Best Temperature Calibrators of 2026

Brian Howie Avatar
Brian Howie
Last Updated: Jan 8, 2026

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

Temperature calibrators are an essential tool for any industry that relies on accurate temperature measurements. These devices are used to calibrate temperature sensors, thermometers, and other temperature measurement equipment. Temperature calibrators come in various types, including dry-block, liquid bath, and infrared calibrators. They are designed to simulate temperature conditions and provide accurate readings, ensuring that the temperature measurement devices used in the industry are functioning correctly. These calibrators are easy to use and provide a reliable and efficient way to calibrate temperature measurement equipment.

At a Glance: Our Top Picks

Extech PRC30 Multifunction Process Calibrator and Meter Cover #TOP 1
Extech PRC30 Multifunction Process Calibrator and Meter
ftb score rating icon 9.9
Triplett PCAL100 Temperature Calibrator Cover #TOP 2
Triplett PCAL100 Temperature Calibrator
ftb score rating icon 9.8
Extech PRC20 Thermocouple Calibrator Cover #TOP 3
Extech PRC20 Thermocouple Calibrator
ftb score rating icon 9.6

Top 10 Temperature Calibrators

#TOP 1

Extech PRC30 Multifunction Process Calibrator and Meter

PRC30
Green and Orange
Extech PRC30 Multifunction Process Calibrator and Meter Cover
Extech PRC30 - Multifunction Process Calibrator - Sources & Measures mA, mV, V, and Thermocouples (J, K, T, E, C, R, S, N) - 24 V Loop Power, 5 Presets, Backlit LCD, Comes with Leads

The Extech PRC30 Multifunction Process Calibrator and Meter is a temperature calibrator that features a USB port with PC software, a large LCD display with backlighting, 11 selectable units of measure, as well as max/min recording and relative time stamp. The USB port with PC software allows you to easily transfer data to your computer, while the large LCD display with backlighting makes it easy to read measurements even in low light conditions. With 11 selectable units of measure, you can easily switch between different units of temperature measurement. The max/min recording and relative time stamp features allow you to track changes over time and ensure accuracy.

What We Like
Easy data transfer with USB port and PC software
Large LCD display with backlighting for easy reading in low light conditions
11 selectable units of measure for flexibility
Max/min recording and relative time stamp for tracking changes over time and ensuring accuracy
#TOP 2

Triplett PCAL100 Temperature Calibrator

PCAL100
PCAL100
Triplett PCAL100 Temperature Calibrator Cover
Triplett PCAL100 High Precision Temperature Calibrator - Measurement and Sourcing of Temperature, Voltage, Resistance

The Triplett PCAL100 Calibrator is designed for precision in temperature measurement and sourcing. With an accuracy of up to 0.05%, you can trust that your data will be reliable, especially in critical situations. This device supports a variety of sensors, allowing you to work with 11 thermocouple types and 5 RTD types, making it versatile for different applications. It also features adjustable temperature compensation, ensuring that readings remain accurate, no matter the environment. Additionally, the multi-wire resistance measurement capability lets you conduct various resistance measurements, providing even more utility for your tasks.

What We Like
High accuracy measurements
Versatile sensor compatibility
Environmentally adaptable readings
Multiple resistance measurement options
#TOP 3

Extech PRC20 Thermocouple Calibrator

PRC20
Extech PRC20 Thermocouple Calibrator Cover
Extech PRC20 Thermocouple Calibrator and Meter

The Extech PRC20 Calibrator is a versatile tool that supports eight types of thermocouples, including J, K, and T. Its compact design makes it easy to handle, and the large backlit display ensures that you can read measurements clearly, even in low light. This device offers high-accuracy calibration, simulating precision thermocouples for reliable results. Additionally, it features a non-contact AC voltage detector, allowing you to check voltage without direct contact, enhancing safety and convenience during use. Overall, this calibrator is designed to meet your temperature measurement needs efficiently.

What We Like
Supports multiple thermocouple types
Compact and portable design
High accuracy calibration
Non-contact voltage detection
#TOP 4

Fluke 712B Temperature Calibrator

4387857
Fluke 712B Temperature Calibrator Cover
Fluke-712B RTD Temperature Calibrator, Yellow/Brown/Black/Red

The Fluke 712B Calibrator is a versatile tool designed to measure and simulate 13 different types of RTD sensors and their resistance. This feature allows you to test various temperature sensors effectively. Additionally, it can measure 4 to 20 mA signals while sourcing a temperature signal simultaneously, which is great for ensuring accuracy in your measurements. The included hanging tool makes it easy to use in various settings. Plus, with configurable source settings at 0% and 100%, you can quickly conduct linearity checks, ensuring your equipment performs optimally.

