Servo Pressure Controllers
Precision Servo Pressure Controllers for Advanced Pneumatic Control
Bellofram Precision Controls offers a comprehensive range of servo pressure controllers and electro-pneumatic pressure regulators designed for accurate, responsive control of pneumatic pressure. Available configurations include analog and digital pressure controllers, circuit-card regulators, weatherproof regulators, high-flow pressure controllers, electric-pneumatic control valves, and proportional pressure regulators.
Selected Bellofram servo pressure controllers use closed-loop pressure control with internal pressure feedback to continuously compare actual output pressure with the commanded setpoint. This allows the controller to adjust pneumatic output as operating conditions change, supporting precise and repeatable pressure regulation in automated equipment and process-control applications.
Depending on the model, control options include industry-standard 4-20 mA and 0-10 VDC analog signals, serial communications, digital control, analog pressure-monitor outputs, logic outputs, local displays, and external feedback capability. Available pressure and flow configurations range from low-flow and vacuum control to high-pressure and high-flow pneumatic applications.
Why Choose Bellofram Servo Pressure Controllers?
Closed-Loop Pressure Control: Selected models use internal pressure feedback to monitor actual outlet pressure and automatically adjust pneumatic output toward the commanded setpoint, providing accurate and repeatable pressure regulation.
Analog and Digital Control Options: Bellofram offers controllers that accept common industrial signals such as 4-20 mA and 0-10 VDC. Selected digital models also provide serial communication for integration with PLCs, computers, and automation systems.
Pressure Monitoring: Depending on the controller, analog monitor outputs, logic outputs, digital displays, and local programming interfaces are available to provide information about actual output pressure and controller status.
Wide Pressure Range: Bellofram servo pressure controller configurations are available for applications ranging from vacuum and low-pressure control to output pressures as high as 600 psig on selected models.
High-Flow Pressure Control: High-flow configurations are available for applications that require substantially more pneumatic capacity than a standard electronic pressure regulator. Selected controllers can be paired with volume boosters, while the Type 3215 integrates pressure control and high-flow boosting into a single assembly.
Compact and Weatherproof Designs: Circuit-card pressure regulators provide compact options for OEM equipment, while weatherproof controller families are available for installations that require additional environmental protection.
Low Air Consumption: Selected servo pressure controllers use solenoid-based control systems designed for negligible or low steady-state air consumption while maintaining controlled outlet pressure.
Analog, Digital and Proportional Pressure Control Options
Bellofram offers multiple approaches to electronic pneumatic pressure control. Analog circuit-card and weatherproof regulators provide pressure control from standard electrical command signals. Digital models add serial communication and expanded electronic control capabilities, while proportional pressure regulators provide compact, fast-response pressure control for automated machinery and process applications.
Single-loop and dual-loop configurations are available within selected controller families. This allows engineers to select a pressure controller based on the required control architecture, pressure range, flow capacity, communication method, enclosure, and installation requirements.
Servo Pressure Controller Applications
Bellofram servo pressure controllers and electronic pressure regulators are suited for applications including OEM automation, medical equipment, HVAC, vacuum control, web tensioning, automotive painting, tire manufacturing, robotics, machining centers, material handling, position control, force and torque control, liquid and gas processing, coating processes, and other systems requiring electronically controlled pneumatic pressure.
Find the Right Servo Pressure Controller
Selecting the right servo pressure controller or electro-pneumatic pressure regulator depends on factors including required output pressure, supply pressure, pneumatic flow, exhaust capacity, control signal, communication requirements, accuracy, response characteristics, feedback requirements, enclosure type, port size, and installation environment.
Explore the Bellofram servo pressure controllers above to compare analog, digital, circuit-card, weatherproof, proportional, and high-flow configurations. Bellofram Precision Controls can also assist with selecting or configuring a pressure-control solution for specialized OEM and industrial applications.
Servo Pressure Controller FAQs
What is a servo pressure controller?
A servo pressure controller electronically controls pneumatic output pressure in response to an electrical command signal. Closed-loop models measure actual outlet pressure and automatically adjust the pneumatic control elements to move the output toward the requested pressure setpoint.
How does closed-loop pressure control work?
Closed-loop pressure control uses pressure feedback from the regulated output. The controller compares the measured pressure with the commanded setpoint and adjusts its pneumatic valves as needed to reduce the difference between the two values. This continuous feedback process supports accurate and repeatable pressure regulation.
What is the difference between a servo pressure controller and a mechanical pressure regulator?
A mechanical pressure regulator is generally adjusted mechanically to maintain a selected downstream pressure. A servo pressure controller uses an electrical control signal and electronic pressure-control system to change pneumatic output pressure automatically. This makes servo controllers useful when pressure must be controlled remotely or changed dynamically by an automation system.
What electrical input signals can Bellofram servo pressure controllers use?
Depending on the model, Bellofram servo pressure controllers can accept common industrial analog signals including 4-20 mA and 0-10 VDC. Selected digital models also support serial communication for control through PLCs, computers, or other automation equipment.
What is the difference between an analog and digital pressure controller?
An analog pressure controller responds primarily to an electrical command signal such as 4-20 mA or 0-10 VDC. Digital pressure controllers can add features such as serial communication, digital programming, data access, or local display capabilities while still supporting analog control signals on selected models.
Can servo pressure controllers provide pressure feedback to a PLC?
Yes, selected Bellofram controllers provide analog monitor outputs that represent actual output pressure. Depending on the model, additional logic outputs, serial communication, or external feedback capabilities may also be available for integration with PLCs and automation systems.
What pressure ranges are available for Bellofram servo pressure controllers?
Available ranges depend on the controller family. Bellofram offers configurations for vacuum and low-pressure applications as well as higher-pressure models with output ranges extending to 600 psig on selected servo pressure controllers.
Are high-flow servo pressure controllers available?
Yes. Bellofram offers high-flow pressure-control options for applications requiring greater pneumatic capacity. The Type 3215 integrates a servo pressure controller with a high-flow volume booster, while other controller families can be combined with external volume boosters when additional flow is required.
What is a proportional pressure regulator?
A proportional pressure regulator electronically varies pneumatic output pressure in response to a command signal. This allows pressure to be adjusted automatically as part of an industrial control system instead of being set manually like a conventional mechanical regulator.
What applications use servo pressure controllers?
Servo pressure controllers are used in applications including automation, medical equipment, HVAC, vacuum control, web tensioning, automotive painting, tire manufacturing, robotics, machining, material handling, position control, force and torque control, and liquid or gas processing.
How do I choose the right servo pressure controller?
Selection should consider output pressure range, supply pressure, required airflow, exhaust capacity, electrical command signal, communication method, accuracy, response requirements, internal or external feedback, enclosure, port size, mounting method, and operating environment.
