K400 Issue No. 1 9
Calibration with external reference probe
The temperature value to be considered as standard is measured with an external
and certified reference probe. This measurement reading can be directly shown
either on the DBC display (connecting the reference probe to the REF RTD socket
on the top of the instrument) or with an external, certified electronic calibrato r.
Unit under Test
External Certified
Reference Probe
Internal Temperature
Probe
Dry Wel
l