COVID-19 News: Open for Business
All Fluke Products

Fluke 54 II Dual Input Digital Thermometer

Reward Points (?)

Logged in, worth £7.30, read more.

£438.00 £365.00
Only 1 in Stock Free UK Delivery* Delivery Options

UK - Zone 1 Orders

England, Wales & most of Scotland.

Free 3-5 Working Day1
Orders Over £99 & Selected Items

Economy 2-3 Working Day1
From £1.95

Tracked 2-3 Working Day

Express Next Working Day

Priority Next Working Day
£14.95 (Pre-Noon)
£19.95 (Pre-10:30am)

Saturday & Sunday
£14.95 (Pre-Noon)

UK - Zone 2 Orders

Highlands, Islands & Northern Ireland.

Free 3-5 Working Day1
Selected Items (Calculated at Checkout)

Economy 2-3 Working Day2
From £1.95

Tracked 2-3 Working Day

International Orders

Delivery is calculated at checkout.

Note: Next day delivery is not guaranteed for orders placed after 3:00pm. Prices Ex VAT.

1, 2 See delivery page for more details.

Advice & Support
Price Match Request

A laboratory-grade testing instrument, Fluke's 54 II thermometer is also the best overall model available in Fluke's 50 series of digital thermometers.

The 54 II measures temperature via the use of various different thermocouples types. Like other models in the range it is compatible with J, K, T and e type thermocouples; this is increased further by the inclusion of R, S and N thermocouple capabilities, bringing up the total number of connectible thermocouples up to 7. The 54 II is also a dual input digital thermometer which means it can be used with a combination of two thermocouples at the same time for comprehensive temperature measurement analysis.

Depending on the type of thermocouple equipped to the unit, the overall temperature measurement capabilities of the device change. Here's the list of possible ranges and thermocouple types:

  • J 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 °C
  • R and S Type: 0 °C to 1767 °C

The Fluke 54 II is suitable both for single measurements of alternatively can be used to track temperatures over a time period thanks to the devices' in-built memory which can store up to 500 data points. Users can also choose the overall recording interval, so its possible to connect up the unit, leave it measuring and then view the data at a later point. The 54 II also comes with a USB port that allows it to interface with PC and via the use of Fluke's FlukeView Forms Temperature PC software this data can be interacted with further.

Fluke 54 II Digital Thermometer Key Features

  • Relative time clock gives context to measurement data
  • Eletronic offset adjustment function negates incorrect thermocouple measurements
  • Compatible with J, K, T, E, N, R and S thermocouples
  • Dual input - measure from two thermocouples at the same time
  • Readouts in Celsius, Fahrenheit or Kelvin
  • Splash and dust resistant casing
  • Casing also resists impact
  • Sleep mode to increase battery life
  • Battery door makes sure calibration seal isn't broken
  • Large backlit screen
  • Recall function
  • Stores up to 500 data points on the tester
  • USB port for communication with PC

Full List of Products Included

  • Fluke 54 II Digital Thermometer
  • Impact Absorbing Holster
  • 2 x 80PK-1 Bead Probe Thermocouples
Accessories related to this product:
  1. Fluke TPAK ToolPak Meter Hanging Kit In Use
    Fluke TPAK ToolPak Meter Hanging Kit
    Lead Time: 1-2 Weeks
    £35.99 £29.99
  2. Fluke C510 Leather Meter Case
    £73.14 £60.95
  3. Fluke 80PK-22 SureGrip Immersion Temperature Probe
    £93.00 £77.50
  4. Fluke 80PK 8 Pipe Clamp Temperature Probe Type K
    £169.14 £140.95
  5. Fluke C550 Tool Bag Closed
    £114.00 £95.00
  6. Fluke 80PK-24 SureGrip Type K Air Temperature Probe
    £118.74 £98.95
  7. Fluke 80PK 27 SureGrip Industrial Surface Probe
    £362.34 £301.95
  8. Fluke CXT170 Rugged Pelican Hard Case
    £172.80 £144.00
  9. Fluke 80PK-25 SureGrip Type K Piercing Temperature Probe
    £109.20 £91.00
  10. Fluke C101 Hard Case
    Fluke C101 Hard Case
    Only 1 in Stock
    £57.60 £48.00
  11. Fluke 700TC2 Thermocouple Plug Kits 5 types
    £102.00 £85.00
  12. Fluke C50 Soft Meter Case
    £35.94 £29.95
Part Code3821081

Fluke 54 II Technical Specifications

Temperature accuracy
Above -100 °C:  J, K, T, E, and N-type: ±[0.05% + 0.3°C]*

 R and S-type: ±[0.05% + 0.4°C]*

Below -100 °C:  J, K, E, and N-types: ±[0.20% + 0.3°C]*

 T-type: ±[0.50% + 0.3°C]

J-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 °C *
R and S-type:  0 °C to 1767 °C *
Temperature scale

Applicable standards

Display Resolution

 0.1 °C, 0.1 K < 1000

 1°C, 1 K >=1000
*  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 & General Specifications

 173 mm L x 86 mm W x 38 mm

 400 g

 3 AA batteries; typical 1000-hour life
0 Reviews Overall Rating

Write a Review

Write Your Own Review
You're reviewing:Fluke 54 II Dual Input Digital Thermometer
Your Rating

Subscribe to our Newsletter

International Enquiry