Dry-block calibrators are stable temperature sources for calibrating sensors such as dial thermometers, resistance temperature detectors (RTDs) and thermocouples.These sensors are used for process manufacturing in many industries.They need to be checked or calibrated periodically. Watch the How to Calibrate a Digital Thermometer with a Dry Block video for an example.

Since dry blocks are portable, fast, and clean (do not use fluids), they are popular for on-site sensor calibration in process manufacturing.  If you are considering a purchase of a dry block, you should first answer three questions: 

1. What type and size are the temperature sensors that need to be calibrated?

2. What temperature range is needed for sensor calibration?

3. What calibration accuracy is required?