The principle of a dry block calibrator is basically very simple: 
'Heating up a metal block and keeping the temperature stable.' This basic design gives the user a lot of advantages compared to the more traditional liquid baths.

- Heating up and cooling down much faster 
- Much wider temperature ranges 
- Physically smaller and lighter 
- Designed for industrial applications 
- Models with completely integrated calibration solutions

Picture:
1. Sensor-under-test
2. Solid metal block (dry block)
3. Interchangeable inserts for the sensor-under-test
4. Internal RTD reference sensor
5. Heating elements
6. Cooling fan