Pneumatic and Electronic Controls - Dwyer
Centro provides various products, including valves, motion control, electrical enclosures, HMIs, power tools, and electric control systems. In addition to these products, we offer compressed air products to power p...
Transformers are electrical devices used to transfer electrical energy between circuits through electromagnetic induction. Transformers are important for stepping up or stepping down voltage levels to match specific application requirements in industrial, commercial, and residential settings. Transformers play a vital role in power distribution, for efficient and safe electricity transmission for various devices and systems. Browse our selection below or contact us to speak to a product expert.
Centro offers linear cylinders, also known as linear actuators or hydraulic/pneumatic cylinders, which are mechanical devices that convert energy into linear motion. They are widely used in various industries, including manufacturing, automation, construction, and transportation. Linear cylinders consist of a piston or plunger that moves back and forth within a cylindrical housing, generating linear force and motion. These cylinders are powered by hydraulic fluid or compressed air, which is supplied to one side of the cylinder to push the piston in one direction, while the other side vents or returns the fluid to complete the cycle. Linear cylinders come in different designs, such as single-acting (one-directional force) and double-acting (bi-directional force). They offer precise control over linear movement, allowing for precise positioning, lifting, pushing, pulling, and clamping applications. Linear cylinders are essential in various industrial processes, such as material handling, machine tooling, assembly lines, and heavy equipment operations. With their robust construction, reliable performance, and versatility, linear cylinders enable efficient and controlled linear motion in various applications.
Electric linear actuators are used to convert electrical energy into linear motion. Electric linear actuators operate by converting rotary motion from an electric motor into linear motion through a lead screw, belt, or other mechanisms. Electric linear actuators offer precise control, quiet operation, and are often preferred for applications requiring accurate positioning and force control. Browse our selection below or contact us to speak with a product expert.
Centro offers a wide range of electrical accessories used to enhance the functionality, safety, and efficiency of electrical systems. These accessories include items such as connectors, terminals, wire management products, fuses, circuit breakers, and protective devices like surge suppressors and grounding equipment. Browse our selection below or contact us to speak to a product expert.
At Centro, we carry a complete selection of electrical accessories available online. Our products include control lighting, electrical sounders, thermal management, and wiring accessories. We only have products from the most trusted brands in the industry, so you can be sure you're getting the best quality possible. And with our convenient online ordering system, getting the electrical accessories you need doesn’t have to be challenging. So please browse our selection today and see why Centro is the go-to source for all your electrical needs.
Instrumentation refers to devices that measure or control physical variables such as temperature, level, flow, or pressure. These products are essential in the industry because they allow for maximum output with minimum use of raw materials. Flow instruments include flow meters, positive displacement meters, rotameters, flow switches, oval gear meters, and calibration equipment. Analytical instruments measure temperature, pH, conductivity, dissolved oxygen, turbidity, humidity, chlorine, gases, trace oxygen resistivity, and carbon. Pressure instruments include pressure gauges, pressure switches, pressure transmitters, differential pressure gauges, cryogenic gauges, O.E.M. gauges, submersible gauges, digital pressure gauges, and calibration equipment. Level instruments, such as ultrasonic sensors, magnetic float sensors, capacitance sensors, submersible pressure sensors, differential pressure sensors, float valve sensors, float switches, electro-optic sensors, and radar sensors, are used to measure the level of a substance in a container or vessel.
At Centro, we carry a complete selection of enclosures available to purchase online. Electrical enclosures protect electrical components from the environment and prevent accidental contact with live wires. Disconnect enclosures provide a safe and convenient way to disconnect power sources, while sloped enclosures allow for better airflow around electrical components. Wiring troughs route cables and wiring through a building and can be either opened or closed. Whatever your enclosure needs, Centro has you covered. Please browse our website today to learn more about our products and take advantage of our online ordering system.
