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KJ KJ550+ Infrared Pyrometer (Non-Contact Thermometer)
The professional KJ550+ infrared pyrometer is a powerful, high-precision instrument engineered for instant and safe non-contact surface temperature measurements across an expanded range from -50°C to 550°C. Featuring a higher thermal limit, a 12:1 distance-to-spot ratio, and adjustable emissivity (0.1 to 1.0), this pyrometer is an ideal heavy-duty tool for monitoring industrial thermal processes, HVAC diagnostics, automotive workshops, building energy audits, and complex culinary applications.
Design Features & Benefits:
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Expanded Measurement Range (Up to 550°C): Enables safe monitoring of extremely hot objects, engine components, industrial machinery, brake rotors, and heating boilers from a distance.
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Adjustable Emissivity (0.1 to 1.0): Allows you to calibrate the tool depending on the surface structure of the tested material (reflective metal, matte plastic, masonry, wood), minimizing reading errors.
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Laser Targeting & 500ms Response: An integrated laser pointer highlights the exact measuring target spot, while the advanced sensor processes and displays high-contrast data onto the screen in just 500ms.
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Advanced Monitoring Toolkit: Supports tracking of maximum and minimum historical records (MAX/MIN test), temporary display freeze (Data hold), and customizable high/low temperature limit acoustic alarm settings.
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Ergonomic & Robust: Built inside a vibrant black-and-yellow housing, it weighs a mere 133 grams, features a backlit LCD for low-light conditions, and an Auto Power-off mechanism to maximize battery performance.
Technical Specifications:
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Model: KJ550+
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Temperature Range: -50°C to 550°C (-55°F to 1022°F)
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Accuracy: ±2% or 2°C
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Distance-to-Spot Ratio (D:S): 12:1
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Emissivity: 0.1 to 1.0 (adjustable)
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Response Time & Spectral Range: 500ms, (8-14) um
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Power Supply: 1.5V AAA batteries — 2 pcs.
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Display Size (LCD): 24 mm × 24 mm
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Body Color: Black + Yellow
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Dimensions: 152 mm × 89 mm × 34 mm
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Weight: 133 g (including batteries)
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Packaging Type: Branded color box
| Function / Parameter | KJ550+ |
| Range | -50°C ~ 550°C / -55°F ~ 1022°F |
| Accuracy | ±2% or 2°C |
| Measured distance ratio | 12 : 1 |
| Emissivity (adjustable) | 0.1 to 1.0 |
| Response time and response duration | 500ms (8-14) um |
| Repeatability | ±1% or 1°C |
| Resolution | 0.1°C or 0.1°F |
| Data hold | √ |
| Auto Power off | √ |
| Backlight | √ |
| Low battery indicator | √ |
| High and low temperature alarm setting Function | √ |
| MAX/MIN test | √ |
| °C / °F Conversion | √ |
| Laser target display selection | √ |