Measurement Computing DBK19 - Manual (Page 4)

DBK19, pg. 4 879795 DBK Option Cards and Modules
DBK19 - Specifications
Name/Function: High-Accuracy Thermocouple Card
Connector: DB37 male mates with P1 pinouts. Thermocouples attach to on-board screw terminals.
Thermocouple Types: J, K, S, T, E, B, R, N
Gain Ranges: ×60, ×90, ×180, ×240
7Inputs:
14 differential thermocouples
1 cold-junction compensation
1 auto zero
Cold Junction Sensor Output: 100mV/°C
Voltage Ranges Gains:
0 to 80 mV @ ×60
0 to 50 mV @ ×90
0 to 25 mV @ ×180
0 to 20 mV @ ×240
0 to ±10 mVDC
Input Impedance: 20 K Ω
Input RC Filter: -3 dB Frequency: 15.9 kHz
Gain Accuracy:
Uncalibrated:
0.15%
Calibrated: 0.02%
Maximum Input Voltage: 35 VDC
CMRR (Input Stage): 110 dB type DC to 60 Hz
Offset: Software compensated
Thermocouple Type/Range/Accuracy/Resolution: refer to the following table
Thermocouple Reference
Range Accuracy Resolution
Type Min Max (<0°C) (>0°C) 12-bit <0°C 12-bit >0°C 16-bit <0°C 16-bit >0°C
J -200°C 760°C 0.6°C 0.6°C 1.2°C 0.5°C 0.1°C 0.1°C
K -200°C 1260°C 1.6°C 1.0°C 1.1°C 0.8°C 0.1°C 0.1°C
T -200°C 400°C 1.4°C 0.8°C 0.8°C 0.3°C 0.1°C 0.1°C
E -270°C 1000°C 1.4°C 0.9°C 1.6°C 0.7°C 0.1°C 0.1°C
N28 -270°C 400°C 0.8°C 0.8°C 1.0°C 1.0°C 0.1°C 0.1°C
N14 0°C 1300°C — 1.0°C — 5.0°C — 5.0°C
S 0°C 1780°C — 1.6°C — 1.3°C — 0.1°C
R 0°C 1780°C — 1.6°C — 1.7°C — 0.1°C
B 0°C 1820°C — 1.8°C — 1.5°C — 0.1°C