Measurement Computing DaqTemp User Manual
Page 40
7-2 Specifications
09-04-02
DaqTemp User’s Manual
Common Mode Rejection: 86 dB, DC to 60 Hz for gains < =8; >100 dB for gains > =16
Maximum Input Voltage:
±11V relative to analog common
Over-Voltage Protection:
±35V
Ranges: Software or sequencer selectable on a per-channel basis, from 156mV FS to 10V FS
Crosstalk: 100 dB DC to 60 Hz; 86 dB @10 kHz
Thermocouple Inputs
Channels: 7 or 14 differential TC/mV inputs
TC types: J, K, S, T, E, B R, N
Input Voltage Range: +/- 100mV
Input Impedance: 40M Ohm
Input Bandwidth: 4 Hz
Input Bias Current: 10 nA typ
CMRR: 100dB typ
Maximum Working Voltage (Signal + Common Mode): ±10V
Over Voltage Protection: +/- 40V
Voltage Accuracy: +/- (0.2% of rdg + 50uV)
TC Accuracy: See table below. Valid for one year, 18 deg C to 28 deg C.
Minimum TC resolution: 0.1 deg C for all TC types
TC Accuracy at Measurement Temperature in °C (±°C)
Type
Min
Max
-100
0
100
300
500
700
900
1100
1400
J
-200
760
0.6
0.5
0.5
0.6
0.7
0.7
—
—
—
K
-200
1200
0.7
0.6
0.6
0.7
0.8
0.8
0.9
1.0
—
T
-200
400
0.7
0.6
0.6
0.6
—
—
—
—
—
E
-270
650
0.6
0.5
0.5
0.5
0.6
—
—
—
—
S
-50
1768
—
2.3
1.8
1.5
1.5
1.4
1.5
1.6
1.6
R
-50
1768
—
2.3
1.6
1.5
1.4
1.4
1.3
1.4
1.5
B
50
1780
—
—
—
3.7
2.4
2.1
1.8
1.7
1.5
N28
-270
400
0.9
0.7
0.7
0.7
—
—
—
—
—
N14
0
1300
—
0.7
0.7
0.7
0.8
0.8
0.9
1.0
—
Accuracy conditions:
•
Data is based on the use of a calibrated DaqTemp PCI Board
•
The table reflects total system absolute accuracy, including accuracy of the CJC and DaqTemp PCI Board
•
Excludes possible error from thermocouples
•
Excludes noise
•
V
CM
= 0