Fisher DVC6200 Series Smart Digital Valve Positioner HART 4-20mA for Control Valves

Product Overview

The Fisher DVC6200 is a HART communicating digital valve controller that converts a two-wire 4-20 mA control signal into a pneumatic output to an actuator. It retrofits easily in place of existing analog positioners on most pneumatic actuators. The linkage-less, non-contact position feedback system eliminates physical contact between the valve stem and the DVC6200, so there are no wearing parts — cycle life is maximized. Fully encapsulated electronics resist vibration, temperature swings, and corrosive atmospheres.

Technical Specifications

Application Industry

The DVC6200 has proven itself in refining, chemical, nuclear, oil and gas, power, pulp and paper, food and beverage, water and wastewater, pharmaceutical, and metals and mining industries. It handles process control for flow, pressure, temperature, and level applications.

Common Problems

• Instrument will not communicate: Check power supply, terminal voltage (should be 9–32 VDC), and wiring connectors on the printed wiring board.

• Valve does not stroke from 0 to 100%: Verify pneumatic connections and supply pressure; check that function block is in the correct mode.

• I/P converter output out of spec: May indicate a defective module base seal, defective relay, or a faulty 67CFR regulator.

Replacement Models

The DVC6200 is designed to retrofit existing analog positioner installations. It is a common upgrade from older DVC2000 units. For other brands, verify mounting, travel range, and communication protocol before ordering.