What We Like
Multi-type RTD measurement
Simultaneous signal sourcing
Convenient hanging tool
Quick linearity checks
#TOP 5

INSTRUKART AI-DBC-01 Dry Block Temperature Calibrator

HZ-SWUB-RE4V
INSTRUKART AI-DBC-01 Dry Block Temperature Calibrator Cover
Dry Block Temperature Calibrator (Range: Ambient to 350°C) with Thermocouples (T, J, K, N, R, S) for Calibration Labs, Pharmaceutical Divisions, Thermal Plants, Metallurgical Plants Model: AI-DBC-01

The INSTRUKART Dry Block Calibrator offers a temperature range from 50°C up to 350°C, allowing you to work with a wide variety of calibration tasks. Its clear graphical display with LED backlighting makes it easy to read measurements even in low light conditions, helping you avoid errors. The device maintains temperature stability within ±0.2°C, ensuring precise and reliable results for your calibration needs. Additionally, the calibrator supports multiple thermocouple types (J, K, T, R, S, N) and other measurements like mA, mV, volts, and ohms, giving you flexibility for different instruments and sensors. This makes the INSTRUKART Dry Block Calibrator a convenient and versatile tool for labs and industrial settings.

What We Like
Wide temperature range
Clear graphical LED display
High temperature stability
Multiple thermocouple support
#TOP 6

Ace Instruments AI-DBC-02 Dry Block Calibrator

IK-Hold-AI-DBC350
Ace Instruments AI-DBC-02 Dry Block Calibrator Cover
Dry Block High Temperature Calibrators (Range: 50 to 650°C) with Thermocouples (T, J, K, N, R, S) for Calibration Labs, Thermal Plants, Metallurgical Plants Model: AI-DBC-02

The Ace AI-DBC-02 Calibrator is a reliable dry block temperature calibrator designed for precision and ease of use. It covers a wide temperature range from 50 to 650°C, allowing you to calibrate various sensors and devices within this scale. The device offers excellent accuracy with a margin of ±0.6°C, ensuring your measurements are trustworthy. Stability is another key feature, with the temperature holding steady within ±0.05°C, so your results won't fluctuate during testing. The calibrator also heats up efficiently, reaching the desired temperature in about 30 minutes, saving you time during your calibration tasks. Its clear digital display and easy keypad control make setting and monitoring temperatures straightforward and user-friendly.

What We Like
Wide temperature range
High accuracy
Excellent temperature stability
Fast heating time
User-friendly digital control
#TOP 7

Fluke 724 Temp Calibrator

Yellow
267.2 cubic inches
Fluke 724 Temp Calibrator Cover
Fluke 724 Temperature Calibrator

The Fluke 724 Temperature Calibrator is a versatile tool for testing and calibrating sensors and transmitters. It features an easy-to-read dual display that allows you to view input and output values simultaneously. With the ability to measure RTDs, thermocouples, ohms, and volts, you can quickly and accurately test sensors and transmitters. The calibrator also allows you to source/simulate thermocouples, RTDs, volts, and ohms, providing the ability to calibrate transmitters. Additionally, it features a loop power supply with simultaneous mA measurement to power transmitters during testing. The Fluke 724 Temperature Calibrator can perform fast linearity tests with 25% and 100% steps and execute remote tests with auto step and auto ramp.

What We Like
Easy-to-read dual display
Versatile measurement and sourcing capabilities
Loop power supply with simultaneous mA measurement
Fast linearity tests with 25% and 100% steps
Remote testing with auto step and auto ramp
#TOP 8

REED Instruments BX-500 Infrared Temperature Calibrator

REED Instruments BX-500 Infrared Temperature Calibrator Cover
REED Instruments BX-500 Infrared Temperature Calibrator, 932°F (500°C)

The REED Instruments BX-500 Infrared Temperature Calibrator is designed for calibrating non-contact infrared thermometers and thermal imagers up to 932°F (500°C). It features a temperature controlled black-body target and wide field of view to compensate for optical variations. Users can simply set the desired temperature in increments of 0.1 degree. The package includes a power cord and user manual.

