CI547 CI570 3BSE001440R1 ABB Analog module processor

CI547 CI570 3BSE001440R1 ABB Analog module processor

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The GC module is comprised of three parts: columns, chromatographic valve and

GC module circuit board. The valve controls the flow of gas within the system. The

columns perform the separation of the gas into component parts for analysis. The

GC module circuit board contains the sensors for the carrier pressure regulators,

the sample pressure sensor and the thermal conductivity detectors (TCD's) which

detect the different gas components as they leave the GC columns. It also

contains an EEPROM or FLASH memory for storage of calibration and

characterization information of the module and its sensors.

Figure 1—10 shows the GC module with the oven wall removed. 

The analytical processor board provides real-time system control and

measurement of the analytical processes within the NGC. It does this by

interfacing with all of the sensors in the GC module (and optional feed-through

temperature sensor) as well as controlling the carrier pressure regulator valves,

sample stream valves, the pilot valve and the heaters. The data generated by the

analytical processor is passed to the digital controller board via a high speed serial

interface.

The analytical processor also has two status LED's used for troubleshooting. The

red LED indicates that the board is powered on. If the board is remotely powered

down by the digital controller, or has no power, this LED is off. The yellow LED

indicates that the analytical processor's CPU has booted its program successfully

and is controlling its processes as directed by the digital controller. This LED

should be flashing at a high speed (between 20-40Hz). If this LED is off or is on

solid with no flashing, then the software in the analytical processor is not running

properly.

Figure 1—12 shows the analytical processor assembly.