Tag: FIREYE 85UVF1-1QD

Product Overview​

The FIREYE 85UVF1-1QD is a high-integrity dual-spectrum(ultraviolet+visible light,UV/Vis)flame detector engineered for critical industrial combustion systems—serving as the”safety sentinel”in sectors like oil&gas,power generation,petrochemicals,and chemical processing.Unlike single-spectrum flame detectors,it combines UV light detection(for identifying flame ignition and unstable combustion)with visible light analysis(for distinguishing true flames from false signals like sunlight or hot surfaces),ensuring accurate flame status recognition even in harsh,high-interference environments.​

What distinguishes the FIREYE 85UVF1-1QD from generic flame sensors is its robust hazard protection,rapid response,and wide application adaptability.Certified for ATEX Zone 1 and IECEx Zone 1 hazardous areas,it withstands explosive atmospheres(e.g.,hydrogen,methane)common in refineries and offshore platforms.With a response time of≤100ms for flame loss detection,it triggers emergency shutdowns(ESD)of fuel supplies within critical timeframes—preventing unburned fuel accumulation and potential explosions.Its rugged design(operating temperature:-40℃to+85℃,IP66 protection)and corrosion-resistant 316L stainless steel housing ensure durability in extreme conditions,from high-temperature boiler rooms to salt-mist-laden offshore facilities.For operators relying on FIREYE’s 80+years of combustion safety expertise,this detector is not just a monitoring tool,but a foundational element for complying with safety standards(e.g.,NFPA 85,API 556)and protecting personnel,equipment,and the environment.​

Technical Specifications​

​

Parameter Name​

Parameter Value​

Product Model​

FIREYE 85UVF1-1QD​

Manufacturer​

FIREYE(A Carrier Global Company,Combustion Safety Division)​

Product Type​

Dual-Spectrum(UV/Visible Light)Flame Detector​

Detection Spectrum​

UV:185-260nm;Visible Light:400-700nm​

Detection Range​

0.5-15m(distance to flame),120°horizontal field of view​

Response Time​

≤100ms(flame loss detection),≤500ms(flame presence detection)​

False Alarm Rejection​

Built-in algorithm to filter sunlight,incandescent bulbs,welding arcs,and hot surfaces​

Hazardous Area Certification​

ATEX Zone 1(II 2G Ex d IIC T6 Ga),IECEx Zone 1(Ex d IIC T6 Ga),CSA Class 1 Div 1​

Output Signals​

2 x SPDT relays(1 for flame presence,1 for fault alarm),4-20mA analog output(flame intensity)​

Power Supply​

24VDC±20%(12-30VDC),1.5W max power consumption​

Operating Temperature​

-40℃to+85℃​

Storage Temperature​

-40℃to+100℃​

Protection Rating​

IP66(housing),IP67(connector)​

Housing Material​

316L Stainless Steel(corrosion-resistant)​

Mounting Method​

Threaded Mount(1/2″NPT),Wall/Ceiling Mount with Bracket​

Communication Interface​

Modbus RTU(optional via FIREYE Gateway)​

EMC Compliance​

EN 61326-1(Industrial Environments),FCC Part 15 Class A​

Certification Standards​

NFPA 85,API 556,ISO 13849-1(SIL 2)​

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Typical Fault Troubleshooting Cases​

1.False Flame Loss Alarm​

Symptom:The FIREYE 85UVF1-1QD triggers a”Flame Loss”alarm(relay de-energizes,4-20mA output drops to 4mA)while the boiler burner is actually operating normally.​

Troubleshooting Steps:​

First,check the detector’s field of view:Inspect for obstructions(e.g.,soot buildup on the lens,oil stains,or loose insulation)that block UV/visible light transmission—use a soft lint-free cloth dipped in isopropyl alcohol to clean the lens.​

Verify ambient interference sources:If the detector is installed near welding operations or high-intensity LED lights,measure the visible light intensity(using a lux meter)at the detector lens—if it exceeds 10,000 lux(threshold for false alarms),reposition the detector to avoid direct light exposure.​

Check the flame stability:Use a FIREYE Flame Analyzer(model:FA-200)to measure flame intensity—if the intensity fluctuates below 20%of the detector’s minimum threshold(0.1 mW/cm²),adjust the burner’s air-fuel ratio to stabilize combustion.​

Solution:Clean the lens to restore light transmission,reposition the detector away from high-intensity light sources,and optimize the burner’s air-fuel ratio—after adjustment,the false alarm rate drops to 0,and the detector maintains stable flame detection.​

2.No Flame Detection(True Flame Present)​

Symptom:The burner ignites successfully,but the FIREYE 85UVF1-1QD fails to detect the flame(relay remains de-energized,4-20mA output stays at 4mA),triggering a fuel supply shutdown.​

