Fluke 54 II B Dual Input Digital Thermometer with Data Logging

Fluke 54 II B dual input digital thermometer can log up to 500 points of data to internal memory. Fast response and laboratory accuracy (0.05% + 0.3°C)




Laboratory accuracy. Wherever you go

Fluke 54 II B dual input digital thermometer can log up to 500 points of data to internal memory. Fast response and laboratory accuracy (0.05% + 0.3°C). Take contact temperature for checking motors, insulation, breakers, pipes, corroded connections, liquids, and wires with industrial standard J, K, T, E, N, R, and S type thermocouple (temperature sensors).


Product Highlights

The Fluke 54 II B offers a wide range of capabilities:

  • Large backlit dual display shows any combination of T1, T2 (52 and 54 only), T1-T2 (52 and 54 only), plus MIN, MAX, or AVG
  • Recall function allows logged data to be easily reviewed on the meter display
  • Infrared USB communication port allows data to be exported to optional FlukeView Forms® Temperature PC software for further analysis and graphing
  • Data Logging up to 500 points of data with user adjustable recording interval
  • Relative time clock on MIN, MAX, and AVG provides a time reference for major events
  • Electronic Offset function allows compensation of thermocouple errors to maximize overall accuracy
  • Measures J, K, T, E, R, S, and N-type thermocouples
  • Readout in °C, °F, or Kelvin (K)
  • Splash and dust resistant case protected by impact absorbing holster
  • User-friendly front panel is easy to set up and operate
  • Sleep mode increases battery life; typical 1000-hour battery life
  • Battery door allows easy battery replacement without breaking the calibration seal
  • Optional ToolPak accessory allows the thermometer to hang from any metal object (with the rare earth magnet) or secure around a pipe (with hook-and-loop straps) for hands-free operation
  • 3 year warranty


General Specifications
Temperature accuracyAbove -100°CJ, K, T, E, and N-type: ±[0.05% + 0.3°C]1
R and S-type: ±[0.05% + 0.4°C]1
Below -100°CJ, K, E, and N-types: ±[0.20% + 0.3°C]1
T-type: ±[0.50% + 0.3°C]
TemperatureJ-type-210°C to 1200°C
K-type-200°C to 1372°C
T-type-250°C to 400°C
E-type-150°C to 1000°C
N-type-200°C to 1300°C1
R and S-type0°C to 1767°C1
Temperature scaleITS-90
Applicable standardsNIST-175
Display resolution0.1°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 categoryCSA C22.2 No. 1010.1 1992; EN 61010 Amendments 1,2
Agency approvalsCE, CSA, TÜV (pending)
Mechanical and General Specifications
Size (L x W x D)173 x 86 x 38 mm
Weight400 g
Batteries3 AA batteries; typical 1000-hour life


Models (1)
Model NameDescription
Fluke 54 IIFluke 54 II Dual Input Digital Thermometer

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



Cases & Holsters (7)
Model NameDescription
Fluke C101Fluke C101 Hard Case
Fluke C50Fluke C50 Meter Case
Fluke C510Fluke C510 Leather Meter Case
Fluke C530Fluke C530 Leather Accessory Case
Fluke C550Fluke C550 Tool Bag
Fluke CXT170Fluke CXT170 Extreme Case
Fluke TPAKFluke TPAK ToolPakTM Magnetic Meter Hanger
Software (1)
Model NameDescription
Fluke FlukeView FormsFluke FlukeView® Forms Software with Cable
Temperature Accessories (14)
Model NameDescription
Fluke 700TC2Fluke 700TC2 Thermocouple Plug Kit 700TC2
Fluke 80CJ MFluke 80CJ-M type J Male Mini-Connectors
Fluke 80CK MFluke 80CK-M type K Male Mini-Connectors
Fluke 80PJ-EXTFluke 80PJ-EXT Extension Wire Kit
Fluke 80PK 1Fluke 80PK-1 Bead Probe
Fluke 80PK 22Fluke 80PK-22 SureGripTM Immersion Temperature Probe
Fluke 80PK 24Fluke 80PK-24 SureGripTM Air Temperature Probe
Fluke 80PK 25Fluke 80PK-25 SureGripTM Piercing Temperature Probe
Fluke 80PK 26Fluke 80PK-26 SureGripTM Tapered Temperature Probe
Fluke 80PK 27Fluke 80PK-27 SureGripTM Industrial Surface Temperature Probe
Fluke 80PK 3AFluke 80PK-3A Surface Probe
Fluke 80PK 8Fluke 80PK-8 Pipe Clamp Temperature Probe
Fluke 80PKFluke 80PK-EXT Extension Wire Kit
Fluke 80PTFluke 80PT-EXT Extension Wire Kit



51 & 52 Series II Users ManualDownload
53 & 54 Series II Users ManualDownload
53IIB/54IIB Users ManualDownload
51, 52, 50S and 50D Statement of Memory VolatilityDownload
51, 52, 53, 54 (and Series II and Series IIB) Statement of Memory VolatilityDownload
51-54 Series II Service ManualDownload
51-54 Series II Service Manual SupplementDownload
51-54 Series II Product OverviewDownload
51-54 Series II, 53-54 Series IIB CE Declaration of ConformityDownload