Product Details

The Fireye UV1A50EX is a non self‑check ultraviolet flame scanner built with explosion‑proof housing for hazardous zone installation, derived from the UV1A series. This UV scanner uses a Geiger‑Müller UV tube to detect ultraviolet radiation from combustion flame and transmits pulse flame signals to compatible Fireye flame safeguard controllers. As a reliable flame sensor, it adopts two‑wire non‑polarity wiring and features a rugged sealed enclosure certified for explosive atmospheres. This Ex detector is widely used for gas burners in petrochemical plants and other classified hazardous locations and is stocked as genuine replacement spare part for industrial flame supervision.

Basic Parameters

Brand: Fireye

Model: UV1A50EX

Type: Non self‑check UV flame scanner, explosion‑proof

Sensor: Geiger‑Müller UV tube

Mount thread: 1/2 inch NPT

Wiring: Two‑wire, polarity free

Compatible control: Fireye MBCE, BurnerPRO, NXF4000 series

Supported fuels: Natural gas, propane

Max working pressure: Standard furnace pressure service

Approvals: Ex d IIC T6 explosion‑proof certification

Product type: Original Fireye hazardous‑area flame scanner

Supported Functions

This ultraviolet flame detector captures UV light emitted by burner flame and sends valid flame signal to the paired flame safeguard control. If the flame extinguishes, the flame signal disappears and triggers safety lockout and fuel shutoff. Without built‑in self‑check shutter, sensor integrity verification relies on the host burner management system during each firing cycle.

Core Functions

The UV tube generates pulse signals under ultraviolet radiation from flame. Its explosion‑proof housing prevents ignition of surrounding flammable gas mixtures. The simple two‑wire layout simplifies field retrofit, and it can serve as a direct drop‑in replacement for existing UV1A50EX scanners on matching combustion systems.

Hardware Specifications & Environmental Features

Mounting: 1/2" NPT sight pipe

Operating temperature: -40 °C to +60 °C

Storage temperature: -40 °C to +70 °C

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

Housing: Cast aluminum explosion‑proof enclosure

Condition: Original new or fully tested refurbished Fireye spare part

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 amplifier compatibility, wiring length and hazardous‑zone certification before ordering.

This is from our current stock.

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