Fluke 51 II Handheld Digital Probe Thermometer

Fluke 51 II Handheld Digital Probe Thermometer

Fluke 51 II Handheld Digital Probe Thermometer

Single-Input Precision Thermometer for Field and Lab Use

Product Description Fluke 51 II Handheld Digital Probe Thermometer

The Fluke 51 II is a compact and rugged handheld digital thermometer designed for precision temperature measurement in laboratory work, quality assurance, process calibration, food safety, and HVAC applications. It supports a single thermocouple input and is compatible with thermocouple types J, K, T, and E. The device features a large, backlit display for easy viewing and provides accurate readings in °C, °F, or Kelvin.

The thermometer includes a relative time clock that records MIN, MAX, and AVG temperature values, helping users track when temperature events occur. With exceptional battery life and straightforward controls, the Fluke 51 II is built for reliable, everyday use in demanding environments.

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Key Features Fluke 51 II Handheld Digital Probe Thermometer

• Single-input digital thermometer ideal for lab, QA, calibration, food safety, and HVAC applications

• Compatible with thermocouple types J, K, T, and E

• Displays temperature readings in °C, °F, or K

• Large backlit display for enhanced visibility in low-light conditions

• Relative time-stamping on MIN, MAX, and AVG readings for key event reference

• Temperature scale conforms to ITS-90 standards

• Compact and ergonomic with shock-absorbing, splash-resistant casing

• Long battery life—up to 1000 hours of typical usage on 3 AA batteries

• Complies with international safety standards (CE, CSA, EN 61010)

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Technical Specifications

• Temperature Accuracy

  • Above -100 °C:

    • Types J, K, T, E, and N: ±[0.05% + 0.3 °C]

    • Types R and S: ±[0.05% + 0.4 °C]

  • Below -100 °C:

    • Types J, K, T, and N: ±[0.20% + 0.3 °C]

    • Type T: ±[0.50% + 0.3 °C]

• Measurement Range by Thermocouple Type

  • Type J: –210 °C to 1200 °C

  • Type K: –200 °C to 1372 °C

  • Type T: –250 °C to 400 °C

  • Type E: –150 °C to 1000 °C

  • Type N: –200 °C to 1300 °C¹

  • Types R and S: 0 °C to 1767 °C¹

• Display Resolution

  • 0.1 °C or K for values under 1000

  • 1 °C or K for values 1000 and above

• Environmental Specs

  • Operating Temperature: –10 °C to 50 °C

  • Storage Temperature: –40 °C to 60 °C

  • Humidity (non-condensing):

    • 0%–90% at 0 °C to 35 °C

    • 0%–70% at 0 °C to 50 °C

• Power Supply

  • 3 AA batteries (typical life: 1000 hours)

• Physical Specs

  • Dimensions: 173 x 86 x 38 mm

  • Weight: 400 g

• Safety Compliance

  • Overvoltage Category: CSA C22.2 No. 1010.1, EN 61010

  • Certifications: CE, CSA, TÜV (pending)

¹ Note: Only Fluke 53 II B and 54 II B models support thermocouple types N, R, and S.

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Summary

Overview:
The Fluke 51 II is a robust, single-input digital thermometer offering reliable performance across a range of professional applications. It’s simple to use, delivers high accuracy, and features a durable design for everyday field or lab use.

Key Selling Points:

• Precise temperature measurements with MIN/MAX/AVG tracking

• Supports four thermocouple types (J, K, T, E)

• Long 1000-hour battery life

• Rugged, splash-resistant design with backlit display

• Ideal for industrial, laboratory, and food safety monitoring