FLIR A6481 Cooled Automation Camera (Select Lens and Calibration)

The FLIR A6481 Cooled Automation Camera is a high-performance midwave infrared (MWIR) camera designed for industrial process control, quality assurance and non-destructive testing. Its 640 × 512 infrared resolution, typical thermal sensitivity of 25 mK and programmable frame rates up to 125 Hz provide detailed thermal imaging for accurate temperature measurement, including on fast-moving production lines. With a 3.0–5.0 µm spectral range, the A6481 combines long-life cooled detector technology with motorised optics and advanced calibration options for a wide range of thermal inspection tasks.

Designed for Continuous Industrial Monitoring

Built around FLIR's high-sensitivity HOT MWIR detector technology and a long-life linear cooler, the A6481 is designed for reliable 24/7 operation in demanding industrial environments. Its cooler has a rated lifetime of 27,000 hours, helping reduce maintenance requirements during long-term operation. Programmable frame rates, adjustable integration times and flexible subwindow modes allow the camera to be configured for different inspection speeds and target areas.

Motorised Focus and Filter Flexibility

Unlike the A6451, the FLIR A6481 supports both manual-focus and motorised-focus MWIR lenses, allowing the camera to be configured for a variety of monitoring and inspection applications. Motorised focus lenses can be adjusted remotely using compatible FLIR software, helping simplify setup and refocusing in automated or hard-to-access installations.

The camera also features a three-position motorised filter wheel, providing additional flexibility for specialised measurement tasks. Depending on the selected filter configuration, the A6481 can support higher-temperature measurements as well as specialist applications such as imaging through flames or glass.

Straightforward System Integration

The FLIR A6481 supports GigE Vision, GenICam and RS-232 communication standards for straightforward integration into industrial automation, machine vision and data acquisition systems. Radiometric infrared video streaming over Gigabit Ethernet provides high-quality thermal data for monitoring, analysis and automated process control.

Selectable Lenses

Select the lens best suited to your field of view and inspection requirements.

• 13 mm manual-focus lens (4255676) – Wide-angle option for capturing larger inspection areas
• 17 mm manual-focus lens (4215423) – Suitable for wider-field thermal imaging
• 25 mm manual-focus lens (4215425) – Versatile general-purpose inspection lens
• 50 mm manual-focus lens (4215500) – Narrower field of view for smaller or more distant targets
• 17 mm motorised-focus lens (4216408) – Remote focus adjustment with a wider field of view
• 25 mm motorised-focus lens (4216410) – General-purpose motorised inspection lens
• 50 mm motorised-focus lens (4216412) – Remote focus lens for longer-distance imaging

Optional 1× and 3× close-up lenses or microscopes are also available for detailed inspection of smaller targets. All listed lenses operate within the 3.0–5.0 µm MWIR spectral range. Confirm lens compatibility and mounting requirements before ordering.

Selectable Thermographic Calibration

The FLIR A6481 is available with a range of thermographic calibration options to suit different temperature measurement requirements.

Calibration option & approximate temperature range

• MWIR Thermographic Calibration (CAL35-STD)
• ND0 Thermographic Calibration (CAL35-ND0)
• ND1 Thermographic Calibration (CAL35-ND1)

The appropriate calibration and filter configuration will depend on your required measurement range and application. Radiometric temperature measurement accuracy is dependent on the selected calibration range and operating conditions.

Please note: Select the appropriate lens, calibration and filter configuration for your application. If you are unsure which combination best suits your requirements, contact our team for assistance before ordering.

Key Features

• 640 × 512 infrared resolution for detailed thermal imaging
• FLIR MWIR detector with a 3.0–5.0 µm spectral range
• Typical thermal sensitivity of 25 mK for detecting small temperature differences
• Programmable frame rates from 0.0015 Hz to 125 Hz for monitoring fast-moving processes
• Long-life FLIR FL-100 linear cooler rated for 27,000 hours of operation
• Manual-focus lens options: 13 mm, 17 mm, 25 mm and 50 mm
• Motorised-focus lens options: 17 mm, 25 mm and 50 mm, with remote focusing through compatible FLIR software
• Three-position motorised filter wheel for specialised thermal imaging applications
• Optional 1× and 3× close-up lenses or microscopes for detailed inspections
• GigE Vision, GenICam and RS-232 interfaces for industrial system integration
• SDI video output supporting 720p and 1080p modes
• Standard temperature measurement range of -20°C to 350°C, with optional higher-temperature ranges up to 3,000°C, depending on configuration
• Measurement accuracy of ±2°C up to 100°C and ±2% of the reading above 100°C
• Multiple mounting points, including 1/4-inch, 3/8"-16 and 10-24 tapped holes
• Selectable MWIR, ND0 and ND1 thermographic calibration options