Fluke 51 II Handheld Digital Probe Thermometer

Fluke 51 II Handheld Digital Probe Thermometer

A high-performance, single-input digital thermometer designed for accuracy and speed in professional settings.

Whether you're in a lab, on a factory floor, or out in the field, the Fluke 51 II Handheld Digital Probe Thermometer provides fast, reliable, and lab-accurate temperature readings. It is the ideal tool for professionals in quality assurance, process calibration, HVAC, and food safety who require precise contact temperature measurements.

Key Features:

• Versatile Thermocouple Compatibility: Measures J, K, T, and E-type thermocouples, making it adaptable for a wide range of applications and sensors.
• High Accuracy: Delivers fast responses with laboratory-grade accuracy of 0.05% + 0.3°C.
• Clear, Readable Display: Features a large, backlit digital display for easy viewing in any lighting condition. Results can be shown in Celsius (°C), Fahrenheit (°F), or Kelvin (K).
• Data Logging and Time Stamping: A relative time clock on MIN, MAX, and AVG functions provides a time reference for major events, helping you track fluctuations and pinpoint issues.

Product Overview

The Fluke 51 II digital thermometer is engineered for performance and durability. This single-input device allows you to measure contact temperature on a variety of surfaces and materials, including motors, insulation, pipes, breakers, liquids, and corroded connections. Its user-friendly front panel and intuitive design mean you can get to work immediately, without a steep learning curve.

Built for the demands of the real world, the Fluke 51 II features a sleep mode to preserve battery life, offering a typical 1000 hours of operation from three standard AA batteries. Its robust construction ensures it can withstand the rigors of daily use.

Enhanced Functionality and Durability

• Robust and User-Friendly Design: The thermometer is housed in a splash- and dust-resistant case and protected by an impact-absorbing holster. An easy-access battery door allows for quick replacement without breaking the calibration seal.
• Optimized Accuracy: An electronic offset function lets you compensate for thermocouple errors, maximizing the overall accuracy of your measurements.
• Wide Temperature Range: Capable of handling extreme temperatures up to 900°C (1600°F), depending on the thermocouple type.
• Hands-Free Operation: The optional ToolPak accessory allows you to hang the thermometer from a metal object using a strong magnet or secure it around a pipe with hook-and-loop straps, freeing up your hands to manage probes.

Technical Specifications

Temperature Accuracy

• Above -100°C: J, K, T, E-type: ±[0.05% + 0.3°C]¹
• Below -100°C: J, K, E-types: ±[0.20% + 0.3°C]¹; T-type: ±[0.50% + 0.3°C]

Temperature Range

• 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

Display Resolution

• 0.1°C / 0.1 K for readings below 1000
• 1°C / 1 K for readings at or above 1000

Applicable Standards

• ITS-90 Temperature Scale
• NIST-175

Operating Temperature

• -10°C to 50°C (14°F to 122°F)

Storage Temperature

• -40°C to 60°C (-40°F to 140°F)

Humidity

• 0% to 90% (0°C to 35°C)
• 0% to 70% (35°C to 50°C), non-condensing

Safety & Approvals

• Overvoltage Category: CSA C22.2 No. 1010.1 1992; EN 61010
• Agency Approvals: CE, CSA, TÜV

Dimensions (L x W x D)

• 173 x 86 x 38 mm (6.8 x 3.4 x 1.5 in)

Weight

• 400 g (14 oz), including holster and batteries

Battery

• 3 AA batteries

Battery Life

• 1000 hours typical

Warranty

• Three years

¹ Note: Fluke 53 II B and 54 II B models are required for N, R, and S-type thermocouples.