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The Honeywell U2-101xS series model all-in-one viewing head with integrated signal processor delivers flame discrimination in the toughest environments. With automatic setup and the ability to monitor UV and IR flame components simultaneously or separately, the U2-101xS all-in-one flame scanner offers improved burner up time and reliability.
Industrial process burners, multiple burner system.
Touch screen user interface A tempered and fully sealed glass touch wheel sensor: no mechanical moving buttons.
Local display: LED display for flame signal monitoring onsite
Configuration menu is locked to avoid accidental access automatically after a few minutes of inactivity. To unlock, make 1 full 360 turn with the finger around the touch screen window.
Power supply 24 Vdc | 2.6 VA 
Protection class
NEMA 4x, IP66
Zone 2 Class 1 Div 2 Group A, B, C and D
U2-101xS: II 3G Ex nA nC T5 Gc
U2-101xS-PF: II 2G Ex d IIC T6 Gb / 2D Ex d tb IIIC T85 Db
Ambient temperature -40 ... 70 oC
Maximum humidity 85 %rh
Approvals
CE (EN298) for continuous operation (Europe).
CSA and FM (US)
IECEx and ATEX (explosion proof)
NCC/Inmetro (Brazil)
EAC (Russia)
KTL (Korea)
SIL 3 Capable
Housing (HxWxD) 117 mm | 117 mm | 155 mm 
Weight 2.8 kg
Output signal
4-20 mA (or 0-20 mA) with scale multiplier for remote meter or DCS and local display.
Relay outputs Wire flame and self-check relay contacts in serial to obtain fail-safe operation.
Flame relay: SPST - Normally Open
Self-check relay: SPST - Normally Open
End switch function/capacity 30 Vdc, 1 A (resistive)
Note
For "PF" models it is highly recommended to use a pipe coupler (see R-518-xx accessories), for easy mounting on to a viewing pipe.
Because Honeywell cable accessories are of USA origin, all cable lengths are measured in Ft (Feet, 1 Ft = 304.8mm)
Control model Flame switch
Outputs 2xSPST
Flame failure response time 1/2/3s selectable
Additional description
Sensor: UV Tube (UVTron), UV photo diode (UVss), IR sensor or a combination of these three sensors
Response (peak): 210 nm (UVTron), 310 nm (UVss), 1400 nm (IR)
Technology: Flicker (UVss and IR), Pulse Count (UVTron)
100% immunity for X-Ray and Gamma radiation
Self-check (Electronic shutter): internal processor monitors tube health
All-in-one flame scanner: no additional wiring cabinet needed
Remote communication: Modbus RTU (2 wire RS485 compatible)
7 files for different configuration, that can be selected by applying or removing a voltage on the dedicated terminal (where FILE 0 is selected < 16Vdc and FILE X > 21Vdc) which this allows smooth file transition possible on mixed fuel burners. File 1..7 are selectable via the Modbus connection.
U2-S cable connector models. For general use and Zone 2. Excluding cable, connector, PT adapter and air purge coupler.
u2s-be04
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U2S
Product descriptionCommentFlame detectorTypeDownloads
    TXTPDF
Triple flame sensor.3G Ex nA nC T5UVTron+UVSS+IRU2-1010S TXT
PDF
Installation/mounting instruction (English) Application manual (English) Application manual (German) Application manual (French) Application manual (Portuguese) Brochure (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English)
Single flame sensor. 3G Ex nA nC T5IRU2-1012S TXT
PDF
Installation/mounting instruction (English) Application manual (English) Application manual (German) Application manual (French) Application manual (Portuguese) Brochure (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English)
Single flame sensor.3G Ex nA nC T5UVTronU2-1016S TXT
PDF
Installation/mounting instruction (English) Application manual (English) Application manual (German) Application manual (French) Application manual (Portuguese) Brochure (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English)
Dual flame sensor.3G Ex nA nC T5UVTron+IRU2-1018S TXT
PDF
Installation/mounting instruction (English) Application manual (English) Application manual (German) Application manual (French) Application manual (Portuguese) Brochure (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English)
U2-S models with factory mounted cable and 3/4" cable gland. For use in Zone 1. Excluding PT adapter and air purge coupler.
u2s-pf-be04
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U2S-PF
Product descriptionCommentFlame detectorTypeDownloads
    TXTPDF
Triple sensor . Cable length 10 Ft (3 m).Ex d IIC T6UVTron+UVSS+IRU2-1010S-PF TXT
PDF
Installation/mounting instruction (English) Application manual (English) Application manual (German) Application manual (French) Application manual (Portuguese) Brochure (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English)
Triple sensor. Cable length 50 Ft (15 m).Ex d IIC T6UVTron+UVSS+IRU2-1010S-PF-050 TXT
PDF
Installation/mounting instruction (English) Application manual (English) Application manual (German) Application manual (French) Application manual (Portuguese) Brochure (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English)
Triple sensor . Cable length 100 Ft (30 m).Ex d IIC T6UVTron+UVSS+IRU2-1010S-PF-100 TXT
PDF
Installation/mounting instruction (English) Application manual (English) Application manual (German) Application manual (French) Application manual (Portuguese) Brochure (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English)
Single sensor. Cable length 10 Ft (3 m).Ex d IIC T6IRU2-1012S-PF TXT
PDF
Installation/mounting instruction (English) Application manual (English) Application manual (German) Application manual (French) Application manual (Portuguese) Brochure (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English)
Single sensor . Cable length 10 Ft (3 m).Ex d IIC T6UVTronU2-1016S-PF TXT
PDF
Installation/mounting instruction (English) Application manual (English) Application manual (German) Application manual (French) Application manual (Portuguese) Brochure (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English)
Dual sensor. Cable length 10 Ft (3 m).Ex d IIC T6UVTron+IRU2-1018S-PF TXT
PDF
Installation/mounting instruction (English) Application manual (English) Application manual (German) Application manual (French) Application manual (Portuguese) Brochure (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English) Certificate (English)
Parts and accessories - 12 conductor C22S ITC/CIC approved cable for U2-S, with factory mounted R-518-10 connector

