Lamtec LT2, Руководство по сборке и пусконаладке

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4 Technical Description
34
4.10 RS 232 interface
Device address 1
9600 bauds
Parity none
4.11 Cold start delay
This function is used to suppress false measurement values while the probe is
warming up. A cold start delay is always activated after “Power off” and probe
replacement. The cold start delay can be interrupted at any time:
•
using the multi-function starter
• using the display and operating unit
• using remote display software, see separate publication
During the cold start delay or a fault:
•
a default value (factory setting)
O
2
→
0 vol. % (P361), COe Æ 0 ppm (P371) can be output.
• In P362 for O
2
,
in P372 for CO
e
the “Type of default value” can be set:
OFF : No default value is output.
ON : The default value set in the parameter in front is output.
+Maintenance (factory setting): The default value set in the parameter in front is
output during “MAINTENANCE” as well.
+Maint.froz .: With this setting, the default value set in the parameter in front is output
during cold start and fault, as before, but in addition the previous measurement value
is frozen as long as Maintenance mode is active.
During cold start/fault, the default value has priority over the freezing of the
measurement value during maintenance.
After a heating phase of 10 minutes, the probe voltage U-O2 stabilises to values
between -20 mV…+20mV and the internal cell resistance Ri settles at values below
100
Ω
.