VAF Instruments Eurotherm 3504 Advanced Process & Fuel Viscosity Controller

VAF Instruments Eurotherm 3504 Advanced Marine Process Controller

Maintain absolute precision over your vessel’s fuel conditioning modules and engine room analytics with the VAF Instruments Eurotherm 3504 Controller. This high-precision, 1/4 DIN process controller is customized to interface directly with VAF viscosity sensors, fuel flowmeters, and torque systems—ensuring heavy fuel oil (HFO) is heated to the exact injection viscosity required by the main propulsion engines.

The high-isolation outer case features a comprehensive wiring configuration blueprint outlining the unit’s intricate hardware mapping blocks. The terminal matrix is designed to manage complex analog input values (such as 4-20mA or PT100 temperature/viscosity probe readouts) alongside high-integrity digital control steps:

• Main Electrical Feed Blocks (HA, HB, HC): Runs on universal line ratings spanning 100–240VAC (-15%/+10%) at 48–62Hz, drawing a highly efficient maximum load.

• Digital I/O Ports (HD to HF): Integrates discrete contact closure inputs with an isolated common ground for remote emergency shut-down or loop-hold sequencing.

• Precision Relay Contacts (JA to JC): Includes heavy-duty onboard alarm contacts rated up to 2A 240VAC Resistive with both Normally Open (NO) and Normally Closed (NC) dry paths to safely toggle booster heaters or activate bridge sirens.

Detailed Ordering & Configuration String Breakdown:

As verified on the factory asset label (3.jpeg), the unit is built to a highly specialized code matrix indicating a premium module expansion array layout:

• 0-25 cst Relay Factory Mark: Hand-signed calibration index confirming the unit is pre-tuned for a 0 to 25 centistokes (cSt) kinematic viscosity measurement scale—the gold standard metric required for safe marine diesel engine fuel delivery modules.

• Made in UK Pedigree: Manufactured to exacting European maritime standards at the Euroterm BV facility.

Technical Specifications:

• Brand: Eurotherm by Invensys / VAF Instruments Custom Lot

• Model Base Identifier: 3504 / Process Control Equipment

• Configuration String: 3504/CC/VH/X/XX/1/1/XXX/S/RR/XX/AM/D6

• System Serial Identification: NT31034-1-13-3411-FC

• Customer Part / Reference Indexes: CustPart: 0650-1039 | CustRef: 35271*100111363

• Line Power Consumption: 100–240V AC, 48–62 Hz, 20 Watts Max

• Measurement Standard: Measurement Category II / Status Level R4

• Logic Output Relay Thresholds: 2A 240V AC Resistive / Logic 10mA 18V DC Max

• Enclosure Form Factor: Standard 1/4 DIN flush panel mount panel sleeve with multi-tier rear screw terminal arrays (5.jpeg)

• Target Marine Systems: VAF Viscotherm Fuel Conditioning Systems, Booster Module Control Racks, Main Engine Fuel Oil Viscosity Loops, Heavy Fuel Oil (HFO) Steam Valve Automation Panels