Whether you're simulating thermocouples or calibrating thermocouples directly through comparison methods, Fluke offers the most comprehensive selection of quality thermocouple calibrators on the market, including thermocouple simulators, handheld multifunction calibrators, temperature sources such as dry-block calibrators and liquid baths, thermocouple reference Standards, and thermocouple readouts.
Thermocouple calibration product catagories include:
- Handheld thermocouple calibrators and simulators
- Comparison calibration instruments
Handheld Thermocouple Calibrators and Simulators
These handheld products are used for calibration of thermocouple indicators and thermocouple measurement devices such as temperature transmitters.
| Model | Range | Thermocouple Type | Description/Features |
| 754 Documenting Process Calibrator-HART | -250 to 2500 °C | E, N, J, K, T, B, R, S, C, L, U, BP, XK | Documenting calibrator with HART, TC and RTD temperature calibrator, with loop power, source/measure TC and measures mA |
| 7526A Precision Process Calibrator | –250 °C to 1767 °C | B, C, E, J, K, L, N, R, S, T, U, XK, BP | Offers the best balance of economy and accuracy for benchtop calibration of temperature and pressure process instrumentation |
| 726 Precision Multifunction Calibrator | -200 to 1800 °C | J, K, T, E, L, N, U, C, BP, XK, B, R, S | Multifunction calibrator (twice as accurate as 725) |
| 725 Multifunction Process Calibrator | -200 to 1800 °C | J, K, T, E, R, S, B, L, U, N | Multifunction calibrator, TC and RTD temperature calibrator, with loop power, source/measure TC and measures mA |
| 724 Temperature Calibrator | –200 to 1800 °C | J, K, T, E, R, S, B, L, U | TC and RTD temperature calibrator, with loop power, source/measure TC and measures mA |
| 714B Thermocouple Calibrator | -250 to 1410 °C | E, N, J, K, T, B, R, S, C, L, U, BP, XK, G, D, P, M | Thermocouple (TC) temperature calibrator, source/measure TC and measures mA |
Comparison Calibration Instruments
Calibration of a thermocouple by comparison methods requires:
- Reference thermometer
- Thermometer readout
- Stable and uniform temperature source
Fluke offers a wide range of products to fit your temperature range, accuracy, and budget requirements.
Reference Thermometers
| Model | Range | Accuracy | Description/Features |
| 5649/5650 Type R and Type S Thermocouple Standards | 0 °C to 1450 °C | greater of ±0.6°C or ±0.1% of reading | Eight models to fit any ype R or S thermocouple application |
| 5624 Platinum Resistance Thermometer to 1000 °C | 0 °C to 1000 °C | ± 0.006 °C at 0 °C ± 0.031 °C at 660 °C ± 0.041 °C at 961 °C | World’s finest high-temperature secondary PRT |
| 5628 High-Temperature Secondary Standard | –200 °C to 661 °C | ± 0.006 °C at –200 °C ± 0.006 °C at 0 °C ± 0.015 °C at 420 °C ± 0.022 °C at 661 °C | Fills the gap between affordable, but temperature-limited secondary PRTs and more expensive, highly accurate SPRTs |
| 5609 Secondary Reference PRT | –200 °C to 670 °C | ± 0.007 °C at –200 °C ± 0.008 °C at 0 °C ± 0.020 °C at 420 °C ± 0.027 °C at 660 °C | Very stable thermometer |
Thermometer Readouts
| Model | Range | Accuracy | Description |
| 1586A Super-DAQ Precision Temperature Scanner | -15 mV to 100 mV | 0.004 % + 4 µV | Most accurate and flexible temperature data acquisition system on the market |
| 1560 Black Stack Thermometer Readout | -10 to 100 mV | ± 0.002 mV | Accurate, expandable and configurable readout |
| 1529 Chub-E4 Standards Thermometer | -10 mV to 100 mV | ± 0.005 mV | Lab-quality accuracy on four channels |
| 1523/1524 Handheld Reference Thermometers | 0 Ω to 400 Ω ± (0.004 % + 0.002 Ω) 200 Ω to 50 kΩ± (0.01 % + 0.5 Ω) 50 kΩ to 500 kΩ± (0.03 %) | Measure, graph and record three sensor types with one tool | |
Thermocouple Calibration Furnaces
