Electric regulating valve installation and debugging electric regulating valve signal corresponding to the valve opening

Electric regulating valve installation and debugging electric regulating valve signal corresponding to the valve opening

Electric regulating valve installation and debugging
Before the installation of electric regulating valve must read the manual carefully, cut off the relevant power supply and must be installed by professional and technical personnel. Water must flow in the same direction as the arrow on the valve body. The valve body shall be located above the water receiving plate of the coil to ensure that water drops into the water receiving plate. The valve body and driver must be installed in the vertical direction of 60¡æ range, the above should be at least 30mm space for disassembly. The installation must be in a place where maintenance personnel can reach the surrounding pipes, equipment, and buildings through the manhole. Install the driver only after the valve body has been installed and the pipeline has passed the pressure test. If the driver has been installed on the valve body, do not apply force to the driver during installation and commissioning, otherwise it will damage the driver. After installation and check correct, power debugging. At least three full cycles of the drive should be observed until all components are correct. After no water debugging qualified, then carry out water test. The pressure difference between the upper and lower water of the system must be strictly controlled within 0.15MPa to ensure the effectiveness of the electric regulating valve on the water flow switch.
Electric regulating valve signal corresponding to the valve opening Electric regulating valve signal corresponding to the valve opening
Electric regulating valve by accepting the control instrument from 4-20MA signal, to complete the control of the medium in the pipeline, flow, temperature. So how much is the valve opening corresponding to the 4-20MA current signal, and what is the conversion method?
Electric regulating valve received signal and open conversion method: when the electric regulating valve to accept the current signal is less than or equal to 4MA, the valve is closed. The valve opening is 6.25% when the receiving signal is 5MA. The conversion method also takes the 20MA signal minus the 4MA off signal to equal the 16MA on signal. Divide the opening of the regulating valve by the signal opening of 16MA to get no MA open signal is 6.25%.
Electric regulating valve signal corresponding to the valve opening description:
That is to say, when the current signal is 8MA, the valve is opened by one quarter and the opening is 25%; When the current signal is 12MA, half of the valve is opened, and the opening degree is 50%. When the current signal is 16MA, the valve is open three-quarters, and the opening is 75%; When the current signal is 20MA, the valve is in full open state and the opening degree is 100%. The above control valve technical knowledge by Shanghai professional control valve manufacturer – Shanghai Taichen Valve Co., LTD.