CHAPTER 2, INSTALLATION AND OPERATION
98307600 Rev. C-1 2-37
CHASSIS TEMP.
Temperature of air inside the chassis, measured on the microprocessor board.
FLOW TEMP.
Temperature of the flow control/ pressure board.
COOLER TEMP.
Voltage drop sensed across the thermoelectric cooler. Measured as a voltage.
MIRROR TEMP.
Temperature of the end-cap mirror plate on the reaction cell.
Additional information on the SYSTEM TEMPERATURES screen is provided in the
EC9830 Service Manual.
2.5.21 System Faults Screen
SYSTEM FAULTS
CELL TEMPERATURE START
SAMPLE GAS FLOW: PASS
FLOW BLOCK TEMP: PASS
A/D INPUT: PASS
12 VOLT SUPPLY: PASS
REFERENCE VOLTAGE: PASS
CONVERTER TEMP: PASS
COOLER & IR SOURCE: PASS
CHOPPER WHEEL: PASS
MIRROR TEMP: PASS
Figure 2-28. System Faults Screen
The SYSTEM FAULTS display provides a start, pass or fail indication for various
parameters which are continually monitored. These parameters must be within
acceptable operating ranges in order to display PASS. If the instrument is in startup
mode, START will be displayed. For further information on the SYSTEM FAULTS
screen, refer to the EC9830 Service Manual.
2.6 Analog Output
Analog output connections are described in section 2.1.2.1.
Before setting up the recorder and DAS analog outputs, decide what offset and
over-ranging choices to make. A brief explanation of these terms follows, then the
setup procedure is given. The analog output and over-range settings have no
impact on the measurement range of the analyzer, but only affect the analog
output scaling.
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