Advantech 4718 User Manual download pdf (Page 40)

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

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 53 54

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Advantech 4718 User Manual Page 40