Rockwell-automation 1797-OE8H FLEX Ex HART Analog Modules User Manual Bedienungsanleitung Seite 97

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Publication 1797-6.5.3 - March 2006
Calibrate Your Module 5-21
1797-OE8H Calibration Flowchart Procedure
Perform the calibration at ambient room temperature, 25 (±5) °C, according
to the procedure flowchart. Each channel is calibrated one after the other. The
current is measured indirectly via a precision voltmeter placed across a
precision 100 ohm resistor.
Before all values are completely calibrated, a calibration error is displayed
within the Real Time Data field in the diagnostic status field. After calibration
is complete, the I/O module stores the calibrated values in the RAM area.
Therefore, you must send a store command to cause the I/O module to
transfer the RAM content to the EEPROM.
+-CHx
100 ohm 650 ohm
Voltmeter
Voltmeter
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