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Lenox Instruments Borescopes
Lenox Instruments Borescopes
By Type

Air Cooled Firesight

Water Cooled Firesight

Pultz High Temperature Cameras

By Industry

Furnace Camera for
Steel Mills

Boiler Camera for
Power Generation

Boiler Camera for
Paper Mills

Furnace Camera and Tin Bath Cam for Glass

Cement Kiln Camera

Incinerator Camera

Fired Heater Camera for Petrochemical & Refining

View Our Brochures & Literature

Lenox Instrument Company has been serving our client for over 90 years
Lenox FireSight Products

Firesight Brochure

FireSight High - Temperature Remote Viewing Systems
for color video monitoring of combustion and process control in
boilers, furnaces, kilns and incinerators

Only by seeing directly into the inside of your boiler, furnace or incinerator, are you able to:

  • Instantly view burner malfunction, flame impingement, fire ball centering problems, tube leaks and other problems
  • Reduce shut downs and maintenance costs by identifying NOx, CO and O2 imbalance, high unburned
    carbon (LOI), eyebrows, slag, clinker and ash build-up
  • Optimize the efficiency and safety of your unit by viewing fuel and adjusting fuel and air flow in the burning zone
  • Save time, man-hours and fuel during start-up
  • Watch for proper process flow and accurate conveyance of materials

Specially designed for high-temperature environments - and backed by over eighty years of experience - Lenox FireSight systems view the inside of your furnace or boiler and displays what it sees in real time on a color monitor 24 hours a day 365 days a year. A proven record of reliable performance that is unmatched by any other system available today and backed by a two-year warranty!

The Lenox air-cooled boiler camera for applications up to 3000°F (1649ºC) requires a boiler wall penetration of only 2-3/8 in. (61mm). With its small size, the system will normally fit between boiler tubes and can often be used with existing wall penetrations. FireSight systems provide the highest image clarity in the industry. The Light Volume Control feature, a Lenox exclusive, consists of a remote-controlled motorized iris and spot filter located in the furnace lens. With the Light Volume Control, an operator can easily adjust the amount of light transmitted to the camera, eliminating the flaring / blooming common with other systems and ensuring a high-quality image from initial light off to maximum load. The system features quartz optics, another Lenox exclusive, that withstands temperatures up to 1200ºF (649ºC) higher than the glass lens used in other systems. The compressed air- cooling system provides reliable performance while using considerably less air than competing systems. The Wall Box mounting assembly provides a protective housing for the system and serves as the primary coolant shroud. (For portable systems see Portable FireSight Diagnostic System brochure).

Optional system accessories include an Automatic Retract System that automatically pulls the Lenox furnace camera back should a loss of cooling occur, preventing possible over - temperature damage to the furnace lens assembly; a high efficiency compressed Air Filter System for removing oil, water and particulates providing clean air to the FireSight system insuring trouble- free performance and a clear view of the combustion. It uses a self–purging coalescing filter and a pressure differential switch, which may be wired to an alarm, letting the operator know when its time to change the filter elements. Flat CRT or Flat LCD monitors and a Digital Video Recorder are also available.

Lenox FireSight Brochure
Lenox Boiler Camera / Furnace Camera Components:

Wall Box


Furnace Lens


High-Temperature, Air Cooled Camera Housing

4 Light Volume Control

5 Compact, High-Resolution CCD Camera

6 Video Monitor

7 High Effciency Compressed Air Filter System with mounting plate

FireSight Systems Include:
*Specfications subject to change without notice.

  • Air-cooled FireSight Furnace Lens Assembly (specify 24” or 36” – direct or right angle viewing)
  • Air-cooled CCTV Housing Assembly
  • High-resolution CCD Color Camera Assembly
  • Light Volume Control Motor Assembly – consists of a remote-controlled motorized iris and
    spot filter located in furnace lens assembly – an exclusive to Lenox
Stock Number Furnace Lens Length Viewing Direction FOV
mm (inches)
610 24"
Direct 90°
610 24"
Right Angle 55°
914 36"
Direct 90°
914 36"
Right Angle 55°
Lengths up to 96 inches (243 cm) available - consult factory



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