M&C TechGroup PMA 100-L Operator's manual - Manual (Page 29)

9-3.12.1-ME M&C Products Analysentechnik GmbH
- 29 -
Fault description Display Solution
Measuring cell doesn‘t work E:01 resp. F:01, depending on Give air resp. nitrogen to the analyser
properly at 100 Vol.-% the language and restart the analyser
(suppressed measuring
range 99-100 Vol.-%)
Calibration fault:span gas is Measuring value always 0 Vol.-%; Start new calibration (first calibration is
switched off while proceed- no fault message on the display a ‘blind’ calibration; the displayed value
ing the calibration of the calibration is registered in the is always 0 Vol.-%); after this start
span. calibration log-book with another calibration under ‘normal’ con-
exeeded calibration limits ditions.
(e.g. 104%).
Calibration limits of the A/D- Check the limits (see below) testing the
converter exeeded. converter channel (see menu);
When limits are exeeded a calibration at
the manufacturer has to be carried out.
18.Trouble shooting
Limits testing the converter channel (see menu):
Checking the zero point with nitrogen N
2
U
min
[V] U
max
[V]
0,005 0,147
Checking the span with ambient air (20,93 Vol.-%) at
normal pressure and different voltages of the zero point:
Zero point [V] U
min
[V] U
max
[V]
0,005 0,306 0,344
0,078 0,370 0,398
0,147 0,430 0,457
Checking the span with 100 Vol.-% oxygen O
2
at normal
pressure and different voltages of the zero point:
Zero point [V] U
min
[V] U
max
[V]
0,005 1,440 1,580
0,078 1,470 1,610
0,147 1,500 1,630