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Test & Measuring


  • $709.00

Fluke 52 II Dual Probe Digital Thermometer

Key features

  • Dual-input digital thermometer for lab, QA, process calibration, food safety and HVAC
  • Shows any combination of T1, T2, T1-T2, plus MIN, MAX, or AVG on the large backlit dual display
  • Features fast response and laboratory accuracy (0.05% + 0.3°C)
  • Includes a relative time clock on MIN, MAX, and AVG to provide a time reference for major events


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Models: Fluke 52 II Dual Probe Digital Thermometer

Fluke 52 II Dual Input Digital Thermometer


  • Impact absorbing holster
  • Two 80PK-1 beaded probe thermocouples

FLUKE-52-2 50HZ

Product overview: Fluke 52 II Dual Probe Digital Thermometer

The Fluke 52 II dual-input digital thermometer delivers fast response with laboratory accuracy (0.05% + 0.3°C). You can use the 52 II to measure two contact temperature inputs simultaneously on motors, insulation, breakers, pipes, corroded connections, liquids, and wires with industrial standard J, K, T, or E-type thermocouple temperature sensors. The user friendly-front panel and large, backlit display make it easy to view results from both inputs in multiple ways. And the sleep mode feature preserves battery life to give you a typical thousand hours of operation.

Other useful features:

  • Easy-to-access battery door that allows replacing the battery without breaking the calibration seal
  • Comes with splash- and dust-resistant case protected by an impact-absorbing holster and a three-year warranty
  • Powered by three, standard AA batteries -30-
  • Features an electronic offset function that compensates for thermocouple errors to maximize overall accuracy
  • Measures J, K, T, and E-type thermocouples
  • Handles temperatures up to 900°C (1600°F)
  • Presents results in °C, °F, or Kelvin (K)
  • Provides a user-friendly front panel that is easy to set up and operate
  • Offers sleep mode to increase battery life; 1000-hour battery life typical
  • Offers optional ToolPak accessory to hang the thermometer from any metal object (with the rare earth magnet) or secure around a pipe (with hook-and-loop straps) for hands-free operation

Temperature accuracy

Above -100°C

J, K, T, E, and N-type: ±[0.05% + 0.3°C]1

R and S-type: ±[0.05% + 0.4°C]1

Below -100°C

J, K, E, and N-types: ±[0.20% + 0.3°C]1

T-type: ±[0.50% + 0.3°C]



-210°C to 1200°C


-200°C to 1372°C


-250°C to 400°C


-150°C to 1000°C


-200°C to 1300°C1

R and S-type

0°C to 1767°C1

Temperature scale


Applicable standards


Display resolution

0.1°C, 0.1 K < 1000

1°C, 1 K ≥ 1000

1. Only the Fluke Models 53 II B and 54 II B thermometers are capable of measuring N, R, and S-type thermocouples.

Environmental Specifications

Operating temperature

-10°C to 50°C

Storage temperature

-40°C to 60°C

Humidity (without condensation)

0% to 90%; 0°C to 35°C

0% to 70%; 0°C to 50°C

Safety Specifications

Overvoltage category

CSA C22.2 No. 1010.1 1992; EN 61010 Amendments 1,2

Agency approvals

CE, CSA, TÜV (pending)

Mechanical and General Specifications

Size (L x W x D)

173 x 86 x 38 mm


400 g


3 AA batteries; typical 1000-hour life