The positioners have the task of guaranteeing that the valve position, which is represented by the controlled variable x, is correctly assigned to the input signal, represented by the reference variable w. This is accomplished by comparing the input signal from the control system with the movement of the control valve. As a result, an output signal pressure pst, representing the output variable y, is emitted.
For double-acting actuators, two opposed signal pressures are required. A reversing amplifier fulfills this function by producing the necessary signal pressures.
In summary, the positioners play an integral role in ensuring that the valve and input signals are precisely correlated. These devices compare control system signals to valve movements, ultimately providing support for the required output signal pressure. For double-acting actuators, a reversing amplifier produces the necessary opposed signal pressures.
Versions for use in hazardous areas are available with type of protection intrinsic safety II 2G Ex ia IIC T6 or II 3G Ex nA II T6 for Zone 2.
This product has a "Flameproof enclosure" Ex d with Type 3766 Positioner and Type 6116 i/p Converter (Fig. 2). It can be directly attached to Type 3277 Actuator (Fig. 3) or other actuators according to IEC 60534-6. It can also be attached to rotary actuators according to VDI/VDE 3845.
| Product Name: | Samson 3767 |
| Brand Name: | Samson |
| Product: | Electropneumatic Positioner |
| Material: | Aluminum |
| Control Loop: | 4 To 20 MA |
| Acting: | Single Acting Or Double Acting |
| Actuator: | Linear Or Rotary |
| Communication: | Without |
| Usage: | Challenging Transit Times And Ambient Conditions |
| Diagnostics: | Without |
Single-acting or double-acting positioners are designed to be attached to pneumatic control valves for improved performance.
These positioners are a vital component in control valve operation, ensuring the valve is set to the desired position with accuracy and precision.
The difference between single-acting and double-acting positioners lies in their operational mechanism. Single-acting positioners use air pressure to move the valve to the desired position in one direction, while double-acting positioners use air pressure to move the valve in both directions for greater flexibility.
Regardless of the type, attaching a positioner to a control valve leads to more efficient and effective operations, resulting in improved productivity and cost savings.
Product Packaging:
The Control Valve Positioner product is packaged securely to ensure safe delivery. The product is wrapped in bubble wrap and placed in a cardboard box with padding to prevent any damage during shipping.
Shipping:
Shipping is done through reliable courier services to ensure timely delivery of the product. The shipping charges are calculated based on the weight and size of the package, as well as the shipping destination. The estimated delivery time will be provided at the time of order confirmation.
