DFQ manipulator is an auxiliary unit of DDZ-III electric unit combination instrument. It is used to remote control actuator. When there is indicating circuit around manipulator, it can monitor the change of controlled parameter.

When the manipulator has the function of manual and automatic switch, it can be installed between plate-mounted instrument and actuator. If the regulator is broken and need to change from system to mend, you can switch to DFQ manipulator to control actuator and keep system working normally.

DDC reserve manipulator is series connect between computer and actuator. When the computer is working normally, the manipulator will track the output to control actuator. When it receive the broken signal, it will cut the computer signal and keep the output original; at the same time, you can operate by band and ensure the system to work normally.