YSI IQ SensorNet DIQ/CR3 - Manual (Page 25)

MIQ/CR3; DIQ/CR3 Settings
4 - 11 ba76032e01 01/2012
Negative characteristic
curve
The proportional output range begins below the initial value. If the
proportional range is undercut or exceeded, the selected behavior
comes into force.
Fig. 4-10 Pulse width output
Fig. 4-11 Frequency output
1 Start value
Measured value with a minimum pulse width or switching
frequency
2 End value
Measured value with a maximum pulse width or switching
frequency
0
10
50
90
100
Proportional
band
t
On
t
Of f
50 % 50 %
10 %
10 %
90 %
90 %
Cycle
duration T
Time
Measured value 1 2
Pulse v [%] width
0
50
100
Measured value
Proportional
band
1
50 % of maximum
switching frequency
Maximum
switching frequency
Time
2
Switching frequency f [1/min]
Minimum
switching frequency