Measurement Computing DBK Part 2 - Manual (Page 176)

pg. 2, DBK90 907492 DBK Option Cards and Modules
Overview
The DBK90 is used in temperature measurement applications and provides connections for 56
thermocouples through convenient mini-TC connectors.
The DBK90 features on-board cold junction compensation (CJC) for direct measurement of type
J, K, T, E, N28, N14, S, R, and B thermocouples. The following table provides the temperature
range for each of these thermocouple types.
Thermocouple Temperature Ranges
T/C Type J K T E N28 N14 S R B
Temperature
Range °C
-200 to
760 -200 to
1200 -200 to
400 -270 to
650 -270 to
400 0 to
1300 -50 to
1768 -50 to
1768 50 to
1780
Temperature
Range °F
-328 to
1400 -328 to
2192 -328 to
752 -454 to
1202 -454 to
752 32 to
2372 -58 to
3214 -58 to
3214 122 to
3236
Note: There are four CJCs on the DBK90, one per row of thermocouple connectors.
Up to sixteen DBK90 modules can be attached to a single DaqBook/2000 Series device, WBK40, or
WBK41. Using Sixteen DBK90 modules provides up to 896 temperature channels.
DBK90 Block Diagram
In comparison to typical DBK options, the DBK90 demands significant power from the
system’s
±15 V power supplies. It is important that you calculate your system’s power
demand, as you may need to add auxiliary power supplies. For additional information
refer to Power Requirements in the DBK Basics section.