USB-4718 User’s Manual
34
Appendix A Specifications
A.1 Analog Input
A.2 Accuracy for Thermocouple:
NOTE:
Due to the location of the CJC sensor, the measurement will have
a 1°C max. difference in channels.
Table A.1: Analog Input
Channels
8 differential
Input type
mV, V, and mA
Input range
J, K, T, E, R, S and B Thermocouple
Uni-polar
0~15mV, 0~50mV, 0~100mV,
0~500mV, 0~1V, 0~2.5V, 0~20mA,
4~20mA
Sampling rate
10 samples/s(total)
Accuracy
±0.1% or better
(voltage and current input)
Zero drift
±0.3 uV / °C
Span drift
±25 ppm / °C
CMR @ 50/60 Hz
92 dB
Input impedance
1.8 M
Table A.2: Accuracy for Thermocouple
Input Range
Typical Accuracy
Maximum Error
J thermocouple 0 to 760 °C
±1.0 °C
±1.5 °C
K thermocouple 0 to 1370 °C
±1.0 °C
±1.5 °C
T thermocouple -100 to 400 °C
±1.0 °C
±1.5 °C
E thermocouple 0 to 1000 °C
±1.0 °C
±1.5 °C
R thermocouple 500 to 1750 °C
±1.2 °C
±2.5 °C
S thermocouple 500 to 1750 °C
±1.2 °C
±2.5 °C
B thermocouple 500 to 1800 °C
±2.0 °C
±3.0 °C
Summary of Contents for USB-4718
Page 1: ...USB 4718 8 Channel Thermocouple Input Module User Manual...
Page 10: ...USB 4718 User Manual 4 Figure 1 1 Installation Flow Chart...
Page 14: ...USB 4718 User Manual 8...
Page 31: ...25 Chapter3 Figure 3 1 I O Connector Pin Assignment...
Page 39: ...2 APPENDIX A Specifications...
Page 43: ...2 APPENDIX B Function Block...
Page 44: ...USB 4718 User Manual 38 Appendix B Function Block...
Page 45: ...2 APPENDIX C Firmware Download Utility...