Honeywell Enraf SmartView 947 Tank Indicator

Honeywell Enraf SmartView 947 (Model VGDBAC 947 SV) Intrinsically Safe Tank Side Indicator

The Honeywell Enraf SmartView 947 (Model VGDBAC 947 SV) is an explosion-proof, intrinsically safe local readout and configuration terminal engineered for continuous liquid inventory and custody-transfer monitoring. Designed to survive aggressive offshore, terminal, and marine environments, this field indicator provides tank-bottom visibility for critical parameters measured by primary custody-transfer gauges—eliminating hazardous tank climbs while maintaining metrological validation.

Operating directly on an intrinsically safe two-wire loop from host instruments such as the Honeywell Enraf SmartRadar FlexLine (Series 990) or SmartServo (Series 954), the 947 SV extracts both operating power and bidirectional fieldbus communications simultaneously. Its robust chromate-free coated cast aluminum enclosure (<0.5% Mg) provides IP66/IP67 ingress protection against salt fog, sour crude vapors, and high-pressure hose-downs.

Model Details:

• Product Line: Enraf Tank Displays & Field Indicators
• Base Series: 947 SmartView
• Specific Model Code: VGDBAC 947 SV
• Manufacturing Part Number (MPN): 947-VGDBAC-SV (Configured SmartView Assembly)
• Internal Electronics Architecture: Two-wire digital FSK modulated baseband over current loop, low-power microprocessor execution unit with non-volatile EEPROM calibration storage.

Key Features

1. Loop-Powered Intrinsically Safe Architecture: Operates exclusively via the 2-wire intrinsically safe connection from the host gauge, eliminating external local power supplies and hazardous-area power conduits.
2. Through-Window Optical / Touch Interface: 5-key sealed membrane and optical sensor interface enables full diagnostic interrogation and field calibration without opening the housing in classified Zone 0/1 locations.
3. Marine-Grade Metallurgy: Marine-spec aluminum alloy housing protected by a dual-stage polyurethane finish, engineered to resist offshore galvanic corrosion and sulfurous atmospheric attack.
4. Custody-Transfer Level Approval: Meets international Weights & Measures standards (OIML R85, API MPMS Chapter 3) for authorized billing and inventory verification at ground level.

Applications

• Marine Tankers & Barges: Crude Oil Tankers (VLCC/Suezmax), Product Tankers, and Chemical Carriers requiring deck-level cargo tank gauging and pump monitoring.
• Refinery Tank Farms: Remote monitoring of intermediate, finished, and blending tanks containing volatile aromatics, gasoline, diesel, and heavy fuels.
• Bulk Liquid Storage Terminals: Commercial distribution terminals requiring custody-transfer certified local readouts for truck loading, rail transfers, and pipeline manifolds.
• LPG / LNG Pressurized Storage: Spheres and refrigerated bullet tanks operating in conjunction with high-pressure radar level gauges.
• Offshore Floating Facilities: FPSO, FLNG, and fixed production platform cargo, ballast, and slop tank monitoring.

Frequently Asked Questions

Can the Honeywell Enraf 947 SmartView display multiple tank parameters simultaneously?

Yes. The 64 × 128 pixel graphic LCD can display primary product level alongside average product temperature, vapor space temperature, and water bottom interface level when connected to a host gauge equipped with multi-channel VITO temperature probes.

Can I calibrate the host tank gauge directly from the 947 SmartView terminal?

Yes. The 5-button optical touch interface allows authorized operators to access configuration menus, set zero/span references, configure strapping table points, and conduct gauge test runs directly at the tank side without opening the flameproof or intrinsically safe enclosure.

Does the SmartView 947 require external 110V or 230V AC power?

No. The SmartView 947 is completely loop-powered. It draws operating current directly from the intrinsically safe 2-wire transmission line supplied by the host Honeywell Enraf SmartRadar or SmartServo gauge, simplifying installation and reducing wiring costs.

What is the difference between Model 947 SV and standard field indicators?

Unlike generic 4-20 mA analog indicators, the Honeywell Enraf 947 SV is a digital system component using native Enraf and HART communication layers. It transmits full diagnostic statuses, device alerts, and multi-variable metrological data with custody-transfer certification rather than simple scaled current loops.