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 Handheld Digital Probe Thermometer	Fluke 568 Ex Intrinsically Safe Infrared Thermometer

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Recommended uses

Laboratory, quality assurance, process calibration, food safety, HVAC

Electrical, refining, pharmaceutical, process industries, mechanical, plant, diesel, HVAC

What temperature range do you need to measure?	500 °C (+932 °F)	-40 °C to +800 °C (-40 °F to +1472 °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?

Non-contact temperature range	500 °C (+932 °F)	-40 °C to +800 °C (-40 °F to +1472 °F)
Accuracy		Greater of ± 1 % or ± 1.0 °C (± 2.0 °F)
Distance to spot (D:S)		50:1
Sighting		Laser point
Typical distance to target		Up to 7.5 m (25 ft)

Form factor	Flat	Pistol
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)
Battery	3 AA	3 AAA
Warranty	3 years	2 years
Case		Hard case

Temperature area

Surface temperature

Internal, ambient and non-contact surface 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 stamp	Relative
Min-Max-Avg-Dif	Min-Max-Avg-Dif	Min-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 alarms		High and low alarms
Hazardous location approval
Hands-free logging

Number of on-board memory locations

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