ABB EasyLine EL3000 - Set Low-Pass Time Constant

148 EL3000 CONTINUOUS GAS ANALYZERS | OI/EL3000-EN REV. D
… 10 Configuration
… Limit values
Note
If several measured components are configured in the gas
analyzer and these measured components are assigned limit
values, the status of the inactive measured components is set to
‘normal’ upon changing the active measured component and the
active measured component is monitored.
Standard configuration
As a rule, limit value monitoring for those measured components
to be measured by the gas analyzer is factory-set.
This requires that there be a sufficient number of digital outputs
on the digital I/O modules to handle the number of sample
components, see Digital I/O module on page 97.
Set low-pass time constant
Setup
Figure 79: Menu ‘Component’
The low pass time constants can only be set in the configurator
and not in the gas analyzer.
Parameters
A non-linear filter with 2 low-pass time constants and a
switching threshold can be configured for each measured
component.
Parameter
Description
Low
-Pass Time Constant
(Low
-pass time constant)
Value range: 0
to 60 s
Non
-Linear LP Time Constant
(Low pass time constant for non
-
linear filter)
Value range: 0
to 60 s
Non
-Linear Filter Threshold
(Switching threshold for non
-linear
filter)
Value range: 0
to 9.99 % of the
measuring span of
the physical
measuring range.
If the switching threshold is up
-scaled
during a measured value change, the low
pass time constant for non
-linear filters
takes effect.