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Product Selection Guide: Contact thermometers

Use our product selection guide to find the thermometer that fits your needs best.
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Fluke 51 II Single Input Digital Thermometer 1
Fluke 568 Infrared and Contact Thermometer
Fluke 51 II Handheld Digital Probe Thermometer568 Contact & Infrared Temperature Gun
Recommended usesLaboratory, quality assurance, process calibration, food safety, HVACElectrical, mechanical, plant, diesel, HVAC 
Probe typeThermocouple K, J, T, EThermocouple K 
Number of inputs11 
Temperature rangeT-type: -250 °C to +400 °C (-418 °F to +752 °F)-270 °C to +1372 °C (-454 °F to +2501 °F) 
What temperature range do you need to measure?500 °C (+932 °F)500 °C (+932 °F) 
Will you be working from greater than 5 m (15 ft)?  
Will you be measuring objects 200 °C (400 °F), moving, uncontaminatable, energized objects or difficult to reach objects?  
Do you need to download data for analysis and reporting?  
Do you need on-board memory for trending and comparison?  
Will you do any hands-free, real-time temperature monitoring with a PC?  
Non-contact temperature range500 °C (+932 °F)500 °C (+932 °F) 
SightingLaser point 
Typical distance to targetUp to 7.5 m (25 ft) 
Form factorFlatPistol 
Dimensions, approximate (H x W x D)17.3 x 8.6 x 3.8 cm (6.8 x 3.4 x 1.5 in)17.5 x 15.5 x 4 cm (7 x 6.5 x 1.7 in) 
Battery3 AA 
Warranty3 years2 years 
CaseHard case 
Temperature areaSurface temperatureInternal, ambient and non-contact surface temperature 
Do you want to use industry standard thermocouples?   
Time stampRelativeTime of day 
Min-Max-Avg-DifMin-Max-Avg-DifMin-Max-Avg-Dif 
Soft-key feature menu navigation  
Multiple language interface  
English, French, Chinese, Spanish, Portuguese, German user interface  
Material type adjustment (emissivity)Material table or 0.1 to 1.00 by 0.01 
High and low alarmsHigh and low alarms 
Two levels of backlight  
Hands-free logging  
Number of on-board memory locations99 
PC download and softwareFlukeView Forms 
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