INFRARED THERMOMETERS, 561 (Infrared and Contact Thermometer)

IR Thermometer with K-type thermocouple capability
Lighten up your toolbox. The Fluke 561 IR and contact thermometer, combines the temperature measurement functions that industrial, electrical, and HVAC/R professionals need, all in one tool. It measures both infrared and contact temperature, replacing several other test tools. It’s fast, efficient, and easy to use, saving you valuable time and effort.
With the Fluke 561 infrared thermometer, you can also take contact and ambient temperatures in the way that’s best for you. Use the IR thermometer to measure hot, moving, electrically energized, and hard-to-reach objects instantly. Check motors, insulation, breakers, radiant heating, pipes, corroded connections, and wires. Plus, scan ducts, and other hard-to-reach objects from the floor-leave your ladder in the truck. You can use the Fluke 561’s handy flexible pipe probe, or plug in any industry standard type K mini connector thermocouple probe you already own to take super-heat or internal temperatures.

Product Description


  • IR thermometer for quick measurements up close, or at a distance, without a ladder
  • Contact thermometry capability, compatible with all standard mini-connector type K thermocouples, preserves your investment in thermocouples
  • Fabric hook-and-loop fastener pipe probe for superheat and sub-cooling and other contact and ambient measurements
  • Single-point laser sighting
  • Temperature range of -40 °C to 550 ° C (-40 °F to 1022 °F) covers most industrial and residential applications
  • Easy emissivity adjustment (Lo, Med, Hi) for measuring pipes and other shiny materials more accurately
  • Lightweight (just 12 ounces/340 grams) and portable
  • Very easy to use
  • Efficient – no need to shut down equipment when making IR measurements
  • MIN, MAX, and DIF functions help you quickly identify problems
  • Scan large areas or small objects quickly and efficiently


General Specifications
 -40 to 550 °C (-40 to 1022 ° F)
Display Resolution
 0.1°C (0.1 °F) of reading
D:S (Distance to spot size)
Easy Emissivity Selector
 Adjustable with three settings:
 Low (0.3), Medium (0.7). High (0.95)
Display Accuracy [Assumes ambient operating temperature of 23°C(73°F) to 25°C(77°F)]
 ±1.0 % of reading ±1 % of reading or ±1 °C (±2 °F), whichever is greater below 0 °C/32 °F, ±1 °C (±2 °F) ± 0.1°/1°
Response Time
 500 mSec (95 % of reading)
 ±0.5 % of reading or ±1 °C (±2 °F), whichever is greater
Spectral Response
 8 µm to 14 µm
Laser Sighting
 Single point laser
Laser Shutoff
 Laser turns off above ambient temperature of 40 °C (104 °F)
Laser Power
 Class 2(II) operation; Output <1mW, wavelength 630-670 nm
Relative Humidity
 10 % to 90 % RH non-condensing, at <30 °C (86 °F)
Power, battery life
 2 AA batteries (alkaline or NiCD)
Battery Life
 12 hours
Display Hold
 7 seconds
Backlit Display
 Yes, LCD with dual temperatures (current and MAX/MIN/DIF/KTC), low battery, F/C indicator, and Scan/Hold options
 2 years
Operating Temperature
 0 °C to 50 °C (32 °F to 120 °F)
Storage Temperature
 -20 °C to 65 °C (-25 °F to 150 °F)
MAX, MIN, DIF Temperatures
Thermocouple Type K Mini Adapter Input
 Yes, compatible with industry standard K type probes with mini-connector. Displays to the thermometer temperature range.
Thermocouple Type K Fabric Hook-and-Loop Fastener Pipe Probe
 Yes, with a temperature range of 0 °C to 100 °C (32 °F to 212 °F) and accuracy of ±2.2 °C (±4 °F)
HVAC Measurement Guide

Models and Accessories:

Model Name
Fluke 561
  • 561 IR thermometer
  • K-Type thermocouple
  • Fabric hook-and-loop fastener pipe probe
  • Hard carrying case
  • 2 AA batteries
  • Users manual
Cases and Holsters
H6 Infrared Thermometer Holster
80PJ-1 Bead Probe
80PK-1 Bead Probe
80PK-25 SureGrip™ Piercing Temperature Probe
80PK-27 SureGrip™ Industrial Surface Temperature Probe
80PK-3A Surface Probe
80PK-8 Pipe Clamp Temperature Probe

Fluke 561 HVAC Pro IR Thermometer Applications

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