Name: DVC2000 Digital Valve Controller | Qiming Automation
Brand: EMERSON
Price: 44500.00 CNY
Availability: InStock

Description

The DVC2000 is a state-of-the-art digital valve controller, meticulously engineered to provide precise and reliable control of control valves in industrial automation systems. As part of Emerson’s renowned family of valve automation solutions, it seamlessly integrates with control valves, positioners, and higher-level control systems, ensuring efficient and accurate fluid flow control.

This controller acts as the interface between the control system (such as a DCS or PLC) and the control valve, translating electronic control signals into precise mechanical movements of the valve stem.

DVC2000

What sets the DVC2000 apart for engineers and system integrators is its advanced digital technology, which offers superior accuracy, repeatability, and diagnostic capabilities compared to traditional analog positioners. It can be easily configured to work with a wide range of control valve types, including globe valves, butterfly valves, and ball valves, making it highly versatile. The DVC2000 fits into system architectures by providing real-time valve position feedback to the control system, enabling closed-loop control and ensuring that the valve operates exactly as commanded. Its compatibility with industry-standard communication protocols like HART and Foundation Fieldbus allows for seamless integration into existing control networks, facilitating remote monitoring, configuration, and troubleshooting.

DVC2000

Main features and advantages:

TheDVC2000 boasts several key technical features that make it a standout in valve control. One of its most notable features is its high positioning accuracy, with a repeatability of ±0.1% of full scale. This ensures that the valve position remains consistent even after repeated operations, which is essential for maintaining stable process conditions. The controller also features advanced diagnostic capabilities, continuously monitoring valve performance parameters such as stem position, actuator pressure, and friction. It can detect issues like valve sticking, seat wear, or actuator leaks, providing early warnings to maintenance teams and helping to prevent unplanned downtime.

In terms of hardware design, the DVC2000 is built to withstand the harshest industrial environments. It has a rugged enclosure with an IP66/IP67 rating, making it resistant to dust, water, and corrosion. This allows it to be installed in outdoor locations or in areas with high humidity and chemical exposure, such as offshore oil platforms or chemical processing plants. The controller operates over a wide temperature range, from -40°C to +85°C, ensuring reliable performance in extreme thermal conditions. It also features a modular design, with easily replaceable components, making maintenance quick and cost-effective.

DVC2000

Technical specifications:
Model DVC2000
Brand Emerson
Type Digital Valve Controller
Power Supply 24V DC (loop-powered)
Input Signal 4-20 mA DC with HART communication
Output Signal 4-20 mA DC (valve position feedback)
Positioning Accuracy ±0.1% of full scale
Repeatability ±0.1% of full scale
Operating Temperature Range -40°C to +85°C
Storage Temperature Range -50°C to +100°C
Enclosure Rating IP66/IP67
Communication Protocol HART, Foundation Fieldbus (optional)
Weight 1.5 kg
Dimensions 150mm x 100mm x 80mm (W x H x D)
Certifications ATEX, IECEx, UL, CSA

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DVC2000

Application areas:

In the intricate pipelines of oil refineries, where precise control of fluid flow is critical to maintaining optimal processing conditions, the DVC2000plays a vital role. Imagine a section of a refinery where crude oil is being transported to a distillation unit. The flow rate here needs to be adjusted constantly based on the pressure and temperature of the incoming crude. The DVC2000 takes signals from pressure and temperature transmitters, processes them, and precisely positions the control valve to maintain the desired flow rate. Even the smallest deviation in flow can affect the efficiency of the distillation process, leading to increased energy consumption or lower-quality end products.

In chemical processing plants, where corrosive and hazardous fluids are common, theDVC2000 ensures the safe and accurate operation of control valves. For example, in a plant producing fertilizers, the DVC2000 controls the flow of ammonia gas into a reaction chamber. It receives commands from the distributed control system (DCS) to open or close the valve, and with its high positioning accuracy, it can adjust the valve position to within 0.1% of full scale. This level of precision is crucial to prevent overfeeding of ammonia, which could lead to dangerous pressure buildups or chemical spills. Across industries such as oil and gas, chemical, and power generation, the DVC2000 addresses the challenges of valve control in harsh environments with high pressure, extreme temperatures, and aggressive media.

Related products:

DVC2000-FF – A variant of the DVC2000 with Foundation Fieldbus communication protocol, ideal for integration into large-scale Foundation Fieldbus networks.

DVC2000-IS – An intrinsically safe version of the DVC2000, designed for use in hazardous areas classified as Zone 0/1 (gas) and Zone 20/21 (dust), ensuring safe operation in explosive atmospheres.

V1000-GLOBE – A globe control valve optimized for use with the DVC2000, offering excellent flow control characteristics in liquid and gas applications.

V2000-BUTTERFLY – A butterfly control valve that pairs seamlessly with the DVC2000 for high-flow applications in water treatment and HVAC systems.

CAB-HART-10M – A shielded HART communication cable designed for reliable data transmission between the DVC2000 and the control system, minimizing electromagnetic interference.

TOOL-CALIB – A calibration tool specifically designed for the DVC2000, enabling quick and accurate calibration of the valve controller.

ACC-MOUNT – A mounting accessory kit that facilitates easy and secure installation of the DVC2000 on various control valve types.

Installation and maintenance:

Before installing the DVC2000, ensure that the mounting surface on the control valve is clean, flat, and free from debris. The controller should be mounted in a position that allows easy access for configuration and maintenance, while also being protected from direct sunlight, extreme vibrations, and high-velocity fluid sprays. Check that the power supply is within the specified range (22-26V DC) and that the loop resistance is compatible with the controller’s requirements. When wiring, use shielded cables and connect the shield to the appropriate grounding point to prevent electrical noise from affecting the signal. Follow the manufacturer’s wiring diagrams to ensure correct connections between the controller, the control valve, and the control system.

For maintenance, perform regular visual inspections of the DVC2000 to check for signs of damage, corrosion, or loose connections. Inspect the enclosure seals to ensure they are intact and providing proper protection against dust and water. Use the controller’s diagnostic features to monitor valve performance parameters, such as position error, actuator pressure, and friction, on a monthly basis. If any anomalies are detected, perform further troubleshooting to identify and resolve the issue. Calibrate the DVC2000 annually using the recommended calibration tool to maintain its high positioning accuracy. Backup the controller’s configuration settings regularly to a secure location, and test the restore process to ensure that settings can be quickly recovered in case of a hardware failure or accidental reset.

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