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U2S-ASYU2S
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ASYU2S
DescriptionAdditional Product TypeDownloads
 TXTPDF
Cable length 50 Ft (15m )ASYU2S TXT
Cable length 100 Ft (30 m)ASYU2S-100 TXT
Cable length 200 Ft (60 m)ASYU2S-200 TXT
Cable length 50 Ft (90 m)ASYU2S-300 TXT
12 Conductor cable with braided shield. Orderable in 1 Ft (30.48 cm) incrementals, minimum length is 15 Ft. C22S TXT
Parts and accessories - cable connector for U2-S
DescriptionAdditional Product TypeDownloads
 TXTPDF
Quick disconnect 12-pins Turck connector for U2-S "non-PF" models.R-518-10 TXT
Parts and accessories - pipe fitting accessories

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ISO-UNIT
iso-unitss-nl05
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ISO-UNITSS
m-701-2-nl05
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M-701-2
m-701-2-flg-nl05
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M-701-2-FLG
m-701-2-ss-nl05
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M-701-2-SS
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M-701-3
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M-701-3P
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M-701-4
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R-518-CL12-HTG
r-518-cl12-pg-nl05
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R-518-CL12-PG
r-518-cl13-htg-nl05
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R-518-CL13-HTG
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R-518-PT12
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R-518-PT12L
r-518-pt13-nl05
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R-518-PT13
DescriptionAdditional Product TypeDownloads
 TXTPDF
1" NPTF sealing union with quartz window and 1/2" NPTF purge portISO-UNIT TXT
1" NPTF stainless steel sealing union with quartz window and 1/2" NPTF purge portISO-UNITSS TXT
1" NPTF sealing union with quartz window and 1/2" NPTF purge port. High pressure version with 1/2" thick high pressure quartz windowISO-UNITHPGT TXT
Swivel mount, 2" pipe slip to 1" NPT female connection. Anodized aluminium.M-701-1 TXT
Swivel mount, 2" NPT female to 1" NPT female connection. Anodized aluminium.M-701-2 TXT
Flanged swivel mount, 2" flanged to 1" NPTFM-701-2-FLG TXT
Swivel mount, 2" NPT female to 1" NPT female. Stainless steel constructionM-701-2-SS TXT
Flanged swivel mount, 3-bolt, 4.5" flanged to 1" NPTFM-701-3 TXT
Swivel mount, 3" NPTF to 1" NPTF connectionM-701-3P TXT
Swivel mount, 2-bolt to 1" NPTF connectionM-701-4 TXT
Swivel mount bushing 1" x 1/2" NPT, 1/2" connectionM-701-5 TXT
1" NPT locking coupler with high temperature gasketR-518-CL12-HTG TXT
1" NPT aluminum locking quick disconnect/cam and groove coupler adapter with 1/2" NPT purge port. Used with U2 processor/viewing headsR-518-CL12-PG TXT
1/2" NPT locking coupler with high temperature gasketR-518-CL13-HTG TXT
1" NPT Ultem insulating locking coupler adapter. Used with U2 processor/viewing headR-518-PT12 TXT
1" NPT Ultem locking coupler adapter with quartz lensR-518-PT12L TXT
1/2" NPT Ultem locking coupler adapter onlyR-518-PT13 TXT
1/2" NPT Ultem locking coupler adapter with quartz lensR-518-PT13L TXT
Parts and accessories - programming and monitoring tools

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FLAMETOOLS-HMI
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FLAMETOOLS-PC
DescriptionAdditional Product TypeDownloads
 TXTPDF
Configuration colour touch screen display, with preinstalled Windows CE based configuration software and Modbus connection to connect 700xCSP, P222, P5xx and U2-S signal processorsFLAMETOOLS-HMI/U TXT
PDF
Operator manual (English)
Configuration software on USB key drive, incl. RS422/85 to USB converter moduleFLAMETOOLS-PC TXT
PDF
Operator manual (English) Installation/mounting instruction (English)
Parts and accessories - various parts

m-702-6-nl05
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M-702-6
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UV-SOURCE
DescriptionAdditional Product TypeDownloads
 TXTPDF
Replacement O-ring for ISO-UNIT, ISO-UNITSS and ISO-UNITHPGTISO-OR TXT
Replacement quartz window for ISO-Unit and ISO-UnitSSISO-QW TXT
Replacement retainer ring for ISO-UNIT, ISO-UNITSS and ISO-UNITHPGTISO-RR TXT
ISO-Union wrench set.ISO-WRENCH TXT
Orifice and retaining ring set. Used for all viewing headsM-702-6 TXT
High temperature gasket for 1" locking couplerPT-GA1 TXT
Quartz lens for 1" locking couplerPT-QL1 TXT
Ultra violet light source for UV sensor testing.UVSOURCE TXT