RS 232 interface. Lamtec KS1-DK, LT2

4 Technical Description

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

.

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