Description
Fireye 85UVF1-1QD | Phoenix UV Flame Scanner | Burner Flame Supervision
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Fireye |
| Model | 85UVF1-1QD |
| Product Family | Phoenix 85UVF |
| Detection Principle | Solid-state ultraviolet flame detection |
| UV Range | 295–340 nm |
| Supply Voltage | 24 VDC nominal |
| Supply Tolerance | +20% / -15% |
| Supply Current | 200 mA |
| Electrical Connection | 8-pin quick-disconnect |
| Flame Output | SPST, normally open |
| Fault Output | SPST, normally closed |
| Relay Contact Rating | 2 A @ 30 VDC or 2 A @ 230 VAC, resistive |
| Analog Output | Optically isolated 4–20 mA |
| Maximum Analog Load | 750 Ω |
| Housing | Engineered GE Valox |
| Scanner Weight | Approx. 1.5 kg |
| Ambient Temperature | -40°C to +65°C |
| Internal Temperature Limit | 82°C |
| Protection | NEMA 4X / IP66 |
| Hazardous Area | Class I Division 2 approvals for the 1QD configuration |
| Cable | Fireye 59-546 series, 8-conductor QD cable |
The OEM bulletin specifies 24 VDC nominal input, 200 mA supply current, two discrete relay outputs, isolated 4–20 mA flame-strength feedback, and the 8-pin QD interface.
Product Introduction
The Fireye 85UVF1-1QD Phoenix is an integrated ultraviolet flame scanner intended for industrial combustion equipment. It detects the UV component of flame flicker in the 295–340 nm range and internally establishes flame ON/OFF thresholds, eliminating the need for a separate remote flame amplifier.
The scanner provides both discrete flame/fault indications and a 4–20 mA signal representing flame strength. Typical applications include industrial gas burners, duct burners, refinery equipment, low-NOx burners, waste-gas systems, and incinerators.
85UVF1-1QD
Application Scenarios & Field Pitfalls — Engineer’s Perspective
Engineering Pain Point
A flame scanner can be electrically healthy and still produce unreliable burner protection if its optical sighting is wrong. Flame geometry, pilot position, furnace loading, lens contamination, purge air, and scanner temperature all affect the quality of the flame signal.
Typical Applications
- Industrial gas burners — continuous flame presence monitoring.
- Boiler and duct burners — main flame and pilot supervision.
- Refinery and process heaters — burner-management flame detection.
- Waste-gas and incineration systems — UV flame monitoring where the target flame has adequate UV emission.
Technical Pitfalls to Avoid
- Do not confuse 85UVF1-1QD with the IRF versions.
The 85UVF1-1QD is a UV scanner operating over 295–340 nm. The corresponding IRF models use a different 830–1100 nm detection range. - The QD suffix matters.
The1QDconfiguration uses an 8-pin quick-disconnect connection and Fireye 59-546 series cables. It replaced earlier captive-cable versions, so verify the cable and connector arrangement before installation. - Do not substitute the scanner based only on voltage.
A 24 VDC flame detector with a similar mounting arrangement does not necessarily have the same spectral response, flame relay logic, fault behavior, or safety approvals. - Sighting must be commissioned under actual burner conditions.
Fireye specifically calls for reliable detection of both the intended flame and flame-off condition across the expected firing range. - Keep the optical path clean and control scanner temperature.
Fireye specifies purge/cooling air requirements and warns that contamination or excessive scanner temperature can affect detection and shorten service life.
Related Products
- Fireye 85UVF1-2QD — UV Phoenix scanner with fiber-optic mounting arrangement; not the same optical/mechanical configuration as the 1QD.
- Fireye 85UVF1-1QDK3 — UV scanner using the K3 optical filter configuration, extending the effective spectral response toward 500 nm for specialized applications.
- Fireye 85UVF1-1CEX — ATEX-oriented hazardous-area version with a different housing arrangement.
- Fireye 85IRF1-1QD — infrared Phoenix scanner rather than UV; detection range is 830–1100 nm.
- Fireye 59-546-3 — 3 m, 8-conductor QD cable.
- Fireye 59-546-6 — 6 m QD cable.
- Fireye 59-546-12 — 12 m QD cable.
- Fireye 35-318-1 — standard 1-inch NPT mounting flange for basic -1QD models.
- Fireye 35-318-2 — standard 1-inch BSP mounting flange for basic -1QD models.
Procurement Check
For a replacement 85UVF1-1QD, verify:
- Exact model: 85UVF1-1QD
- UV rather than IR sensor
- 24 VDC supply
- 8-pin QD connector
- Correct 59-546 cable
- Existing mounting flange and sight pipe
- Flame relay and fault relay wiring
- 4–20 mA signal wiring
- Hazardous-area classification
- Burner fuel and flame characteristics
- Required flame-failure response time
- Purge/cooling-air arrangement
- Existing burner-management-system logic
The 85UVF1-1QD should be specified as an integrated Fireye Phoenix UV flame scanner, not merely as a “UV sensor.” That distinction matters because the scanner contains its own flame-detection logic, flame relay, fault relay, diagnostics, and analog flame-strength output.
Procurement description:
Fireye 85UVF1-1QD Phoenix 85UVF Integrated UV Flame Scanner, 24 VDC, 8-Pin Quick Disconnect, 295–340 nm.
