Configuration: Factory Configuration; Automatically Executed Functions Of The H2S Sensors; Probe Protection And Purging Function; Probe Protection Function - Siemens ULTRAMAT 23 Series Equipment Manual

8.4.4

Configuration: Factory configuration

Overview
Factory configur.!
Enter special code
8.5

Automatically executed functions of the H2S sensors

8.5.1

Probe protection and purging function

A protection and purging function is implemented by means of software since H
concentrations above the specified continuous concentration impair the functionality and
service life of the H
In addition, a purging function is implemented for the 50 ppm H
intermittent measurement above the permissible continuous concentration.
These functions are executed automatically when certain operating states occur.
8.5.2

Probe protection function

Definition of probe protection function
A value 1.1 times the specified range can be considered as the maximum continuous
concentration. Although a measurement above such a concentration is still correct, the probe
is damaged by longer exposure. The maximum continuous concentration remains constant
even when changing the measuring range.
The protection function is also implemented with the 50 vpm probe for compatibility reasons
even though its maximum continuous concentration is 12.5 vpm. The protection function is
executed above this value.
Execution of this function is the same for all probes. The function test is set during execution of
the protection function in order to signal that the displayed value is incorrect.
How the protection function works
The protection function is triggered if the continuous measured value of H
maximum continuous concentration (110 % of full-scale value) in measuring mode for a period
of 3 seconds.
ULTRAMAT 23
Equipment Manual, 04/2022, A5E37100388-012
8.5 Automatically executed functions of the H2S sensors
These are factory settings made especially for your analyzer.
Since incorrect modifications to these parameters may perma‐
: 0000 nently influence the functions of your analyzer, access to these
functions is only possible by specially trained and authorized
844
servicing engineers using a special access code.
S probes.
2
Functions
S
2
S probe in order to allow an
2
S is greater than the
2
157