The Jofra D40 is a Portable Dry Well Temperature Calibrator.The D40 size and portability make it perfect for lab or on-site service, wherever temperature sensors are located; ships, chemical industries, power plants, etc.

Jofra D40 Lab Notes:
This dry well has been tested in our lab and performs as described below:
Heating

From ambient (25C) to 123C
Cooling

Cooling to 0C at ambient of 25C

Cooling to -12C at ambient of 10C

Cooling to -25C at ambient of -10C