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Brand: Fireye
Fireye 65UV5 Simplicity Integrated UV Flame Scanner
Description
A one-piece UV flame scanner with built-in flame relay and 4-20 mA signal
The Fireye 65UV5 Simplicity is a microprocessor-based ultraviolet flame scanner with an electro-mechanical self-checking shutter and an internal flame relay that has a fixed ON/OFF threshold, so no external flame amplifier is needed. It detects ultraviolet emissions from fossil-fuel flames such as natural gas, coke oven gas, propane, methane, butane, kerosene, light petroleum distillates and diesel fuels. Power is 24 Vdc from an external supply, a colour-coded LED shows flame and alarm status through a port on the rear cover, and an analog 4 to 20 mA output follows flame signal strength.
The scanner is offered with a one-second or four-second flame failure response time (FFRT) depending on the model. The 65UV5-1004QD-1 and -1004EQD versions are one second, and the 65UV5-1004QD versions are four seconds. The earlier 65UV5-1000 and -1000E became obsolete in 2008 and were replaced by the 65UV5-1004 and -1004E.
Technical specifications
| Parameter | Specification |
|---|---|
| Models | 65UV5-1004, -1004E, -1004QD, -1004QD-1, -1004EQD, -1004ECEX (CEX = ATEX housing with terminal rail) |
| Flame failure response time | 4 s: 65UV5-1004, -1004QD; 1 s: -1004E, -1004QD-1, -1004EQD, -1004ECEX |
| Threads | 1 inch sight pipe and 3/4 inch cooling air: NPT (1004, 1004QD, 1004QD-1) or BSP (1004E, 1004EQD, 1004ECEX) |
| Input power | 24 Vdc, +20 % / -25 %, 3.8 W (CEX models: 100 mA supply current) |
| Electrical connection | 8-pin quick disconnect connector (QD models); internal terminal rail (CEX models) |
| Relay outputs | Flame relay N.O./N.C. SPDT; fault relay N.O. SPST |
| Contact rating | Minimum 1 mA at 5 Vdc; maximum 2 A at 30 Vdc or 2 A at 240 Vac |
| Analog output | 4-20 mA dc referenced to 24 Vdc common, maximum connected load 750 ohm |
| Status indication | Internal LED: Flame Signal, Fault indication |
| Housing | Cast aluminum with black polyester powder coat, NEMA 4X / IP66; approx. 4 lb (2 kg); CEX housing approx. 6.6 lb (2.99 kg) |
| Hazardous classification | Class I Div 2 Groups A, B, C, D; Class II, III Div 2 Groups F and G; Ex II 3 G/D Ex nA IIC T4A; CEX models Exd IIC T6 ATEX |
| Temperature; humidity | -40 to +65 C (-40 to 150 F); 0 to 95 % RH non-condensing |
| Purge air | Clean, dry, cool; 4 SCFM (113 l/min) at the 3/4 inch connection or 1 inch Y fitting; up to 15 SCFM (425 l/min) near the upper temperature limit or with dirty fuels |
| Cable | Cable P/N 59-598 8-conductor, #18 AWG, shielded, PLTC-ER; assemblies 59-598-3 to 59-598-90 (3 to 90 m) |
| Approvals as printed | UL C/US (MCCZ.MP1537, MCCZ7.MP1537); FM 7610, FM 3611; EAC; CE (KIWA 0063BT1067) for E models; KOSHA for 1004ECEX |
| Functional safety | Fireye certifies the 65 Series Simplicity scanners as suitable for installations up to and including SIL2 |
Choosing the model and sighting the flame
Select the response time first: the four-second versions tolerate brief signal dips, and the one-second versions suit applications whose burner code requires fast flame failure response. Choose BSP or NPT threads to match the sight pipe and an E or CEX model where CE or ATEX marking is required. The quick-disconnect versions use cable assemblies sold separately in lengths from 3 to 90 m.
Aim the scanner so that its line of sight crosses the burner centre line at a slight angle and sees the pilot and the base of the flame envelope, where UV radiation is strongest. Keep the viewing window clean with continuous purge air, and use an orifice disk if the signal is excessive. Related flame monitoring equipment is listed under burners and gas trains and flame detection; see also the LAMTEC BurnerTronic BT300 burner control system.
Documents and quotation
The attached Fireye bulletin CU-104 (March 2022) is the manufacturer description and installation sheet for the 65UV5 Simplicity scanner. Send the full model number, thread type, response time, hazardous-area marking and cable length for a quotation, and confirm the exact model and approvals before ordering.
Datasheets & Documents
- Datasheet Fireye 65UV5 Simplicity integrated flame scanner bulletin CU-104 (March 2022) Download
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About brand
Fireye is a manufacturer of flame safeguard controls and burner management systems for commercial and industrial applications, headquartered in Derry, New Hampshire, USA. Its products are used in public buildings, power plants, pulp and paper mills, petrochemical facilities and food processing plants. Seven Star LLC is an independent supplier in Muscat and lists Fireye flame scanners and burner controls for boiler, heater and furnace buyers in Oman and the GCC.
Fireye flame scanners and burner controls
The range covers UV, IR and dual-sensor flame scanners (including the 65UV5 Simplicity, InSight and Phoenix integrated scanners), flame safeguard controls such as BurnerLogix, BurnerPRO and MicroM, and Nexus combustion controls for fuel-air ratio and parallel positioning control, as printed on the manufacturer data sheets.
Ordering Fireye equipment: what we need
Send the exact model and engineering code, the control or scanner it must match, the supply voltage, the fuel and burner type and any hazardous-area marking. We check the model against the current Fireye data sheet before quoting.
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Frequently Asked Questions
An integrated ultraviolet flame scanner with a self-checking shutter and an internal flame relay, so it needs no external flame amplifier.
Four seconds for 65UV5-1004 and -1004QD; one second for -1004E, -1004QD-1, -1004EQD and -1004ECEX.
24 Vdc, 3.8 W, with a flame relay, a fault relay and a 4-20 mA flame signal output into up to 750 ohm.
Class I Div 2 Groups A to D, Ex II 3 G/D Ex nA IIC T4A, and Exd IIC T6 ATEX for the CEX housing models.
Natural gas, coke oven gas, propane, methane, butane, kerosene, light petroleum distillates and diesel fuels.

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