EN15714-2 Classificazione degli attuatori elettrici di controllo (Duty)

Control Duty Classifications: Class A: ON-OFF Type (On/Off) Function: The actuator is required to drive the valve through its entire stroke from fully open to fully closed (and vice versa). Typical Use: Applications where valves are either fully open or fully closed. Class B: Fine-Tuning/Positioning Adjustment Type Function: The actuator occasionally moves the valve to […]

Quando scegliere un attuatore di controllo di processo?

Application Background of Process Control Actuators In many process control systems, it is necessary to achieve highly accurate and consistent control of the flow rate of liquids or gases through an automated control system (PLC/DCS). Due to the high precision required, such systems often need to make continuous and precise small adjustments to control valves […]

Test di interferenza elettromagnetica per attuatori elettrici (EFT)

The Increasingly Harsh Electromagnetic Environment in Industrial Sites As industrial electrification and intelligence continue to advance, an increasing number of high-power electrical devices (such as kilowatt-level motors, frequency converters, and inverters) are being integrated into industrial process control systems. Consequently, the electromagnetic environment in industrial sites is becoming more complex. In such a challenging electromagnetic […]

The Development Trends of Digitalization and Networking in Electric Valves

RotorkRotork talks about digitalization of electric valves Rotork talks about the digitalization of electric valvesRotork recently discussed the importance of digitalization to valve automation and control in the European Control Engineering magazine. Industrial Internet of Things (IIoT) technology uses electronic devices such as sensors to collect and share data, and uses the computing power of […]

DCL Wuhan Huayi Intelligent Control will participate in the 20th International Chemical Industry Exhibition

DCL participated in the 20th International Chemical Industry Exhibition, showcasing their electric actuators, IoT-based actuator applications, and embedded fluid control solutions for the chemical industry. Exhibition Details: Dates: September 4th to 6th, 2023 Venue: Shanghai New International Expo Centre Booth: N5H03 The event was an excellent opportunity for experts in the chemical industry to explore […]

Tipi comuni di valvole e loro caratteristiche

Butterfly Valve Working Principle: A butterfly valve uses a disc to control the flow of fluids or gases. The disc is mounted on a shaft, and when the handle is turned, the disc rotates 90 degrees to allow or block the flow. Features: Simple structure, compact size, low flow resistance, commonly used in large flow […]

Valori di protezione dell'involucro (UL, CSA, NEMA)

The protection ratings for enclosures defined by UL, CSA, and NEMA are categorized as follows. While the classifications are generally similar, there are minor differences in the details, so it is advisable to refer to the specific standards for more precise information. Type Classification Definition 1 General For indoor use, providing protection for enclosed components […]

Attuatore con grado di protezione IP da polvere e acqua

IP Protection Rating DefinitionThe IP (Ingress Protection) rating defines the protection level of a product’s enclosure against the intrusion of solid objects (such as tools, fingers, dust, etc.) and the ingress of water (from condensation, washing, immersion, etc.). The two digits following “IP” indicate the protection levels for solid objects and water intrusion. The first […]

Come funzionano gli attuatori con funzioni bus - Modbus, CAN, Ethernet, Profibus

 When you install a DCL electric control valve with bus functionality on a pipeline, you can control a set of electric control valves through the bus (Modbus, CAN, Ethernet, Profibus) to achieve synchronized control of the valve cluster. The control system communicates with the actuator via a bus communication protocol, sending commands to control the […]

Certificazioni degli attuatori DCL

The DCL electric actuator complies with the following certifications: CE – Conformité Européenne (European safety and environmental standards) RoHS – Restriction of Hazardous Substances CSA – Canadian Standards Association certification IAF – International Accreditation Forum CNAS – China National Accreditation Service SIL – Safety Integrity Level certification Exd II CT4 Gb – Explosion-proof certification for […]