Honeywell LCNP4M Smart Gauge Pressure Transmitter

Description

Honeywell LCNP4M Smart Gauge Pressure Transmitter

Product Dimensions：

Honeywell offers world-class Smart Gauge Pressure Transmitters primarily within its highly regarded SmartLine® family, featuring the STG700 and STG800 series. These transmitters are engineered to measure the gauge pressure of liquids, gases, or steam in demanding industrial environments and convert it into a standard electronic output signal.

Product Detailed Description

A Honeywell Smart Gauge Pressure Transmitter utilizes advanced piezoresistive sensor technology. This sensor integrates pressure measurement with onboard temperature compensation, ensuring high accuracy and stability even under fluctuating process conditions.

The modular design allows the electronics module, indicator (alphanumeric or advanced graphics LCD), and terminal block to be replaced or upgraded in the field without affecting the pressure boundary or factory calibration.

Typical Technical Parameters

Specifications below represent the high-performance STG800 and standard STG700 series.

Product Advantages

• Modular Architecture: Minimizes lifecycle costs. If a display or communication protocol needs to be changed (e.g., from HART to Foundation Fieldbus), only the specific plug-in module needs replacement.
• SmartLine Connection Advantage: When used with Honeywell’s Experion® PKS, the system provides unique capabilities like “Transmitter Messaging” (displaying maintenance notes directly on the transmitter screen from the control room).
• Dual-Seal Design: Certified to ANSI/ISA 12.27.01, providing inherent safety by preventing process fluid from entering the electrical conduit without requiring an external secondary seal.
• Polarity Insensitivity: Wiring terminals are designed so that the transmitter will not be damaged and will operate correctly even if the positive and negative power loops are accidentally reversed during installation.

Important Considerations & Precautions

• Impulse Piping Layout: For gas measurements, mount the transmitter above the process tap to allow condensed liquids to drain back into the process line. For liquid or steam measurements, mount it below the tap to ensure the impulse lines stay filled with fluid and remain free of air pockets.
• Vent/Drain Valves: Always utilize a standard 2-valve, 3-valve, or 5-valve manifold during installation to allow safe isolation, venting, and calibration of the transmitter without shutting down the entire process line.
• Conduit Seals: Ensure the cable entries are properly sealed with approved explosion-proof or flameproof glands to maintain the hazardous area explosion-proof certification (ATEX/IECEx/FM).
• Zero Trim: After physical installation, perform a “Zero Trim” calibration to eliminate any mounting position effects or hydrostatic head errors caused by the weight of the fluid in the impulse lines.

Product Applications

• Oil & Gas Downstream: Monitoring wellhead pressure, pipeline pressures, and compressor station delivery lines.
• Chemical & Petrochemical: Gauge pressure tracking in distillation columns, reactors, and chemical storage spheres.
• Power Generation: High-pressure monitoring of main steam lines, boiler feed-water loops, and cooling water systems.
• Pulp & Paper: Regulating hydraulic system pressures and monitoring tank blankets.
• Water Treatment: Tracking discharge pressure on high-capacity distribution pumps.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

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