Mastercool 52224-D — IR 8 Laser Thermometer 12:1 -60°+760°C

8-Laser Targeting with Adjustable Emissivity for Professional Diagnostics

The Mastercool 52224-D is a professional-grade infrared thermometer featuring an innovative 8-laser targeting system and adjustable emissivity. This advanced combination delivers exceptional accuracy across different materials and surfaces, making it the ideal choice for demanding HVAC diagnostics and industrial applications.

8-Laser Precision Targeting

The eight-laser targeting system creates a clear visual boundary showing exactly what you're measuring. Unlike single-point lasers that only indicate the centre, the 8-laser pattern defines the entire measurement area with precision, eliminating guesswork when measuring specific components, pipes, or surface areas.

Adjustable Emissivity for Accurate Readings

Different materials emit infrared energy differently. The 52224-D features adjustable emissivity from 0.1 to 1.0 (in 0.01 increments), allowing you to calibrate the thermometer for the specific material you're measuring — whether it's shiny metal, painted surfaces, plastics, or insulation. This ensures accurate readings regardless of surface type.

Advanced Measurement Modes

• MAX Mode — Captures the highest temperature in a scan
• MIN Mode — Records the lowest temperature detected
• DIF Mode — Calculates temperature difference between readings
• AVG Mode — Provides average temperature across multiple measurements
• Emissivity Adjustment (E) — Fine-tune for different materials (0.1 to 1.0, step 0.01)

Professional-Grade Performance

• Wide Temperature Range — -60°C to 760°C (-76°F to 1400°F) covers virtually all HVAC and industrial applications
• Superior Accuracy — ±1.0°C (1.8°F) at ambient conditions; ±2% or 2°C at operating range
• 12:1 Distance-to-Spot Ratio — Measure safely from a distance
• High Resolution — 0.1°C/0.1°F precision for detailed diagnostics
• Backlit Colour LCD — Easy to read in any lighting condition

Why Adjustable Emissivity Matters

Standard infrared thermometers with fixed emissivity (typically 0.95) work well for most non-reflective surfaces but can give inaccurate readings on shiny metals, polished surfaces, or materials with different emissivity values. The 52224-D's adjustable emissivity ensures you get accurate readings on:

• Copper pipes and fittings (emissivity ~0.05-0.15 when polished)
• Aluminium components (emissivity ~0.05-0.30)
• Painted surfaces (emissivity ~0.90-0.95)
• Plastics and insulation (emissivity ~0.85-0.95)
• Oxidised or weathered metals (emissivity varies)

Built for Field Use

• Non-Contact Measurement — Safely monitor hot, hazardous, or hard-to-reach materials without contamination or surface damage
• Instant Readings — Simply point, pull the trigger, and read the temperature
• Protective Carrying Case — Moulded plastic case protects the unit during transport
• Long Battery Life — Minimum 7 hours continuous use with laser and backlight
• Ready to Use — Includes 2 AAA batteries and instruction manual

Technical Specifications

• Temperature Range: -60°C to 760°C (-76°F to 1400°F)
• Operating Range: 0°C to 50°C (32°F to 122°F)
• Distance-to-Spot Ratio: 12:1
• Target Indicator: Eight-laser pattern
• Display: Backlit colour LCD
• Emissivity: 0.95 default, adjustable 0.1 to 1.0 (step 0.01)
• Resolution: 0.1°C/0.1°F (-76°F to 999.9°F), otherwise 1°C/1°F
• Measurement Modes: E (emissivity), MAX, MIN, DIF, AVG
• Accuracy (ambient 15-35°C): ±1.0°C (1.8°F)
• Accuracy (0-760°C): ±2% of reading or 2°C (4°F), whichever is greater
• Accuracy (-60 to 0°C): ±(2°C + 0.05/degree)
• Battery Life: Minimum 7 hours continuous use (with laser and backlight)
• Power: 2 x AAA batteries (included)
• Included: Instruction manual, moulded plastic carrying case

Perfect For

• Professional HVAC diagnostics requiring material-specific accuracy
• Industrial maintenance on mixed-material equipment
• Refrigeration system troubleshooting
• Electrical panel and motor temperature monitoring
• Preventative maintenance programmes
• Any application requiring precise, non-contact temperature measurement across different materials

The Professional's Choice

When accuracy matters and you're working with different materials, the 52224-D's adjustable emissivity and 8-laser targeting system deliver the precision you need. This is the thermometer for professionals who demand accurate readings regardless of surface type or material.

Backed by Mastercool's reputation for quality. Technical documentation available for download above.