Lenox Instrument Company FireSight Boiler and Furnace Camera Systems
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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

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

High-Temperature Furnace Camera Systems

Real-Time, High Resolution, Color Video Monitoring and Recording

Portable Diagnostic Camera System with Illumination

Why Use Lenox Furnace Camera Systems?

  • Designed to be rugged and durable for use in hostile, high-temperature environments.
  • Proven reliable dual cooling system and the highest camera resolution with superior optics.
  • Minimal maintenance and operating cost once correctly installed.
  • Backed by an industry leading two year warranty.
  • Flexibility in the choice of penetration lengths and viewing angle options.
  • Lenox know how, expertise and installation/field service.

Lenox high-temperature, video camera systems are designed to be mounted either directly through the
wall or flush with the exterior wall of a furnace or other combustion chamber. The Lenox Furnace
Camera HD with stainless steel camera housing mounts in a 3.5 inch (89 mm) opening and employs a
steel triple wall laminar flow for efficient water-cooling of the camera and the latest optical lens
technology to provide clear, real time images, enabling operation in hostile environments up to 4250ºF
(2345ºC). The Lenox Hot Area Camera with an aluminum water-cooled camera housing enables
operation in environments up to 500ºF (260ºC) with fixed lens or 300ºF (149ºC) with window and are
ideal for hot area steel process monitoring.

Lenox high-temperature, furnace camera systems are widely used to monitor combustion and flame
pattern for possible burner malfunction; process flow for proper material position, alignment and
movement; melter material mix, formation patterns, melting point; assess refractory condition; and
other hot area processes found in steel, glass, cement, and paper manufacturing.

(Contact Lenox for information on other industrial high-temperature CCTV camera systems for remote viewing)


Furnace Camera HD (6935SC)   Hot Area Camera (6900AC)
1/3” CCD Color Camera Camera Type 1/3” CCD Color Camera
Water-cooled 304 Stainless Steel with through air purge and RTD for monitoring internal enclosure temperature Construction Water-cooled aluminum enclosure
with window purge or through air purge
4250°F (2345°C)
(Fixed or 5X Zoom Lens)
Max Temperature 300°F (149°C) with Window-Variable Zoom (standard), 500°F (260°C) with Fixed Lens (special)
Straight Direction of View Straight
Fixed or 5X Zoom Field Coverage (see below) Fixed or Variable Zoom
24” (61 cm), 31” (79 cm), 36” (92 cm) Length 17” (432 mm)
3.5” (88.9 mm) Diameter 5.5” (139.7 mm)
Good quality, sediment – free water Cooling Requirements Good quality, sediment – free water

Furnace Camera HD Systems are supplied with a NEMA 4 (IP66) junction/interface box that houses the following:

  1. 12 volt camera power supply and line power interface
  2. Interface & temperature readout for camera housing RTD (available 4 - 20 mA, 0 - 20 mA or 0 - 10 V transmitter outputs )
  3. Digital (RS232) camera interface for remote adjustment of gain control, shutter speed and color
  4. RS170 analog video - standard
  5. Optional Outputs - Ethernet 10/100 Base-T or Fiber Optic - 1 multimode fiber 62.5/125μm

Optional System Accessories:

  1. Automatic Retract System - Pulls Furnace Camera HD back on loss of cooling preventing over-temperature damage.
  2. Monitoring Station - Provides a local point of connection and status monitoring of coolant flow, purge air pressure, and electrical connections.

Model Number Information: (Example: 6935SC-2406/F0)

(Model)   (Length) (Filters) (Lens)   (Mounting) (Special)

Model: 6935SC = Stainless Enclosure, 6900AC = Aluminum Enclosure
Lengths: See Specification Chart Above
Filters: (For all “SC” types and for “AC” with “PH” special
“0” = None , “1”, “2”, “3”, “4” are Neutral Density, “W” is shade 5 green
Lenses: Select Lens Number from Coverage Chart Below
Mounting: “F0” is standard cradle mount for AC and SC types
SC options only are: “F1” = 8”-150# flange, “F2” = Flat plate flange
Specials: “EX” for Export (PAL type, 220V, SC and AC type.)
“PH” = Fixed High Resolution Lens modification for AC type.



Camera Type Lens Number Coverage (Approx)
6935SC and 6900AC
with "PH" Special
62°V x 78°H x 95°D
45°V x 60°H x 72°D
34°V x 44°H x 55°D
45°V x 60°H x 72°D to 9°V x 12°H x 15°D
6900AC only U 62°V x 78°H x 95°D to 26°V x 34°H x 43°D



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