Silian Technical Import & Export Co., Ltd.Chongqing

Model Number: HEP15/16/17-#6031 Brand Name: HEP15/16/17 Key Specifications/Special Features: HEP15/16/17 electro-pneumatic positionerHEP15/16/17 single-acting electro-pneumatic positioner is one of the main accessories of CV3000 series control valve which is systematically used with pneumatic diaphragm actuatorIt adopts dynamic balance principle and converts electric signal of the regulator into pneumatic signal of control valve, thereby the control valve is ensured to rapid and proper locating according to the signal output from the regulator, the flow characteristic or action type of control valve can be changed at the same time.Features1．The amplifier has large capacity and low air consumption. There are three steady-flow ports which can change the flow of actuator from min. to max. and enhance the stability and sensitivity.2．High accuracy of torque motor loop, it locates in an explosion-proof terminal box with junction box. It can be inspected after removing the rear cover while the positioner is being used.3．The magnetic body is made from high stored energy RE material. The electric current is input through elastic element without leading wire.4．Compact structure and small volume of positioner can be installed on small actuator.
Flow characteristics
There are three characteristics of positioner: linear, equal percentage and quick-opening
The usage of component is to resolve the problem that the flow characteristics of control valve can’t satisfy the flow characteristics of regulator or technical process requirement
If the positioner uses linear characteristic, the flow characteristic is the same as that of plug, and if the positioner adopts other characteristics, the relationship of input signal and stem travel is not linear, here the increment of flow capacity will be changed as the change of input signal.