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The Fluke 51 II is a single-input digital thermometer that is compatible with J, K, T and E type thermocouple probes.
With ultra-fast response and laboratory accuracy of 0.05% + 0.3°C, Fluke's 51 II is a must for professional temperature measurements in practically any application.
The overall measurement range of the Fluke 51 II varies depending on the probe type used. Measurements can be output in Kelvin, Celsius or Fahrenheit and the following measurement ranges are possible for each different type of thermocouple:
The Fluke 51 II digital thermometer can be used in any environment thanks to its backlit LCD screen and splash/dust resistant casing (ideal for use in industrial conditions).
As well as individual measurements the 51 II can also calculate and display the MAX, MIN and AVG values taken over a period of time. A relative time clock facility built into the thermometer also provides a time reference for major events, making it easier to determine problems.
The Fluke 51 II is actually the entry-level model in an entire series of digital thermometers from Fluke. This table outlines the differences.
|Model Number||51 II||52 II||53 II||54 II|
|Thermocouple Types||J, K, T and E||J, K, T and E||J, K, T, E, N, R and S||J, K, T, E, N, R and S|
|Number of Inputs||1||2||1||2|
|Time Stamp||Relative time||Relative Time||Time of day||Time of day|
|Dual Display with Backlight||Yes||Yes||Yes||Yes|
|T1-T2 (True Differential)||-||-||Yes||Yes|
|Datalogging (Up to 500 Points)||-||-||Yes||Yes|
|IR Data Port for Interface to PC||-||-||Yes||Yes|
|Compatible with Optional FlukeView Software||-||-||Yes||Yes|
|Temperature Accuracy||Above 100°C (type J, K, T, E and N): ±(0.05% + 0.3°C)*
R and S type: ±(0.05% + 0.4°C)
|Below 100°C (type J, K, E and N: ±(0.20% + 0.3°C)*
T-type: ±(0.50% + 0.3°C)
|Temperature Range||J-Type: -210 to 1200°C|
|K-Type: -200 to 1372°C|
|T Type: -250 to 400°C|
|E-Type: -150 to 1000°C|
|N-Type: -200 to 1300°C*|
|R and S Type: 0 to 1767°C*|
|Display Resolution||0.1°C, 0.1K < 1000
1°C, 1K > 1000
|*Note: only the Fluke 53 and 54 II thermometers are suitable for use with N, R and S thermocouples|
|Operating Temperature||-10 to 50°C|
|Storage Temperature||-40 to 60°C|
|Humidity (Without Condensation)||0 to 90%: 0 to 35°C|
|0 to 70%: 0 to 50°C|
|Overvoltage Category||CSA C22.2 No 1010.1 1992, EN 61010 Amendments 1, 2|
|Agency Approvals||CE, CSA, TUV (pending)|
|Size||173 x 86 x 38mm (L x W x H)|
|Battery Type||3 x AA|
|Battery Life||Typical 1000 hour|
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