Status signal output DO: DO passive switch signal, the operator closes the output switch signal to the first stage of the DCS system or regulator in manual control, DCS system or regulator DO status signal received after stopping PID operation, and the operation signal output tracking valve position feedback signal. When the operation is automatically transferred from manual control, DO status signal Undo display controller, DCS systems, or pre-regulator to control the current output value of the initial value of the recovery PID control. Also displayed when the operation is automatically transferred from the manual control state controller how to sell to the current valve position given initial values, start manual changes in control, so the operator to manually switch to automatic, automatic transfer control is no manual mode disturbance switching. Measured value transmission output type and the load: (4 ~ 20) mA output display controller principle, load resistance <750Ω 0 ~ 10mA output, load resistance <1500Ω (1 ~ 5) V output, load resistance> 250kΩ cold junction compensation. : If the meter for thermocouple inputs, selectable automatic cold junction compensation or no compensation, compensation range: 0 ~ 50 ℃ manual output: users can directly modify the control output through the key. (Manual / automatic bumpless switching) display: LED, LCD screen measurements, all four display target. Display control device parameters, display controller, Tianchang instrument linked instruments provided by the United Instrument Sales Co., Ltd. Tianchang instrument. Tianchang instrument Alliance Instrument Sales Co. (www.ylybxs.com) (www.ylybxs.com) strong, credible, in Chuzhou temperature instrumentation industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Tianchang instrument linked instruments and you hand into the brilliant, for a better future!