Agilent-technologies U2802A Manual do Utilizador descarregar pdf (Página 58)

4 Product Specifications

48 Agilent U2802A 31-Channel Thermocouple Input User’s Guide

Therefore,

E

THERMOCOUPLE

= 0.75% × 600 °C = 4.5 °C

Using the above individual component errors, the total measurement

system accuracy is calculated as below.

System accuracy without thermocouple sensor error:

E

TOTAL

= SQRT(E

DAQ

2

+ E

SIG_COND

2

+ E

ZEROING

2

+ E

CJC

2

)

= 0.95 °C

System accuracy with thermocouple sensor error:

E

TOTAL

= SQRT(E

DAQ

2

+ E

SIG_COND

2

+ E

ZEROING

2

+ E

CJC

2

+ E

THERMOCOUPLE

2

)

= 4.6 °C

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