What We Like
Easy to use
Wide field of view to compensate for optical variations
Can calibrate non-contact infrared thermometers and thermal imagers
#TOP 9

Dry Block Calibrator AI-DBC-02

Dry Block Calibrator AI-DBC-02 Cover
Dry Block High Temperature Calibrators (Range: 50 to 650°C) with Thermocouples (T, J, K, N, R, S) for Calibration Labs,Thermal Plants, Metallurgical Plants Model: AI-DBC-02

The Ace Instruments Calibrator is designed for precise temperature measurements, with a range from 50 to 650°C. You will appreciate its accuracy of ±0.6°C, ensuring reliable results for your calibration needs. The stabilizing feature, which achieves a stability of ±0.05°C within 20 minutes, allows you to quickly get your equipment ready for testing. With a rapid heating time of just 30 to 32 minutes, you can minimize downtime in your calibration labs or industrial settings. The easy-to-read graphical display with LED backlight enhances visibility, making it user-friendly even in low-light environments.

What We Like
Wide temperature range
High accuracy and stability
Fast heating time
User-friendly display
#TOP 10

HKNDT VA702 Volt/mA Thermocouple Calibrator

VA702
Yellow & Black
HKNDT VA702 Volt/mA Thermocouple Calibrator Cover
VA702 Volt mA Thermocouple Loop Process Calibrator 0-20V, 4-20mA, V/mA and Temperature Meter for Transmitters, Current Loops, and PLC

The HKNDT VA702 Calibrator is a versatile tool designed to help you measure and output current, voltage, and temperature through thermocouples. Its easy-to-use numeric keypad lets you quickly enter values, making your work more efficient and less prone to errors. The device offers both Scan Mode and Programming Mode, allowing you to switch between real-time monitoring and setting up specific parameters with ease. Additionally, you can save and recall up to 10 different settings, which is perfect for repetitive tasks or when working with multiple devices. This makes the VA702 a convenient and reliable choice for managing transmitters, current loops, and PLC systems.

What We Like
Multi-function measurement
Numeric keypad input
Scan and programming modes
Save and recall settings
Buying Guide Image

Frequently Asked Questions (FAQs)

1. How does a temperature calibrator work?

A temperature calibrator typically consists of a heat source and/or cooling that can be controlled to reach the desired temperature. The temperature sensor to be calibrated and a reference sensor are inserted into the calibrator's heat source. The readings from both sensors are compared at different temperatures to ensure accurate calibration.

2. How do you calibrate a temperature?

To calibrate a temperature, place the thermometer stem or probe into ice water, ensuring the sensing area is submerged. Wait for 30 seconds or until the reading stabilizes. Adjust the thermometer to read 32˚F (0˚C) to match the known temperature of ice water.

3. Which equipment is used for temperature calibration?

Temperature calibration laboratories use equipment such as stirred liquid baths, comparison furnaces, measuring equipment, and accessories. Ideally, they have ITS-90 fixed points, including a Water Triple Point Cell. This equipment covers different temperature ranges and categories to ensure accurate calibration.

4. What are calibrators used for?

Calibrators are devices used to generate or simulate fixed values for specific physical parameters. They are used to check the accuracy of measuring devices or adjust devices and systems to a certain load or signal size.

5. What are the 2 ways to accurately calibrate a thermometer?

There are two common methods to accurately calibrate a thermometer: the ice water method and the boiling point method. The ice water method is more commonly used, unless ice is unavailable. However, note that most digital stem thermometers cannot be calibrated and must be sent back to the manufacturer for calibration.

6. What are the different types of temperature calibration?

There are three common methods for calibrating temperature sensors. The first method involves calibrating only the electronics using a simulator. The second method calibrates both the electronics and the sensor in a dry-well. The third method calibrates both the electronics and the sensor in a dry-well using a reference thermometer.

Editor's Notes

During our temperature calibrator research, we found 24 temperature calibrator products and shortlisted 10 quality products. We collected and analyzed 2,622 customer reviews through our big data system to write the temperature calibrators list. We found that most customers choose temperature calibrators with an average price of $1,014.92.

The temperature calibrators are available for purchase. We have researched hundreds of brands and picked the top brands of temperature calibrators, including Extech, Triplett, Fluke, INSTRUKART, Ace Instruments. The seller of top 1 product has received honest feedback from 384 consumers with an average rating of 4.7.

Written by
Brian Howie Avatar

Brian Howie is a content writer and senior industrial designer. After graduation from Westminster College, he has been engaged in product design and manufacturing for 18 years. Brian Howie has always found great pleasure in designing industrial products and sharing his ideas and experience online.