Functions
6.9 [2.10] Settings > Correction of cross-interferences
Operating with the Local User Interface
Operating Manual, 06/2017, A5E31930478-05
175
Note
Non-permitted activation of correction of cross-interference
If you activate correction of cross
-interference before an external analyzer supplies
correction values, the device outputs the error message "[238] Interference gas measured
value uncertain or faulty".
Check whether the external analyzer devices/analyzer modules are correctly connected
via MODBUS TCP or the analog outputs or inputs.
Make sure that signal transfer operates reliably.
If necessary, adapt the parameter assignment of the MODBUS communication or at the
analog inputs of the device.
Note
Correction of cross-interference of the component CH
4
in the "furnace gas" and "converter
gas" application
In the applications mentioned, no correction of cross
-interference is possible for the
4
. In this case, deactivate correction of cross-interference for interference
3 (CH
4
):
Menu [2.10]: → Change to Correction of cross-interference
Menu [2.10.5]: → Deactivate or set interference gas 3
Assigning correction of cross-interference with a constant (Page 176)
Assigning variable correction of cross-interference (Page 177)
Correction of cross-interference in the application "H2 in N2 (Q)" for furnace gas, converter gas and
wood distillation
Overview: Application "H
2
in N
2
(Q)"
Interference gases can be included in a measuring gas matrix invariable concentrations. The
concentration values are detected by external analyzers and fed in via MODBUS or the
analog inputs of the CALOMAT 7 analyzer module. With correction of cross-interference with
SIPROCESS GA700 devices, the linear correction coefficients are application-dependent
and are therefore set as default in the factory. No further parameter settings are required
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