FOXBORO B0132UE-H Pneumatic Indicating Controller

Description

FOXBORO B0132UE-H Pneumatic Indicating Controller

Product Dimensions：

Foxboro Pneumatic Indicating Controllers (most notably the flagship 43AP Series) are field-mounted pneumatic instruments designed to measure and control process variables such as pressure, temperature, flow, and liquid level without requiring external electrical power.

Product Detailed Description

The Foxboro pneumatic controller operates on a force-balance or motion-balance mechanism using compressed air or natural gas as its power medium. It continuously compares a process variable (PV) against a user-adjusted set point (SP). Internal pneumatic relays, flapper-nozzle systems, and feedback bellows compute proportional, integral, or derivative (P, PD, PI, PID) control actions to directly output a modulated 3 to 15 psi signal to a final control element (such as a control valve).

Key Technical Parameters

Product Advantages

• Intrinsic Safety: Completely pneumatic execution eliminates explosion risks in Zone 0/1 or Class I, Div 1 hazardous areas without expensive explosion-proof electrical conduit.
• Extreme Reliability: Mechanical force-balance components operate continuously for decades with minimal drift under harsh outdoor ambient conditions.
• Local Indication: High-visibility analog pointers display both the process variable and the set point on a single scale for quick operator inspection.
• Power Independence: Operates strictly on process gas or plant air, staying operational during total electrical blackout events.

Important Considerations & Precautions

• Air Quality Requirements: Supply air/gas must be strictly clean, dry, and oil-free (conforming to ISA S7.3 standards) to prevent clogging of fine nozzle orifices and restrictors.
• Calibration & Alignment: Adjusting proportional band, reset, or derivative actions requires trained technicians using calibration test gauges and fine mechanical alignments.
• Gasket & Diaphragm Aging: Elastomeric components (O-rings, relay diaphragms) degrade over time; routine inspection for air leaks is essential during scheduled turnarounds.

Typical Product Applications

• Upstream Oil & Gas: Wellhead pressure and temperature regulation in remote locations utilizing sweet natural gas as the instrument supply.
• Petrochemical & Refining: Control loops in hazardous units where electrical spark risks must be eliminated.
• Water & Wastewater: Level and pressure control on remote pumps and surge tanks.
• Boiler & Utilities: Steam pressure and feedwater control in harsh plant environments.

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

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