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DESCRIPTION

The Fireye 65UV5 flame scanner is a microprocessor based flame scanner utilizing an ultraviolet

tube-type sensor and an electro-mechanical self-checking shutter mechanism. The Fireye 65UV5

flame scanner incorporates an internal flame relay with a fixed ON/OFF threshold thereby eliminat-

ing the need for an external flame amplifier.

The 65UV5 scanner is available with a one-second or four second flame failure response time

(FFRT) depending on the model selected. The “E” versions are one second FFRT, the non-”E”ver-

sions are four seconds FFRT. The Fireye 65UV5-1004, -1004E flame scanner provides an analog 4

to 20mA output referenced to flame signal strength.

The Fireye 65UV5 flame scanner is powered from a 24 vdc power source provided externally and

includes an integral 10-foot (3 meter) cable. A color-coded internal LED indicates flame status and

alarm condition. This can be viewed through a viewing port on the rear cover.

The 65UV5 housing has a NEMA 4X / IP66 rating. The unit is suitable for use in Class 1, Div. 2 haz-

ardous environment groups A, B, C & D or Ex II3 G/D EExnA IIC T4A.

65UV5 CEX models are wired directly via a terminal rail located within the CEX housing. Suitable

glands must be used to terminate the cable at the housing.

The 65UV5-1000, -1000E scanners will become obsolete in 2008, to be replaced by the enhanced

capability of the 65UV5-1004 and -1004E scanners.

APPLICATION

Fireye 65UV5 self-checking scanners are used to detect ultraviolet emissions from fossil fuel flames

such as natural gas, coke oven gas, propane, methane, butane, kerosene, light petroleum distillates

and diesel fuels.

PRINCIPLE OF OPERATION

The 65UV5 scanners use a UV-eye detector. This detector is a sealed, gas filled, UV-sensitive tube

containing two electrodes connected to a source of DC voltage. When UV radiation of sufficient

energy falls upon the electrodes, electrons are released and the inter-electrode gas becomes conduc-

tive, resulting in an electric current flow from one electrode to the other. The current flow starts and

ends abruptly and is known as an “avalanche.”

A very intense source of UV radiation will produce several hundred avalanches or pulses per second.

With less radiation there will be fewer pulses per second. Upon total disappearance of flame, the

detector output ceases. Thus, the presence or absence of pulses is an indication of the presence or

absence of flame; the frequency of the pulses is a measure of flame intensity. When the pulses reach

a sufficient level, the internal flame relay is energized.

65UV5 Simplicity

Integrated Flame Scanner

with Internal Flame Relay

CU-104

JULY 7, 2009

1 2 3 4 5 6 ... 15 16

Résumé du contenu

Page 1 - Integrated Flame Scanner

1®DESCRIPTIONThe Fireye 65UV5 flame scanner is a microprocessor based flame scanner utilizing an ultraviolettube-type sensor and an electro-mechanical

Page 2 - SPECIFICATIONS TABLE

10®65UV5-1004 (CEX)SELF-CHECK SHUTTER OPERATIONThe 65UV5 self-check shutter mechanism is a powered-open, powered-closed device (no returnspring). The

Page 3

11®FIGURE 10.ALIGNMENT AND ADJUSTMENTThe following procedures are recommended to ensure optimum flame detection and discrimination.Flame discriminatio

Page 4 - SPECIFICATIONS (CEX MODEL)

12®Start an adjacent burner and vary its firing rate under normal airflow conditions. Make certain thatthe main flame scanner on the burner not in ser

Page 5 - INSTALLATION

13®FIGURE 11.MAINTENANCE1. The control and scanner should be powered at all times (except for repair, cleaning or replace-ment) to reduce any harmful

Page 6 - FIGURE 5

14®Note: There is an inverse relationship between discrimination and sensitivity.FIGURE 12.FIGURE 13.UV TUBESHUTTER SECURING SCREWSSHUTTERSHUTTERCONNE

Page 7 - SCANNER WIRING

15®FIGURE 14.FIGURE 15.ACCESSORIESFIGURE PART NUMBERDESCRIPTION14A 53-121-2 Orifice .062” Diameter14B 53-121-3 Orifice .078” Diameter14C 53-121-4 Orif

Page 8 - 65UV5- 1004, -1004E SCANNER

16®NOTICEWhen Fireye products are combined with equipment manufactured by others and/or integrated intosystems designed or manufactured by others, the

Page 9 - SCANNER WIRING - CEX VERSIONS

2®FEATURESThe components are contained in a cast aluminum NEMA 4X/IP66 housing sealed with an oil-resis-tant gasket. The quartz lens is a planoconvex

Page 10 - INDICATION LEDs

3®SPECIFICATIONS (non CEX versions)MECHANICAL:Housing Material: Cast aluminum with black polyester powder coat finishHousing Weight: 4 lbs (2kg)Envir

Page 11 - ALIGNMENT AND ADJUSTMENT

4®SPECIFICATIONS (CEX MODEL)FIGURE 2. SIMPLICITY SCANNER in CENELEC HAZARDOUS AREA HOUSING (mounting flange kit ordered separately)NOTE: All models of

Page 12

5®INSTALLATIONThe best scanner sighting results are obtained when the scanner is aimed so that its line of sight inter-sects the burner center line at

Page 13 - MAINTENANCE

6®4. Mount scanner sight pipe by either:— Centering a Fireye No. 60-1664-3 (NPT) or 60-1664-4 (BSP) swivel mount over the holeand installing the sight

Page 14 - FIGURE 13

7®FIGURE 6.SCANNER WIRINGNon-CEX versions of the 65UV5 scanner include an integral 10-foot (3-meter) cable. A four con-ductor cable is provided for th

Page 15 - ACCESSORIES

8®FIGURE 7. SCANNER WIRING FOR 1000 AND 1000E SCANNER VERSIONSFIGURE 8. SCANNER WIRING FOR 1004 AND 1004E SCANNER VERSIONS65UV5-1000 (E) SCANNERFLAMES

Page 16 - WARRANTIES

9®Note: When the older generations of 65UV5-1000 or -1000E scanners are used for a Class 1, Div. 2application, the cable gland MUST be removed and rep