21L – Professional Handheld Thermal Imaging Camera for Industrial and Maintenance Applications
Introduction
The B21L is a high-performance handheld thermal imaging camera designed for engineers, maintenance specialists, and technical inspectors who require precise temperature analysis and reliable thermal data. With advanced thermal sensitivity and a robust ergonomic design, the B21L is ideal for electrical diagnostics, mechanical maintenance, HVAC inspections, and predictive industrial analysis.
Main Description
The B21L features a 256 × 192 infrared detector (49,152 pixels) and a NETD < 40 mK for exceptional image clarity and sensitivity, ensuring accurate detection of even subtle temperature differences. With a temperature measurement range of -20°C to 550°C and accuracy up to ±2°C or ±2%, it delivers dependable results in both field and laboratory conditions.
A 3.2-inch LCD display (240 × 320 resolution) provides sharp, real-time thermal visualization at 25 Hz, while multiple color palettes—including White Hot, Black Hot, Rainbow, and Ironbow—allow users to adapt the thermal view to specific inspection environments.
The focus-free lens ensures quick operation and minimal adjustment time, while center, hot, and cold spot measurement tools enable precise diagnostics. Built-in 16 GB flash storage can hold up to 90,000 radiometric images, ensuring that data collection remains seamless.
Connectivity is enhanced with Wi-Fi (2.4 GHz) and USB Type-C, allowing for easy data sharing and remote access. Powered by a rechargeable Li-ion battery, the B21L operates continuously for up to 6 hours and recharges fully in just 3 hours. Its rugged IP54 protection and 2-meter drop resistance make it a durable choice for industrial and outdoor environments. Additionally, the Class II laser pointer aids in precise targeting of measurement areas.
Technical Highlights
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IR Resolution: 256 × 192 (49,152 pixels)
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Thermal Sensitivity (NETD): <40 mK @ 25°C, F1.0
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Temperature Range: -20°C to 550°C (-4°F to 1022°F)
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Accuracy: ±2°C / ±2%
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Spectral Range: 7.5–14 μm | Detector Pitch: 12 μm
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Focal Length: 3.6 mm | F-number: F1.0
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Field of View (FOV): 37.2° × 50.0° | Min. Focus Distance: 0.3 m
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Image Frequency: 25 Hz
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Display: 3.2” LCD, 240 × 320 resolution
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Color Palettes: White Hot, Black Hot, Rainbow, Ironbow
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Imaging Mode: Thermal
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Measurement Tools: Center, Hot, Cold Spot | Up to 3 user-defined spots
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Storage: 16 GB built-in flash memory (~90,000 images)
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Connectivity: USB Type-C, Wi-Fi (802.11 b/g/n, 2.4 GHz)
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Battery Life: Approx. 6 hours | Charging Time: 3 hours
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Protection Rating: IP54 | Drop Test: 2 m
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Laser Pointer: Class II
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Weight: 380 g | Dimensions: 221.7 × 73.5 × 123.8 mm
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Tripod Mounting: UNC ¼”-20
Reliable Performance for Technical Professionals
Built for precision and endurance, the B21L offers a perfect balance of advanced imaging, ease of use, and rugged design. From preventive maintenance to industrial diagnostics, it provides accurate, real-time thermal insight that professionals can rely on—delivering consistent performance in the most demanding environments.