| Model | Range | Stability | Description/Features |
| 9118A Thermocouple Calibration Furnace | 300 °C to 1200 °C | ± 0.2 °C (without block), ± 0.1 °C (with block) | Horizontal thermocouple furnace. Flexible configuration for calibrating thermocouple bundles, spools, and sheathed thermocouples. |
| 9150 Portable Thermocouple Furnace | 150 °C to 1200 °C 302 °F to 2192 °F | ±0.5 °C | Benchtop thermocouple furnace. Interchangeable insert sleeves. Fast heating and cooling. |
Dry-Block Calibrators
| Model | Range | Accuracy | Description/Features |
| 9142 Field Metrology Well | –25 °C to 150 °C | ± 0.2 °C | Light-weight portable and fast Reads and documents °C, mV, W, and 4-20 mA 24 volt loop power Includes accredited certificate of calibration |
| 9143 Field Metrology Well | 33 °C to 350 °C | ± 0.2 °C | |
| 9144 Field Metrology Well | 50 °C to 660 °C | ± 0.35 °C at 50 °C ± 0.35 °C at 420 °C ± 0.5 °C at 660 °C | |
| 9190A Field Metrology Well | –95 °C to 140 °C | Accuracy: ± 0.2 °C | Horizontal thermocouple furnace. Flexible configuration for calibrating thermocouple bundles, spools, and sheathed thermocouples. |
Liquid Baths
| Model | Range | Stability | Depth | Description/Features |
| 6109A Portable Calibration Bath | 35 °C to 250 °C | 0.015 °C | 400 mm (15.7 in) | Four times more calibration throughput and twice the accuracy of Micro-Baths and dry-block calibrators |
| 7109A Portable Calibration Bath | –25 °C to 140 °C (–15 °C cover off) | 0.01 °C | 400 mm (15.7 in) | Four times more calibration throughput and twice the accuracy of Micro-Baths and dry-block calibrators |
| 6330 Compact Temperature Calibration Bath | 35 °C to 300 °C | ±0.005 °C at 100 °C ±0.015 °C at 300 °C | 234 mm (9.25 in) | Small benchtop footprint. Optional cart includes storage space. High temperature bath |
| 7320 Temperature Calibration Bath | –20 °C to 150 °C | ±0.005 °C at –20 °C ±0.005 °C at 25 °C | 234 mm (9.25 in) | Small 9.2-liter (2.4-gallon) tank. Uniformity ±0.005 °C. |
| 7340 Compact Temperature Calibration Bath | –40 °C to 150 °C | ±0.005 °C at –40 °C ±0.005 °C at 25 °C | 234 mm (9.25 in) | Low temperature calibrations. Metrology-level performance. |
| 7380 Compact Temperature Calibration Bath | –80 °C to 100 °C | ±0.006 °C at –80 °C ±0.010 °C at 0 °C | 178 mm (7 in) | Achieves –80 °C in less than 130 minutes. Quiet operation. |
| 6331 Deep-Well Compact Bath | 40 °C to 300 °C | ±0.007 °C at 100 °C ±0.015 °C at 300 °C | 457 mm (18 in ) | 18 in of depth with just 16 liters of fluid. RS-232 included. |
| 7321 Deep-Well Compact Bath | –20 °C to 150 °C | ±0.005 °C at –20 °C ±0.005 °C at 25 °C | 457 mm (18 in) | Perfect for LIG thermometers with optional kit. Quiet operation. |
| 7341 Deep-Well Compact Bath | –45 °C to 150 °C | ±0.005 °C at –40 °C ±0.005 °C at 25 °C | 457 mm (18 in) | Fast temperature changes. Access opening accommodates many thermometers. |
| 7381 Deep-Well Compact Bath | –80 °C to 110 °C | ±0.006 °C at –80 °C ±0.005 °C at 0 °C | 457 mm (18 in) | Stability of ±0.006 °C or better over full range. Compatible with MET/TEMP II software. Low temperature bath |
Calibration Bath Accessories
| Bath Accessories | Stands, rods, and clamps to suspend and support your probes and thermometers |
| Bath Fluids | Silicone oils, salt, and cold fluids in convenient, small quantities. |
Related Selection Guides
- Thermometer Probe Selection Guide
- Thermometer Readout Selection Guide
- Probe-to-Readout Adapter Guide
- Data Acquisition System Selection Guide
Get help
If you are interested in learning more about how to calib rate a thermocouple, see the Fluke Calibration Thermocouple Application Note Series or register for the Fluke Calibration Practical Temperature Calibration course.
Need help selecting a thermocouple calibrator? Speak with one of our thermocouple calibrator equipment experts.