Fuji Electric FKC Differential Pressure Transmitter Manual

The Fuji Electric FKC Differential Pressure Transmitter is a precision instrument designed for accurate measurement of differential pressure in various industrial applications. It features high accuracy, robust construction, digital communication capabilities, and easy configuration. Below are key sections covering safety, specifications, installation, operation, calibration, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Wiring Connections 7. Operation and Calibration 8. Maintenance Procedures 9. Safety Information 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Pressure sensor unit, Electronics housing, Process connections, Display module, Communication ports.

Feature	Description
Measurement Range	0-100 mbar to 0-40 bar differential pressure
Accuracy	±0.1% of calibrated span
Output Signals	4-20 mA HART, Foundation Fieldbus, PROFIBUS PA
Process Connections	1/4" NPT, 1/2" NPT, G1/2, DIN 16288
Display	LCD with backlight for pressure and status
Materials	316L stainless steel wetted parts
Communication	HART protocol for configuration and diagnostics
Environmental Rating	IP67, NEMA 4X
Temperature Range	-40°C to +85°C process temperature
Power Supply	10.5 to 42 V DC

Installation

Unpack and inspect contents. Ensure proper mounting location.

Mounting: Use appropriate bracket; ensure proper orientation.
Process connections: Connect high and low pressure ports to process lines.
Electrical connections: Connect power and signal wires to terminal block.
Grounding: Ensure proper earth ground connection.
Commissioning: Apply power and verify basic operation.

WARNING! Ensure process is depressurized before installation. Follow local safety regulations.

First-Time Setup

Power on transmitter; follow configuration steps.

Basic configuration: Set measurement range, units, damping.
Output configuration: Configure 4-20 mA output scaling.
Display setup: Set display parameters and backlight timing.
Communication setup: Configure HART address if needed.
Calibration: Perform zero and span calibration if required.

CAUTION! Use only qualified personnel for configuration and calibration.

Specifications

Model: FKC Differential Pressure Transmitter
Accuracy: ±0.1% of span (typical)
Long-term Stability: ±0.1% of URL per year
Response Time: Adjustable from 0.1 to 32 seconds
Process Media: Liquids, gases, steam
Wetted Materials: 316L SS, Hastelloy C276
Electrical Connection: 1/2" NPT conduit
Weight: 1.5 kg (typical)
Certifications: CE, ATEX, IECEx, SIL 2/3
Warranty: 5 years

Controls and Settings

Access configuration via local buttons or HART communicator.

Local Controls: Two programming buttons for menu navigation and parameter setting.

Configuration Parameters: Measurement range, damping, output linear/square root, display units (kPa, bar, psi, inH2O, etc.), write protection, diagnostic settings. Advanced Settings: Sensor trim, characterization, alarm configuration, communication parameters.

Wiring Connections

Power and signal: Terminal block connections for power and 4-20 mA output.

Disconnect power before wiring.
Connect power supply: + to positive terminal, - to negative terminal.
Connect signal wires: Use shielded twisted pair cable.
Ground: Connect shield to earth ground at one end only.
Verify polarity and connection integrity.

Tip: Use proper cable glands and ensure IP67 rating maintained.

Operation and Calibration

Supports local and remote calibration procedures.

Zero calibration: Vent both pressure ports to atmosphere; perform zero trim.
Span calibration: Apply known pressure; adjust span calibration.
Characterization: Perform up to 5-point characterization if required.
Sensor trim: Fine-tune sensor performance.
Verification: Verify calibration against reference standard.

WARNING! Calibration should be performed by trained personnel using certified equipment.

Maintenance Procedures

Regular maintenance ensures optimal performance.

Visual inspection: Check for physical damage, corrosion.
Process connections: Verify tightness and integrity.
Electrical connections: Check for corrosion, proper grounding.
Performance verification: Compare against reference standard.
Cleaning: Use appropriate cleaning solutions for process connections.

CAUTION! Isolate from process and depressurize before maintenance.

Safety Information

Intrinsic Safety: Approved for use in hazardous areas. Pressure Limits: Do not exceed maximum working pressure. Electrical Safety: Follow local electrical codes.

Regulatory Information

CE Compliant: Meets European Union requirements. ATEX: II 1/2 G Ex ia IIC T4 Ga/Gb. IECEx: Ex ia IIC T4 Ga. SIL: Capable of SIL 2/3 applications. Copyright © 2024 Fuji Electric Co., Ltd. For technical support, contact local Fuji Electric representative or visit www.fujielectric.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No output signal	Power supply/wiring	Check power supply voltage; verify wiring connections; check fuses.
Erratic readings	Process conditions/wiring	Check for pulsations; verify proper grounding; inspect for moisture.
Zero drift	Temperature effects/aging	Perform zero calibration; check for process media condensation.
Communication failure	HART configuration/cabling	Verify HART communicator settings; check cable integrity and resistance.
Over-range indication	Process overpressure	Verify process pressure within range; check for plugged impulse lines.

Reset: Use reset function in configuration menu if available.

Service: Contact Fuji Electric technical support; www.fujielectric.com