YSI IQ S ENSOR N ET DIQ/S 182 XT User Manual
Page 206
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Settings
MIQ/CR3; DIQ/CR3
4 - 34
ba76032e01
01/2012
Application example
Feedback control of the D. O. concentration
Sensor: TriOxmatic 700 IQ (measuring range: 0 ... 60 mg/l)
The control parameters form the following (negative) characteristic
curve:
Fig. 4-19 Characteristic curve for application example
The controller works with the following gain:
Control parameters
Value
Nominal value
4 mg/l
Xp
10 % of the measuring range or 6 mg/l
Imin
8 mA
Imax
14 mA
Io
12 mA
ti
0 s (no I controller part)
td
0 s (no D controller part)
0
8
14
12
Imax
Imin
Current I [mA]
Measured value [mg/l]
4
2
8
Io
Nominal value
Xp
mg/l
mA
1
mg/l
6
mA
6
K
=
=
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