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B203, Building 10, Honghui New Huiyuan, Lane 4718, Gonghe New Road, Jing'an District, Shanghai
Shanghai Chending Automation Equipment Co., Ltd
B203, Building 10, Honghui New Huiyuan, Lane 4718, Gonghe New Road, Jing'an District, Shanghai
Original Samson 3725-0000000000.00 in stock Shanghai Chending has a large number of Samson locators. Welcome to inquire about the model.Valve positioners are divided into pneumatic valve positioners, electrical valve positioners, and intelligent valve positioners based on input signals. The input signal of the pneumatic valve positioner is a standard gas signal, for example, a 20~100kPa gas signal, and its output signal is also a standard gas signal. The input signal of the electric valve positioner is a standard current or voltage signal, such as a 4-20mA current signal or a 1-5V voltage signal. The electrical signal is converted into electromagnetic force inside the electric valve positioner, and then the gas signal is output to the toggle control valve. The intelligent electrical valve locator converts the current signal output from the control room into the gas signal that drives the regulating valve. Based on the frictional force of the valve stem during the operation of the regulating valve, it offsets the unbalanced force caused by the fluctuation of the medium pressure, making the valve opening correspond to the current signal output from the control room. And it can intelligently configure and set corresponding parameters to improve the performance of the control valve.
According to whether the valve positioner is equipped with a CPU, it can be divided into ordinary electrical valve positioners and intelligent electrical valve positioners. Ordinary electrical valve positioners do not have a CPU, therefore they do not have intelligence and cannot handle related intelligent calculations. The intelligent electrical valve locator is equipped with a CPU, which can handle intelligent operations such as non-linear compensation for forward channels. The fieldbus electrical valve locator can also be equipped with functional modules such as PID to achieve corresponding operations. The detection method based on feedback signals can also be classified.
According to the direction of action, it can be divided into one-way valve positioners and two-way valve positioners. When a one-way valve positioner is used for a piston actuator, the valve positioner only works in one direction, while a two-way valve positioner acts on both sides of the cylinder of the piston actuator in two directions.
According to the gain symbols of the output and input signals of valve positioners, they are divided into positive acting valve positioners and reverse acting valve positioners. When the input signal of the positive action valve positioner increases, the output signal also increases, so the gain is positive. When the input signal of the reaction valve positioner increases, the output signal decreases, resulting in a negative gain.
According to whether the input signal of the valve positioner is an analog signal or a digital signal, it can be divided into ordinary valve positioners and fieldbus electrical valve positioners. The input signal of a regular valve positioner is an analog air pressure, current, or voltage signal, while the input signal of a fieldbus electrical valve positioner is a digital signal of the fieldbus.Original Samson 3725-0000000000.00 in stock 
In addition to the 3730-3 series, there are also 3730-0, 3730-1, 3730-2, 3730-4, 3730-5, 3730-6, 3724, 3738-50, 3731-5, 3766, 3776, 4765 and other series. The 3730-3 series is still commonly used, and the commonly used models include 3730-3100, 1000, and 40000
3730-3100000040000
Partial stock models:
Original Samson 3730-21000000400000000
Original Samson3730-30000000400000000
Original Samson3731-3210141100010000.01
Original Samson6109-100101000000.00
Original Samson6111-0020111612110000
Original Samson3730-31001000400000000.03
Original SamsonSAMSON 4763-10120031110.22
Original SamsonSAMSON 3767-1000X2X001.06
Original SamsonSAMSON 4763-00110012110.03