Measurement-computing DBK19 Manuel d'utilisateur télécharger pdf (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 KΩ

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

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Measurement-computing DBK19 Manuel d'utilisateur Page 4