echnical Parameters General Model: FIELDVUE DVC7K Digital Valve Controller Type: Microprocessor-Based, Digital Valve Positioner Communication Protocols: HART 7, HART 5 (backward compatible), and 4-20 mA Analog. Input Signal Analog Control Signal: 4 to 20 mA DC, two-wire connection. Input Impedance: 7.5 ohms at 20 mA (HART communication), 4.5 ohms (analog only). Pneumatic Performance Supply Pressure Range: 1.4 to 10.0 bar (20 to 150 psig) Output Pressure Range: Equal to supply pressure (minus minor internal losses). Air Delivery Capacity (Volume Boost): High Flow: Up to 100 SCFM (170 Nm³/hr) for fast stroking of large actuators. Standard Flow: Sufficient for most standard applications. Air Consumption (Static): Typically less than 0.02 SCFM (0.03 Nm³/hr). Control & Performance Tight Shut-Off (TSO) Capability: Yes, with automated calibration. Strobe Capability: Allows partial valve stroke testing during normal operation. Stability & Accuracy: Very high stability with minimal deadband, providing precise positioning accuracy. Environmental Ambient Temperature Range: Standard Electronics: -40° to 85°C (-40° to 185°F) Extended Temperature Electronics: -50° to 80°C (-58° to 176°F) Relative Humidity: 0 to 100% condensing. Enclosure Rating: NEMA 4X / IP66 (Weatherproof, Dust-tight, and Hose-proof). Electrical Loop Power: Powered directly from the 4-20 mA signal loop (Two-wire device). Intrinsic Safety: Approved for use in hazardous areas. Local User Interface (LUI): Backlit graphical display and pushbuttons for local configuration, calibration, and diagnostics without a hand-held communicator. Physical & Mounting Mounting: Directly mounts to Fisher rotary (e.g., 1052, 1066) and most linear actuators. Adaptable to many other valve brands using Fisher mounting kits. Housing Material: Aluminum with a corrosion-resistant coating. Weight: Approximately 2.5 kg (5.5 lbs). Diagnostics & Alerts Monitored Parameters: Valve travel, actuator pressure (single or dual), supply pressure, output torque (estimated), device temperature, and total travel cycles. Alerts: Provides early warnings for issues such as high friction, air supply failure, low actuator pressure, and packing wear.