nylon – the same material used in most contactors found on industrial switchgear.
The patented design, construction and materials used make the IRISS industrial-grade viewing panes the ONLY impact resistant IR windows on the market today.
Compare the durability of the patented VPFR Industrial-Grade Viewing Pane…
…To that of a typical Calcium Fluoride optic.
The IRISS Industrial-Grade VPFR series was specifically designed to exceed the demands of the industrial and building maintenance communities’ demands forimpact resistant IR windows with stable transmission rate. The VPFR windows from IRISS utilize materials that are unaffected by humidity, moisture, vibration, high frequency noise and a broad spectrum of acids and alkalis.
Because of the materials we use, IRISS is the ONLY infrared window manufacturer that is able to offer a true, Unconditional Lifetime Warranty.
Specifications
Materials
|
Window housing and cover |
UL 94 5VA Nylon (“switchgear-grade plastic”); -40°C (-40°F) to 273°C (523°F) |
|
Optic |
UL 746C certified, 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) |
|
Gaskets |
UL 94 5VA TPE; -40°C (-40°F) to 273°C (523°F) |
|
Hardware |
316 stainless steel |
|
|
|
|
Other |
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|
Useful temperature rating |
-40°C (-40°F) to 200°C (392°F) |
|
Water and dust ingress |
IP65 / NEMA 4: closed and when in use |
Dimensions
| Model |
Body Diameter |
Viewing Pane Diameter |
Assembly Thickness |
|
VPFR-50 |
9.1 cm (3.6 in) |
5 cm (2 in) |
2.0cm (0.8 in) |
|
VPFR-75 |
12.1 cm (4.8 in) |
7.5 cm (3 in) |
2.0cm (0.8 in) |
|
VPFR-100 |
14.9 cm (5.9 in) |
10 cm (4 in) |
2.0 cm (0.8 in) |
Installation Dimensions
VP-50:
VP-75:
VP-100:
Industrial-Grade Performance
The IRISS VPFR infrared windows are the most robust infrared window solution available; and they offer the most comprehensive warranty in the industry: an Unconditional Lifetime Warranty.
The VPFR passes all relevant impact tests due to their patented design and industrial-grade materials, and they maintain stable transmission rates in typical industrial environments.
Our clients are using the VPFR extensively in:
- Substations (indoor and outdoor)
- MCC’s
- Motor termination Boxes
- Mining applications
- Oil Platforms
- Refineries
- Paper Mills
- Utilities
- Pharmaceuticals
- Computer Data Centers
- Steel Mills
- Aluminum Plants
- Etc…..


| Model |
Body Diameter |
Viewing Pane Diameter |
Price |
|
VPFR-50 |
Industrial-grade infrared window |
5 cm (2 in) |
|
|
VPFR-75 |
Industrial-grade infrared window |
7.5 cm (3 in) |
|
|
VPFR-100 |
Industrial-grade infrared window |
10 cm (4 in) |
Quote prices are subject to change without notice; quantity breaks start at 25 units.