Product Details

The Fireye PS3487, also marked PS348-7, is a legacy piezoresistive pressure transducer built for older Fireye combustion control platforms. This piezoresistive pressure transducer converts process pressure into linear 1‑5 VDC analog output and transmits real‑time pressure readings to matched legacy burner controllers for combustion trimming and safety supervision. As a reliable 1‑5 VDC boiler sensor, it adopts a sealed pressure cell with stainless steel wetted components, resisting condensate and mild corrosion in boiler and process environments. This legacy Fireye pressure probe is widely used for steam and fuel gas pressure monitoring on retrofitted industrial burners and is stocked as genuine surplus replacement spare part for obsolete Fireye burner management systems.

Basic Parameters

Brand: Fireye

Model: PS3487 (PS348-7)

Type: Pressure transducer

Measuring range: 10 – 330 psig

Output signal: 1 – 5 VDC linear output

Sensing technology: Piezoresistive silicon element

Wetted material: Stainless steel

Compatible systems: Legacy Fireye analog combustion control assemblies

Accuracy: ±0.5% full scale typical

Status: Obsolete original unit, available as new old stock or tested surplus

Product type: Original Fireye combustion pressure transducer

Supported Functions

This transducer continuously measures process pressure and sends proportional voltage feedback to the host combustion controller. The control system uses this pressure signal to adjust burner firing rate, trigger high and low pressure safety interlocks, and stabilise fuel delivery for consistent combustion performance. It supports continuous pressure trending for boiler operational logging and routine performance verification.

Core Functions

The sealed sensing cell maintains stable readings under thermal cycling and mechanical vibration. The 1‑5 VDC analog output is designed for older analog control circuits. Its compact threaded body fits standard pressure tapping points, and it serves as direct drop‑in substitution for existing PS3487 / PS348-7 transducers.

Hardware Specifications & Environmental Features

Mounting: Threaded process connection

Operating temperature: -20 °C to +85 °C

Storage temperature: -40 °C to +85 °C

Relative humidity: 5% – 90%, non‑condensing

Housing: Rugged metal sensor assembly

Condition: New old stock or fully tested refurbished Fireye transducer

Industry Applications: Applied in legacy petrochemical distributed control, old paper making production automation, material handling conveyor lines, packaging and textile machinery, water treatment remote signal collection and large conveyor remote I/O control racks.

Note: Confirm pressure range, 1‑5 VDC signal requirement and legacy controller compatibility before ordering; this transducer is discontinued and cannot directly replace 4‑20 mA PXMS series sensors.

This is from our current stock.

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