Dry Block Calibrators

Dry block calibrators are portable temperature calibration instruments that use a heated or cooled metal insert — the "dry block" — to achieve a precise, stable temperature for calibrating contact temperature sensors such as thermocouples, RTDs, and thermistors. Unlike calibration baths, dry blocks use no liquid medium, making them ideal for field use, on-site calibration, and environments where liquid spills present a safety or contamination hazard.

These instruments span a wide temperature range — from deep cold to high-temperature industrial process conditions — and are valued for their portability, rapid stabilization, and ease of use. Dry block calibrators are a staple tool in process industries, manufacturing plants, and field calibration services where instruments must be verified without removing them from service.

Typical Applications

On-site calibration of temperature transmitters, thermowells, and probe sensors in oil & gas and chemical plants
Verification of food-safe thermometers in food processing and HACCP compliance workflows
Field calibration of industrial RTDs and thermocouples in power generation and utilities
Portable temperature reference for maintenance technicians in manufacturing environments
Laboratory characterization of temperature sensors across wide temperature ranges

Popular Brands

Fluke Calibration offers a comprehensive range of dry block calibrators known for accuracy and reliability in field environments. AMETEK JOFRA specializes in precision portable calibrators for demanding industrial and metrology applications. Techne produces compact bench-top and portable dry block solutions for laboratory and light industrial use.