Software setup, Dbk52 - specifications – Measurement Computing DBK52 User Manual
Page 4
Software Setup
Reference Notes:
o
DaqView users - Refer to Chapter 3, DBK Setup in DaqView.
o
LogView users - Refer to Chapter 4, DBK Setup in LogView.
o
DBK52 Calibration Disk – Each DBK52 card is shipped with a calibration disk with constants
used to correct gain and offset errors inherent in the hardware. This calibration is done
automatically by DaqView and LogView. Refer to the readme.txt file on the disk.
DaqView Users: When DBK52 is used with /2000 Series Devices, the Internal Clock Speed should be
set to 100 kHz as described in Chapter 4, DBK Setup in DaqView.
The DBK52 selection allows the user to define the thermocouple types by using the Type column of the
analog input spreadsheet.
Each DBK52 card is shipped with a calibration disk with constants used to correct gain and offset errors
inherent in the hardware. This gain and offset calibration is done automatically by DaqView and
LogView. See the DBK52 readme.txt file on the disk shipped with the board for details on creating this
file.
DBK52 - Specifications
Name/Function: Thermocouple Input Module
Connectors:
DB37 male, mates with P1.
Thermocouples attach directly to on-board jacks.
Thermocouple Types: J, K, S, T, E, B, R, N
Gain Ranges: ×60, ×90, ×180, ×240
Inputs:
14 differential thermocouples
1 cold-junction compensation
1 auto zero
Cold Junction Sensor Output: 100 mV/°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
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
DBK52, pg. 4
989594
DBK Option Cards and Modules