Technical Specifications Model: D674A905U01 Compatible Device: ProcessMaster 300, HygienicMaster 300 flowmeter transmitter Communication Protocol: HART 7.0 Power Supply: Derived from flowmeter transmitter internal circuit, 24 V DC loop‑power Current Consumption: 30 mA maximum Mounting Type: Internal plug‑in cartridge inside transmitter housing Operating Temperature: ‑20 ℃ to +60 ℃ Storage Temperature: ‑40 ℃ to +85 ℃ Relative Humidity: 5‑95 %, non‑condensing Protection Class: IP20 inside transmitter enclosure Certifications: CE
Functional Features Provides standard HART 7.0 digital communication interface for compatible ABB flow transmitters. Supports remote reading of flow rate, totalizer value and process measurement variables. Realizes remote instrument parameter configuration, range setting and calibration operation. Uploads internal device diagnostic status, fault alarm and self‑check information to host system. Plug‑in cartridge design allows replacement without full transmitter disassembly. Adopts signal isolation circuit to suppress industrial site electromagnetic interference. Works together with 4‑20 mA analog loop signal without disrupting analog measurement output.
Application Scenarios ProcessMaster 300 and HygienicMaster 300 electromagnetic flowmeter spare‑part replacement. Chemical industry, water treatment, food‑beverage industry flow measurement instrument HART communication expansion. Industrial site requiring remote configuration and diagnostic maintenance for flow transmitters.
Installation Requirements Power off the flowmeter transmitter before cartridge replacement work. Open transmitter electronic housing cover, align D674A905U01 cartridge with internal slot anti‑mis‑insertion key, fully insert into position. Confirm gold‑plated contact pins make reliable contact with mainboard socket. Reassemble transmitter housing and fasten housing screws to specified torque. Complete power‑on self‑check of flow transmitter, verify HART communication link status via host HART tool. Ambient operating temperature shall keep within ‑20 ℃ ~ +60 ℃ without condensation.
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