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Note
A set limit only triggers a relay contact if a relay has previously been assigned to the
corresponding limit signal (see section Configuration: Inputs/outputs/pump: Assign relays
(Page 140)). The limits are not updated:
• During the first warm-up phase
• During an AUTOCAL
• During the message: Function control and analog output at 'Hold measured value' (see
section Configuration: Inputs/outputs/pump: Analog outputs (Page 137))
Limit 1
Lim. 1: 2000 mg/m
Alarm conc. :-----
The limit value has a hysteresis of ≤ 2% of the set full-scale value.
8.3.3
Parameters: Limits: H2S sensor protection
Limit 1 H2S
Limit 2 H2S
Protec. sensor H2S
Protec. sensor H2S :
ULTRAMAT 23
Equipment Manual, 04/2022, A5E37100388-012
If you have selected "Limit 1" or "Limit 2", a menu display appears
SO2
3
in which you can enter the lower or upper limit for each com‐
ponent. You can define the value in the second line, and the
condition under which a contact is be triggered in the third
8321
(Alarm at conc.:):
• High: with upward violation
• Low: with downward violation
•
- - - - -: no message
If 'H
S' is selected as the component in the higher-level menu
2
display, the 'H
tion to the limits. The 'Limit' function is described in section Pa‐
rameters: Limits (Page 130).
832
In the 3rd line you can select the 'H
ON
The adjacent menu display appears when you select the func‐
tion in which you can switch the 'H
on and off.
8323
Hydrogen sulfide (H
dition and in combination with other gases. This function pre‐
vents damage occurring to the H
tions of H
of this function is described in section Probe protection function
(Page 157).
S sensor protection' function is selected in addi‐
2
S) is a corrosive gas, especially in wet con‐
2
2
S. This function is enabled by default (ON). Execution
2
Functions
8.3 Parameter
S sensor protection' function.
2
S sensor protection' function
2
S sensor from high concentra‐
131
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