$77.10
Subject to factory lead times
$80.75
$26.57
$146.80
$70.80
Subject to factory lead times
$21.70
Subject to factory lead times
$27.15
Subject to factory lead times
$25.95
Subject to factory lead times
$37.95
Subject to factory lead times
$28.25
Subject to factory lead times
$39.10
Subject to factory lead times
$39.95
Subject to factory lead times
$44.20
Subject to factory lead times
$44.20
Subject to factory lead times
$48.80
Subject to factory lead times
$50.80
Subject to factory lead times
$47.95
Subject to factory lead times
$34.85
Subject to factory lead times
$32.00
Subject to factory lead times
$43.95
Subject to factory lead times
$43.65
Subject to factory lead times
$51.65
Subject to factory lead times
$51.10
Subject to factory lead times
$58.50
Subject to factory lead times
$77.10
Subject to factory lead times
$80.75
$26.57
$146.80
$70.80
Subject to factory lead times
$21.70
Subject to factory lead times
$27.15
Subject to factory lead times
$25.95
Subject to factory lead times
$37.95
Subject to factory lead times
$28.25
Subject to factory lead times
$39.10
Subject to factory lead times
$39.95
Subject to factory lead times
$44.20
Subject to factory lead times
$44.20
Subject to factory lead times
$48.80
Subject to factory lead times
$50.80
Subject to factory lead times
$47.95
Subject to factory lead times
$34.85
Subject to factory lead times
$32.00
Subject to factory lead times
$43.95
Subject to factory lead times
$43.65
Subject to factory lead times
$51.65
Subject to factory lead times
$51.10
Subject to factory lead times
$58.50
Subject to factory lead times
- Selecting the right pneumatic cylinder starts with defining the four core parameters of your application. Define four core parameters: bore size (force output = pressure × piston area, plus a 25–50% safety factor), stroke length (match to required travel, avoid excess), mounting style (fixed, flange, or pivot to suit your mechanical arrangement), and environment (standard, washdown, or food-grade seals). Speed is controlled by external flow valves, not cylinder selection. For precise positioning, consider a guided or rodless cylinder with position sensing rather than a standard unit.
- A soft starter ramps voltage at startup to limit inrush current and reduce mechanical shock, then steps aside once the motor reaches full speed. Use one when smooth starting is your only requirement. A VFD controls motor speed continuously throughout operation, making it the right choice whenever the process needs variable speed — conveyors, pumps, fans — and it delivers significant energy savings in centrifugal applications. If you only need a gentle start, use a soft starter. If you need speed control at any point during operation, invest in a VFD.
- PLCs are purpose-built for industrial environments — they tolerate heat, vibration, and electrical noise while executing control logic in deterministic millisecond scan cycles. They replace hardwired relay logic with reprogrammable software, making process changes fast and inexpensive. Built-in diagnostics centralize fault visibility and cut troubleshooting time. Modern PLCs integrate with HMIs, SCADA, and enterprise networks via standard protocols, enabling real-time data collection. Modular architecture means the system scales as the application grows.
- Start with the NEMA or IP rating: NEMA 1 for basic indoor use, NEMA 4/4X for washdown and outdoor exposure (4X adds corrosion resistance), NEMA 7/9 for hazardous classified locations. Size the enclosure with 20–30% spare interior space for future additions and adequate heat dissipation. Choose material based on environment — painted steel for standard indoor use, stainless for washdown or chemical exposure, fiberglass for highly corrosive areas. Verify any required certifications (UL, CSA, ATEX) before specifying.
- Solenoid valves are electrically actuated and can be triggered instantly by a PLC or control system, making them essential for automated, repeatable, or high-cycle applications. Manual directional control valves require a person to physically shift the valve and are appropriate for infrequent operations, manual overrides, or applications with no control system. In practice, most automated systems use solenoid valves for normal operation with a manual override built in for setup, maintenance, and emergency use. If the valve must respond to a signal, cycle repeatedly, or operate unattended, solenoid is the correct choice.