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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 54 II B Dual Input Digital Thermometer with Data Logging
Fluke 51 II Handheld Digital Probe Thermometer54 II B Data Logging Thermometer with Dual Input
Recommended usesLaboratory, quality assurance, process calibration, food safety, HVACLaboratory, quality assurance, process calibration, food safety, HVAC 
Probe typeThermocouple K, J, T, EThermocouple K, J, T, E, N, R, S 
Number of inputs12 
Temperature rangeT-type: -250 °C to +400 °C (-418 °F to +752 °F)T-type: -250 °C to +400 °C (-418 °F to +752 °F) 
What temperature range do you need to measure?500 °C (+932 °F)500 °C (+932 °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?  
Non-contact temperature range500 °C (+932 °F)500 °C (+932 °F) 
Form factorFlatFlat 
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)17.3 x 8.6 x 3.8 cm (6.8 x 3.4 x 1.5 in) 
Battery3 AA 
Warranty3 years3 years 
Temperature areaSurface temperatureSurface temperature 
Do you want to use industry standard thermocouples?   
Will you use the thermometer in a hazardous location where there might be explosive gases?  
Time stampRelativeTime of day 
Min-Max-Avg-DifMin-Max-Avg-DifMin-Max-Avg-Dif 
Hands-free logging  
Number of on-board memory locations500 
PC download and softwareFlukeView Forms 
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