

Fluke 51 II Handheld Digital Probe Thermometer
The Fluke 51 II Handheld Digital Probe Thermometer offers fast, accurate temperature measurement up to 900°C using J, K, T, or E-type thermocouples. Designed for industrial environments, it features a backlit display, long battery life, rugged build, and user-friendly interface—ideal for maintenance, HVAC, and lab applications.
Features
-
High accuracy (0.05% + 0.3°C)
-
Supports J, K, T, E thermocouples
-
Up to 1000-hour battery life
-
Backlit, easy-to-read display
-
Rugged, splash- and dust-resistant case
-
Electronic offset compensation
-
Measures up to 900°C (1600°F)
-
Simple, user-friendly interface
-
Optional ToolPak for hands-free use
-
3-year warranty
Temperature Accuracy
| Above -100 °C: J/K/T/E/N: ±(0.05% + 0.3 °C); R/S: ±(0.05% + 0.4 °C) |
Thermocouple Range
| J: -210 °C to 1200 °C K: -200 °C to 1372 °C T: -250 °C to 400 °C |
Temperature Scale
| ITS-90 |
Standards
| NIST-175 |
Display Resolution
| 0.1 °C (<1000 °C), 1 °C (≥1000 °C) |
Operating Temperature
| -10 °C to 50 °C |
Storage Temperature
| -40 °C to 60 °C |
Humidity
| 0–90% (≤35 °C), 0–70% (≤50 °C) |
Overvoltage Category
| CSA C22.2 No. 1010.1; EN 61010 A1/A2 |
Agency Approvals
| CE, CSA, TÜV (pending) |
Dimensions (L × W × D)
| 173 × 86 × 38 mm |
Weight
| 400 g |
Battery
| 3 × AA batteries; ~1000-hour battery life |
Fluke 51 II Handheld Digital Probe Thermometer
The Fluke 51 II Handheld Digital Probe Thermometer offers fast, accurate temperature measurement up to 900°C using J, K, T, or E-type thermocouples. Designed for industrial environments, it features a backlit display, long battery life, rugged build, and user-friendly interface—ideal for maintenance, HVAC, and lab applications.
Features
-
High accuracy (0.05% + 0.3°C)
-
Supports J, K, T, E thermocouples
-
Up to 1000-hour battery life
-
Backlit, easy-to-read display
-
Rugged, splash- and dust-resistant case
-
Electronic offset compensation
-
Measures up to 900°C (1600°F)
-
Simple, user-friendly interface
-
Optional ToolPak for hands-free use
-
3-year warranty
Temperature Accuracy
| Above -100 °C: J/K/T/E/N: ±(0.05% + 0.3 °C); R/S: ±(0.05% + 0.4 °C) |
Thermocouple Range
| J: -210 °C to 1200 °C K: -200 °C to 1372 °C T: -250 °C to 400 °C |
Temperature Scale
| ITS-90 |
Standards
| NIST-175 |
Display Resolution
| 0.1 °C (<1000 °C), 1 °C (≥1000 °C) |
Operating Temperature
| -10 °C to 50 °C |
Storage Temperature
| -40 °C to 60 °C |
Humidity
| 0–90% (≤35 °C), 0–70% (≤50 °C) |
Overvoltage Category
| CSA C22.2 No. 1010.1; EN 61010 A1/A2 |
Agency Approvals
| CE, CSA, TÜV (pending) |
Dimensions (L × W × D)
| 173 × 86 × 38 mm |
Weight
| 400 g |
Battery
| 3 × AA batteries; ~1000-hour battery life |
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