| Models | IR-TA | IR-TAP | 
        
            | Measuring System | Wide band radiation thermometer | Narrow band radiation thermometer | 
        
            | Measuring Temperature Range | -40 to 500°C | -40 to 500°C | 
        
            | Detecting Element | Thermopile | Thermopile | 
        
            | Measuring Wavelength | 8 to 14μm | 
        
            | Measuring Diameter | φ45/500mm | φ30/1000mm | 
        
            | Rated Accuracy | ±1% of measured value or ±2°C, whichever is greater. However, ±3°C for 0°C or less to -30°C, and ±5°C for -30°C or less.
 | ±1% of measured value or ±2°C, whichever is greater. However, ±3°C for -30 to 0°C, and ±5°C for -30°C or lower.
 | 
        
            | Repeatability | Within ±1°C ±1digit | 
        
            | Response Time | 0.8sec. (90% response) | 
        
            | Collimation | Center point is indicated by laser beam | Center point is indicated by laser beam | 
        
            | Display | LCD 3-digit display | 
        
            | Emissivity Correction | 0.30 to 1.90 (0.01 step) | 0.30 to 1.90 (Initial value 0.95) | 
        
            | Alarm | Upper limit alarm (beeper) | An upper/lower limit alarm for each group | 
        
            | Working Temperature Range | 0 to 50°C | 
        
            | Power Supply | Alkaline battery, type R-6 (AA) or equivalent, 2pcs | 
        
            | Batter Life | Approx. 50 hours for continuous use | Approx. 30 hours for continuous use | 
        
            | Weight | Approx. 180g | Approx. 220g |