Product selection guide: Contact thermometers | Fluke
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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 54 II B Dual Input Digital Thermometer with Data Logging
Fluke 568 Ex Intrinsically Safe Infrared Thermometer
54 II B Data Logging Thermometer with Dual InputFluke 568 Ex Intrinsically Safe Infrared Thermometer
Non-contact temperature range500 °C (+932 °F)-40 °C to +800 °C (-40 °F to +1472 °F) 
AccuracyGreater of ± 1 % or ± 1.0 °C (± 2.0 °F) 
Distance to spot (D:S)50:1 
SightingLaser point 
Typical distance to targetUp to 7.5 m (25 ft) 
Recommended usesLaboratory, quality assurance, process calibration, food safety, HVACElectrical, refining, pharmaceutical, process industries, mechanical, plant, diesel, HVAC 
Probe typeThermocouple K, J, T, E, N, R, SThermocouple K 
Number of inputs21 
Temperature rangeT-type: -250 °C to +400 °C (-418 °F to +752 °F)-270 °C to +1372 °C (-454 °F to +2501 °F) 
Number of on-board memory locations50099 
PC download and softwareFlukeView Forms 
What temperature range do you need to measure?500 °C (+932 °F)-40 °C to +800 °C (-40 °F to +1472 °F) 
Do you need to download data for analysis and reporting?  
Do you need on-board memory for trending and comparison?  
Do you need to save photos of your measurements for your reports?  
Will you do any hands-free, real-time temperature monitoring with a PC?  
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?  
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)17.69 x 5.18 x 16.36 cm (6.965 x 2.039 x 6.441 in) 
Warranty3 years2 years 
Battery3 AAA 
CaseHard case 
Temperature areaSurface temperatureInternal, ambient and non-contact surface temperature 
Time stampTime of day 
Min-Max-Avg-DifMin-Max-Avg-DifMin-Max-Avg-Dif 
Hands-free logging   
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 
Hazardous location approval  
Will you use the thermometer in a hazardous location where there might be explosive gases?   
Do you want to use industry standard thermocouples?   
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