EL3000
CONTINUOUS GAS ANALYZERS | OI/EL3000-EN REV. D
147
Caldos27 – Change measuring range limits
Menu Path
‘
Setup /
Measurement Ranges’
The measuring range limits can also be set in the Configurator,
see
Measuring range configuration with ECT
Note
• Measuring ranges may not be specified within ignition limits.
• After changing the measuring range limits, the calibration of
the relevant measuring range needs to be checked.
Measurement range limits
The
lower range value
and the
upper range value
must be within
the physical range.
Setting range
The measuring range can be freely set within the valid limits for
the measured component.
• For the 'relative thermal conductivity’ component set at the
factory, the measuring range is fixed to rTC = 0 to 64.000..
• The widest measuring range is 0 to 100 vol.-% or
0 vol.-% until saturation, depending on the measurement
task.
Physical measuring range
Each analyzer has one physical measuring range for each sample
component. The limits of this measuring range are usually 0 vol.-
% or 100 vol.-%.
Oxygen sensor – Changing measuring
range limits
Menu Path
‘
Setup /
Measurement Ranges’
The measuring range limits can also be set in the Configurator,
see
Measuring range configuration with ECT
Setting range
The measurement range is freely adjustable from
0 to 5 vol.-% O
2
to 0 to 25 vol.-% O
2
.
The lower range value cannot be changed.
Limit values
Setup
Figure 78: Menu ‘Limit’
The limit values can only be set in the configurator and not in the
gas analyzer.
Parameters
Parameter
Description
Limit Name
(Limit value name)
The name of the limit value.
Limit Active
(
Limit value active)
Limit value monitoring can be
activated or deactivated.
Assigned Component
(Assigned sample component)
Selection of all measured components
present in the gas analyzer.
Limit Value
(Limit value)
Value range: within the physical
measuring range of the analyzer.
Direction
(Direction of action)
The alarm signal is given when the
measured value is larger or smaller
than the set limit value.
Hysteresis
(Hysteresis)
Value range: within the physical
measuring range of the analyzer.
Delay Time
(Delay time)
Waiting time after the limit value event
(come or go) has occurred until the
output is updated.
Value range 0 to 60.000 ms.
Confirmation required
(
Acknowledgment required)
If a limit value is up-scaled, the output
signal is not reset until the limit value
has been down-scaled again
and
the
user has acknowledged the status
message.
