Series of intelligent handheld devices

Overview YJ XDFD/QSeries of intelligent handheld devicesIt is an instrument that can replace the operator and servo amplifier in traditional DD type automation control systems. Adopting on-chip system technology, the structure is simple, the performance is * *, the quality is reliable, and the dual digital and light column triple display is beautiful and eye-catching. Can be used in conjunction with various intelligent regulators or DCS control systems both domestically and internationally. As a backup manual output unit for host failure and maintenance. This series of instruments is divided into: D-type operation, 0-type operation, and hard hand operation. The D-type manual controller calculates the control signal transmitted by the regulator or DCS and the valve position signal feedback from the actuator. After the signal is calculated, it outputs a linear current or voltage signal to directly drive the pneumatic valve Control the opening and closing of the valve while outputting the valve position signal to the regulator. When the operator switches from automatic to manual mode, the status signal of the switch quantity is output to the regulator as a valve position tracking signal for the regulator Hard hand operation is controlled by an operator without automatic control, which only receives valve signals and outputs them through human-machine dialogue. The output signals can be forward and reverse electrical signals (D-type hard hand operation) or linear current and voltage signals (10 type hard hand operation). And display the valve position by receiving the valve position signal To determine the opening of the valve.