15 | Examples of settings
178
D-ISC 100 x xx2
Use of signal ranges 1 and 2 (automatic change-over)
1
Maximum signal range * (signal range [}204] )
2
Adjusted output range (here ¼ or ½ x*, possible setting 0 … x *)
dependent upon the sensor
*
(e.g. %OP, scattered light, extinction, %transmission, gas velo-
city)
dependent upon the sensor
Fig.15.38: Automatic range change-over
Example 1
(X = maximum signal range = 100% OP)
In our example from Fig.15.38, the end value in the firstoutput
range is set to 25% opacity (¼X). If for instance 22% opacity is
exceeded when range1 is active and the change-over1 is set to
22, the system changes over to output range2. Here the output
range end value is set to 50% opacity (½X). If the measured
value now falls below 15% opacity when range2 is active and
the change-over2 is set to 15, the system changes back to out-
put range1.
Example 2
(X = maximum signal range = 40m/s)
In our example from Fig.15.38, the end value in the firstoutput
range could be set to 10m/s gas velocity (when linked to an ap-
propriate sensor). If for instance 8m/s gas velocity is exceeded
when range1 is active and the change-over1 is set to 8, the sys-
tem changes over to output range2. Here for instance the range
end value is set to 20m/s gas velocity. If the measured value
now falls below 5m/s gas velocity when range2 is active and the
change-over2 is set to 5, the system changes back to output
range1.
To Next Page
Loading...
Need help?
General
