Description
Overview
The Fluke 54 II B Dual Input Data Logging Thermometer is a professional handheld contact thermometer designed for technicians, engineers, maintenance teams, and industrial users who need reliable temperature measurement with dual-input capability and internal data logging. Built for field and plant environments, the Fluke 54 II B can measure with J, K, T, E, R, S, and N-type thermocouples and log up to 500 data points to internal memory, making it suitable for both spot checks and temperature trend documentation.
With its large backlit dual display, the instrument can show T1, T2, T1-T2, MIN, MAX, or AVG readings, allowing users to compare two measurement points or monitor changes during troubleshooting. The recall function lets users review logged readings directly on the meter, while the infrared USB communication port supports exporting data to optional FlukeView Forms Temperature PC software for further analysis and graphing.
The Fluke 54 II B is especially useful where technicians must document temperature behavior across motors, insulation, breakers, pipes, corroded connections, liquids, and wires. Its rugged design includes a splash- and dust-resistant case protected by an impact-absorbing holster, making it a practical choice for industrial maintenance, electrical service, HVAC work, process checks, and preventive maintenance programs.
Key Features
- Dual-input digital thermometer for comparing two temperature points.
- Internal data logging for up to 500 points with user-adjustable recording interval.
- Large backlit dual display for T1, T2, T1-T2, MIN, MAX, or AVG readings.
- Supports J, K, T, E, R, S, and N-type thermocouples.
- Temperature readout in °C, °F, or Kelvin.
- Electronic Offset function to compensate for thermocouple errors.
- Relative time clock for MIN, MAX, and AVG readings.
- Recall function for reviewing logged data on the meter display.
- Infrared USB communication port for optional FlukeView Forms Temperature PC software.
- Splash- and dust-resistant case with impact-absorbing holster.
- Sleep mode and typical 1000-hour battery life.
- Battery door designed for replacement without breaking the calibration seal.
- Optional ToolPak compatibility for hands-free positioning.
Applications
The Fluke 54 II B Data Logging Thermometer is suitable for professional temperature checks in electrical, mechanical, and industrial environments. Typical applications include checking motors, insulation, breakers, pipes, corroded connections, liquids, and wires using compatible thermocouple probes.
For industrial users, the Fluke 54 II B also fits broader temperature measurement tasks where wide thermocouple support is needed, including applications involving furnaces, kilns, freezers, and other industrial equipment. Newark’s product overview also positions it for broad industrial applications requiring wide temperature range measurement.
The data logging function makes the instrument useful for maintenance records, troubleshooting reports, commissioning checks, thermal comparison checks, and recurring preventive maintenance inspections. With dual inputs and T1-T2 display capability, users can compare inlet/outlet temperatures, ambient/process differences, or two surface points during diagnostics.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Fluke |
| Model | 54 II B |
| Product Type | Dual Input Data Logging Thermometer |
| Data Logging | Up to 500 points with user-adjustable recording interval |
| Inputs | Dual thermocouple input |
| Thermocouple Types | J, K, T, E, R, S, and N |
| 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] |
| Temperature Accuracy Below -100°C | J, K, E, and N-type: ±[0.20% + 0.3°C]; T-type: ±[0.50% + 0.3°C] |
| J-type Range | -210°C to 1200°C |
| K-type Range | -200°C to 1372°C |
| T-type Range | -250°C to 400°C |
| E-type Range | -150°C to 1000°C |
| N-type Range | -200°C to 1300°C |
| R and S-type Range | 0°C to 1767°C |
| Temperature Scale | ITS-90 |
| Applicable Standard | NIST-175 |
| Display Resolution | 0.1°C / 0.1 K below 1000; 1°C / 1 K at or above 1000 |
| Operating Temperature | -10°C to 50°C |
| Storage Temperature | -40°C to 60°C |
| Humidity | 0% to 90% from 0°C to 35°C; 0% to 70% from 0°C to 50°C |
| Safety / Overvoltage Category | CSA C22.2 No. 1010.1 1992; EN 61010 Amendments 1,2 |
| Agency Approvals | CE, CSA, TÜV pending |
| Dimensions | 173 x 86 x 38 mm |
| Weight | 400 g |
| Power Supply | 3 AA batteries; typical 1000-hour life |
| Manufacturer Part Number | 3821070 |
| UPC | 0 95969 56511 0 |
| Warranty | 3 years |
Specifications are based on Fluke’s official product page and technical data sheet.
Package Contents
- Fluke 54 II B Data Logging Thermometer with Dual Input
- Impact absorbing holster
- Two 80PK-1 bead probe thermocouples
Package contents are listed on the official Fluke page and technical data sheet.
Why Choose This Product
Choose the Fluke 54 II B when your team needs a portable, rugged, dual-input contact thermometer with verified data logging capability. Compared with basic single-input thermometers, this model supports side-by-side temperature comparison and logged data review, helping maintenance teams document results more effectively during diagnostics and routine checks.
For procurement teams, the Fluke 54 II B is a strong option when standardization, accessory availability, and long-term support matter. Fluke lists compatible accessories including cases, FlukeView Forms Software with Cable, thermocouple plug kits, extension wire kits, mini-connectors, and multiple 80PK temperature probes.
For engineers and technicians, the wide thermocouple compatibility and broad temperature ranges make the instrument suitable across many electrical, mechanical, facility, and process maintenance environments. The included bead probes and impact-absorbing holster also make it ready for common field measurement tasks immediately after purchase.
Call to Action
Contact us for a quotation, availability, technical documentation, compatible probe selection, or bulk purchasing support for the Fluke 54 II B Dual Input Data Logging Thermometer.
