Measurement Computing DBK19 - Manual (Page 2)

Note: LogView and DaqView software includes functions for the conversion and linearization of
thermocouple readings into temperature data.
Programmers using Daq devices should refer to related sections in the Programmer’s Manual.
Hardware Setup
Card Connection
Connect the T/C input wires to the intended input terminals. The DBK19 uses screw terminals to connect
different types of thermocouples as well as several analog ground access points. Connections are provided
for 14 thermocouples.
Thermocouples have polarities that must be observed. Thermocouple types J, K, T, E, N28, N14, S, R and
B can be connected to DBK19 channels CH2 through CH15.
• CH0 is reserved for the cold-junction compensation sensor (factory installed).
• CH1 is permanently shorted to common to allow software-driven auto-zero to compensate for
temperature drift.
Thermocouple wire is standardized and color-coded as shown in the table. T/Cs have a very small output.
Long T/C leads can pickup lots of noise. Use shielding as needed, and average several readings in
software to minimize noise effects.
After all connections are in place, secure wires to captive areas (pre-drilled holes) at the rear edge of the
board. Nylon tie wraps (not included) work well for this purpose.
T/C
Type
(+) Lead to
Channel-Hi
(-) Lead to
Channel-Lo
J White Red
K Yellow Red
T Blue Red
E Violet Red
N28 Orange Red
N14 Orange Red
S Black Red
R Black Red
B Gray Red
DBK19, pg. 2 879795 DBK Option Cards and Modules