Troubleshooting Steps:​

Test the detector’s power supply:Use a multimeter to measure the input voltage at the detector’s terminals—if it’s below 12VDC(minimum required voltage),check the power cable for voltage drops(common in long cable runs>50m)or loose connections at the terminal block.​

Inspect the UV sensor functionality:Use a FIREYE UV Test Lamp(model:TL-UV1)to simulate a flame signal—if the detector still doesn’t respond,the UV sensor may be faulty(lifespan:5-7 years,replace if expired).​

Verify the wiring of output relays:Check the continuity of the”Flame Presence”relay(SPDT)with a multimeter—if there’s no continuity when the test lamp is activated,the relay coil may be damaged(replace the detector’s relay module,model:RM-85).​

Solution:Replace the undersized power cable with 18AWG twisted-pair cable(for runs>50m)to reduce voltage drop,replace the expired UV sensor,and repair the faulty relay—after maintenance,the detector detects flame within 300ms of burner ignition.​

3.Fault Alarm LED Illuminates(Red LED Steady On)​

Symptom:The detector’s front-panel”Fault”LED(red)is steady on,and the fault relay energizes—indicating an internal or external issue.​

Troubleshooting Steps:​

Access the detector’s diagnostic menu(via FIREYE HMI or Modbus RTU):Check for fault codes—Code 03 indicates a UV sensor failure,Code 07 indicates a power supply fluctuation,and Code 12 indicates a communication error(if Modbus is enabled).​

Measure the power supply ripple:Use an oscilloscope to check for voltage ripple on the 24VDC supply—if the ripple exceeds 1V(peak-to-peak),install a power supply filter(model:PF-24)to stabilize the input voltage.​

Test the detector’s internal temperature:If the operating temperature exceeds+85℃(e.g.,near a boiler furnace),use a thermal imaging camera to measure the detector’s housing temperature—overheating can damage the internal circuit board.​

Solution:Replace the UV sensor for Code 03,install a power filter for voltage ripple,and reposition the detector to a cooler location(or add a heat shield)for overheating—after resolving the fault,the red LED turns off,and the detector resumes normal operation.​

Collaborative Configuration with Combustion System Components​

1.Power Plant Boiler Combustion Safety System​

Configuration Goal:Monitor 4 natural gas-fired boiler burners,ensuring flame detection,false alarm prevention,and emergency fuel shutdown in case of flame loss.​

Component Combination:​

4 units of FIREYE 85UVF1-1QD:Each detector is mounted 5m above the burner(120°field of view covers the flame completely),with 316L housing to resist boiler room corrosion.​

1 unit of FIREYE Flame Interface Module(FIM-4):Collects signals from 4 detectors(relay outputs+4-20mA analog)and transmits data to the boiler DCS(Siemens PCS 7)via Modbus RTU.​

4 units of FIREYE Fuel Shutoff Valves(FSV-24):Triggered by the detector’s fault relay—close within 200ms of flame loss to stop natural gas supply.​

1 unit of FIREYE Test Panel(TP-85):Allows manual testing of each detector(via UV test lamp)during scheduled maintenance,without shutting down the boiler.​

Configuration Advantages:The dual-spectrum detection reduces false alarms from boiler room lighting by 90%compared to single-UV detectors;the FIM-4 module centralizes diagnostics,simplifying fault identification for maintenance teams.​

2.Petrochemical Refinery Heater System​

Configuration Goal:Monitor 2 crude oil heater burners(operating in ATEX Zone 1),with redundant flame detection to meet SIL 2 safety requirements.​

Component Combination:​

4 units of FIREYE 85UVF1-1QD(2 per burner,redundant configuration):Mounted on opposite sides of the heater(8m distance to flame)to ensure no blind spots—each detector has independent power supplies and output relays.​

1 unit of FIREYE Redundancy Module(RM-2):Compares signals from the 2 detectors per burner—triggers an alarm only if both detectors report flame loss(prevents single-detector failure from causing unnecessary shutdowns).​

1 unit of FIREYE HMI(HM-10):Displays real-time flame intensity(via 4-20mA output),detector status,and fault codes—allows operators to adjust detection sensitivity(0-100%)remotely.​

2 units of FIREYE Explosion-Proof Enclosures(EE-85):Houses the detectors in ATEX Zone 1 areas—enclosure rating:Ex d IIC T6 Ga,compatible with the detector’s housing.​

Configuration Advantages:Redundant detection meets SIL 2 compliance(IEC 61508),reducing the risk of unplanned heater shutdowns by 80%;the HMI’s remote sensitivity adjustment eliminates the need for on-site visits to hazardous areas.​

