Instruction manual

NGA 2000 MLT Hardware
TROUBLESHOOTING
10 - 4
Emerson Process Management GmbH & Co. OHG
Instruction Manual
90002929
07/2006
10.3.3 Detector signal communication failed
Possible Causes Check / Correct
a) Failure in signal processing: Check connection to PCB “PIC” Fig. 1-32) or
Detector failure PCB “DSP” Fig. 1-33) resp.;
See Section 11.1.4 (IR/UV measurement),
Section 11.1.6 (O
2
measurement).
b) Contamination of the gas paths Check if photometric components are dirty,
clean or replace the components if necessary
(cf. Section 17.).
Check and adjust physical zero point alignment
( see Section 17.5 / 11.1.6)
10.3.4 Light source
Possible Causes Check / Correct
a) Failure in signal processing: Check connection to PCB “PIC” Fig. 1-32) or
Light source failure PCB “DSP” Fig. 1-33) resp.;
See Section 11.1.2
10.3.5 Detector
Possible Causes Check / Correct
a) Failure in signal processing: Check connection to PCB “PIC” Fig. 1-32) or
Detector failure PCB “DSP” Fig. 1-33) resp.;
See Section 11.1.4
b) Contamination of the gas paths Check if photometric components are dirty,
clean or replace the components if necessary
(cf. Section 17.).
Check and adjust physical zero point alignment
(see Section 11.1.6)
DISPLAY MESSAGES