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12
12
-8
Air Operated V
alve/Contr
ol V
alve
Air Operated Valve/Control Valve
Step
3
Other usage examples
Signals (DC)
20 mA
Fully open
(100%)
Flow rate:
Maximum
Increase
signal
Open
Flow rate:
Increase
4 mA
Fully close
(0%)
Flow rate:
Minimum
Valve operation (valve opening) Condition of fluid
Signals (DC)
20 mA
Fully open
(100%)
Pressure:
Minimum
Increase
signal
Open
Pressure:
Decrease
4 mA
Fully close
(0%)
Pressure:
Maximum
Valve operation (valve opening)
Condition of fluid
Signals (DC)
20 mA
Fully open
(100%)
Water level:
Quick increase
Increase
signal
Open
Water level:
Slow increase
4 mA
Fully close
(0%)
Water level:
Stable
Valve operation (valve opening)
Condition of fluid
Controller
Flow rate sensor
CT-1
Control valve
DC: 4-20 mA
Pressure gauge
[For flow rate control]
Input Signal
DC: 4-20 mA
CT-1
Control valve
Pressure sensor
Controller
Pressure gauge
[For pressure control]
Input Signal
Controller
Input Signal
DC: 4-20 mA
Water sensor
CT-1
Control valve
Tank
Pressure gauge
[For water level control]