Infrared inspection window

thermographic

Standard viewing ports and windows
For ovens up to 700°C several standard viewing port and window options are available. For non-gas-tight ovens cable ports with 6, 36 or 48 mm diameter may be fitted in the side wall and windows can be fitted in the oven door where applicable. For most standard chamber furnaces up to 1800°C viewing ports fitted on the back wall or furnace roof are available on request.

Quartz glass windows up to 1100°C
Quartz glass windows can be supplied for tube furnaces and other applicable furnace types up to 1100°C on request, offering optical access in high-temperature zones.

Thermocouple and viewing ports
Viewing ports may be fitted to furnace doors for most chamber furnaces up to 1800°C, with or without quartz windows depending on size. Thermocouples can be installed through the rear wall of many chamber furnaces; calibration ports are also available to support process validation.

Sliding thermocouples up to 1500°C
The sliding thermocouple is a standard option for pyrometer-controlled vacuum chamber furnaces. It is positioned in the hot zone to provide accurate measurement and control up to 1500°C and automatically retracts above 1500°C so the pyrometer assumes temperature measurement.

Pyrometers up to 3000°C
Pyrometers are fitted as standard for vacuum chamber furnaces above 2200°C for temperature control. For other furnace types, pyrometers can be fitted on request to extend non-contact measurement capability up to 3000°C.

Examples

• Custom split tensile test furnace with quartz viewing window up to 1100°C
• Standard PN 30 oven up to 300°C with optional exhaust fan, viewing window and interior light
• Viewing port centered in the vertical lift door of a 1700°C HTF 17/25 furnace
• CAF G5 furnace for ash fusibility testing to 1600°C fitted with a digital camera for automated imaging
• Sliding thermocouple for accurate control below 1500°C when a pyrometer provides high-temperature measurement
• Pyrometer used for temperature control up to 3000°C in vacuum chamber furnaces

Technical specifications / Characteristics

• Standard viewing ports/windows available for ovens up to 700°C
• Cable ports for non-gas-tight ovens: diameters 6 mm, 36 mm or 48 mm (side wall)
• Windows can be fitted in oven doors where applicable
• Viewing ports for standard chamber furnaces available on back wall or roof on request; suitable for furnaces up to 1800°C
• Quartz glass windows available for tube furnaces up to 1100°C
• Thermocouples may be fitted through rear wall of chamber furnaces; calibration ports available
• Sliding thermocouple option for pyrometer-controlled vacuum chamber furnaces: accurate control up to 1500°C; retracts above 1500°C for pyrometer control
• Pyrometers used for vacuum chamber furnaces above 2200°C; pyrometers available on request for other furnaces (measurement capability up to 3000°C)
• Example specialised furnaces: PN 30 ovens up to 300°C (optional exhaust fan and interior light), HTF 17/25 (1700°C), CAF G5 (ash fusibility testing to 1600°C) with imaging options
• All options generally available on request and may depend on furnace type, size and gas-tightness