Advantech RS-485 Uživatelský manuál stáhnout pdf (Strana 60)

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4-20 ADAM-5000

I/O Modules

6. Only for ADAM-5018: Execute the CJC (cold junction sensor)

Calibration command. This can be done with the ADAM utility

software. (See the “CJC Calibration” option in the Calibration

submenu of the ADAM utility software.)

Figure 4-17: Cold junction calibration

* Note: Zero calibration and span calibration must be com-

pleted before CJC calibration. To calibrate CJC, the

thermocouple attached to ADAM-5018 and a stan-

dard thermometer should be used to measure a

standard known temperature, such as the freezing

point of pure water. The amount of offset between the

ADAM-5018 and the standard thermometer is then

used in the ADAM utility to complete CJC calibration.

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