Compatibility with Third-Party Systems​

1.Compatibility with DCS/PLC Controllers​

The FIREYE 85UVF1-1QD integrates seamlessly with mainstream industrial control systems,with common configurations including:​

Siemens PCS 7 DCS:Connect the detector’s 4-20mA analog output to a Siemens AI module(e.g.,SM 331)to monitor flame intensity;wire the”Flame Presence”relay to a Siemens DI module(e.g.,SM 321)for status feedback.Enable Modbus RTU via the detector’s dip switches(Baud rate:9600,Parity:None)to transmit diagnostic data to the DCS’s Modbus master.​

Allen-Bradley ControlLogix PLC:Use a FIREYE Modbus Gateway(GW-10)to convert the detector’s RS-485 signal to Ethernet/IP—map the”Flame Loss”alarm to a PLC tag(e.g.,BOOL_FlameLoss)and configure a ladder logic routine to trigger a fuel valve shutdown if the tag is active for>1s.​

Note:Ensure the detector’s ground is connected to the DCS/PLC cabinet ground(resistance≤1Ω)to avoid ground loop interference with the 4-20mA signal.​

2.Compatibility with Burner Management Systems(BMS)​

When integrated with third-party BMS(e.g.,Honeywell Safety Manager,Rockwell PlantPAx BMS):​

The detector’s”Fault”relay is wired to the BMS’s emergency shutdown input—if a detector fault is detected,the BMS alerts operators and switches to a redundant detector(if available).​

The 4-20mA analog output is used to trend flame intensity over time—if intensity decreases by>30%in 5 minutes(indicating burner fouling),the BMS generates a maintenance alert(per API 556 guidelines).​

Configure the detector’s”Flame On Delay”(0-10s)to match the BMS’s burner ignition sequence—prevents false alarms during the ignition delay period.​

Long-Term Operation Optimization Measures​

1.Environmental Adaptation Optimization​

High-Temperature Environments(e.g.,Boiler Furnace,80-85℃):Install a FIREYE Heat Shield(HS-85)around the detector—reduces housing temperature by 15-20℃.Apply a heat-resistant coating(model:HC-100)to the lens to prevent soot adhesion at high temperatures.​

Corrosive Environments(e.g.,Offshore Platforms,Salt Mist):Replace the standard O-ring with a Viton O-ring(model:OR-85-V)to resist saltwater corrosion;clean the detector’s housing monthly with a 5%sodium bicarbonate solution to remove salt deposits.​

Dusty Environments(e.g.,Coal-Fired Power Plants):Install a FIREYE Air Purge Kit(AP-85)to blow filtered compressed air(0.2-0.5 bar)across the lens—prevents dust buildup that blocks light transmission.​

2.Performance Degradation Prevention​

Regular Calibration Plan:Use a FIREYE Calibration Kit(CK-85)every 6 months to verify detection accuracy—place the kit’s calibrated UV/visible light source 1m from the detector,adjust the detector’s sensitivity potentiometer(R12)until the 4-20mA output reads 12mA(50%intensity).Record calibration data in a log to track long-term performance.​

UV Sensor Replacement:Replace the UV sensor(model:S-UV85)every 5 years(or earlier if diagnostic codes indicate failure)—the sensor’s sensitivity degrades over time,increasing the risk of missed flame detection.​

Firmware Update:Download the latest firmware(version:V3.1.0)from FIREYE’s official website—update via the detector’s USB port(requires FIREYE Software Tool,ST-85).The new firmware improves false alarm rejection for LED lighting and optimizes low-temperature performance(-40℃).​

Spare Parts Management Recommendations​

1.Spare Quantity Calculation​

Based on the”10:1 Spare Ratio”for safety-critical detectors:​

For a plant with 20 FIREYE 85UVF1-1QD detectors(used in refinery heaters,shutdown risk if faulty),prepare 2-3 spare detectors(stored in a temperature-controlled warehouse:10-30℃,humidity:30%-60%).​

For non-critical applications(e.g.,food processing boilers),a 20:1 ratio is acceptable(1 spare for 20 detectors).​

Stock critical spare parts:5-10 UV sensors(S-UV85),3-5 relay modules(RM-85),and 2-3 power filters(PF-24)to minimize downtime for common faults.​

2.Spare Storage Requirements​

Packaging:Store spare detectors in original packaging(with desiccant packs)to prevent moisture damage;wrap UV sensors in aluminum foil to protect from UV light exposure(prolongs shelf life by 2 years).​

Periodic Inspection:Test spare detectors every 12 months using a FIREYE Test Station(TS-85)—verify flame detection response time,relay operation,and 4-20mA output accuracy.Discard any detectors that fail the test(e.g.,response time>500ms).​

Inventory Tracking:Use FIREYE’s Spare Parts Management Software(SPMS-10)to track spare part expiration​

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