1 PCS used Siemens Flame Detector QRA75.A27 #LYQ007
1 PCS used Siemens Flame Detector QRA75.A27 #LYQ007
1 PCS used Siemens Flame Detector QRA75.A27 #LYQ007
1. General Information (Original Siemens Factory Standard)
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Parameter
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Specification
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Unit
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Notes
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Brand
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Siemens
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Genuine, Original Siemens Factory Production, 100% Authentic, Industrial-Grade Flame Detector
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Product Model
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QRA75.A27
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Original Siemens Model, Factory Calibrated, No Modification, Dedicated for Industrial Flame Detection
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Product Name
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Flame Detector
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A high-reliability flame detection device, designed for industrial combustion systems, with stable performance
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Product Type
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Industrial-Grade UV Flame Detector
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Utilizes ultraviolet (UV) detection technology, strong anti-interference, suitable for harsh industrial combustion scenarios
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Detection Technology
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Ultraviolet (UV) Detection, Solid-State UV Sensor
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-
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High sensitivity to UV radiation from flames, effectively distinguishing flame signals from background interference sources
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Detection Wavelength
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185 ~ 260 nm (UV-C Range); Optimized for Flame UV Radiation
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nm
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Optimized UV-C wavelength range, specifically targeting flame radiation, minimizing false alarm rate and improving detection accuracy
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Response Time
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≤ 200 ms (Fire Detection); ≤ 3000 ms (Flame Extinction)
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ms
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Rapid response to flame signals, ensuring timely alarm and combustion control to prevent safety accidents
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Detection Angle
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120° (Horizontal); 90° (Vertical)
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°
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Wide detection range, suitable for large-area flame monitoring in industrial boilers, furnaces, incinerators and pipelines
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Power Supply Voltage
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24 VDC (18 ~ 30 VDC); Optional: 110/230 VAC (50/60 Hz)
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VDC, VAC
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Stable power supply adaptation, compatible with standard industrial power systems, low power fluctuation tolerance
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Power Consumption
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≤ 3.5 W (Rated Working Condition)
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W
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Low power consumption, energy-saving, reducing long-term operation costs of industrial safety systems
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Output Signal
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1 Group Changeover Contact, PNP/NPN Switching Output (Optional)
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-
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Flexible output mode, compatible with various industrial PLC systems, alarm devices and shut-off valves
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Relay Output
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SPDT Relay (1 Channel), 2 A @ 250 VAC
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A, VAC
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Built-in relay, directly driving external alarm and control devices without additional amplifiers
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Alarm Threshold
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Adjustable, Adaptive Flame Signal Recognition
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-
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Adaptive threshold setting, eliminating the need for remote amplifiers or flame switches, easy to debug on site
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Operating Temperature Range
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Detector: -40 ~ +85 °C; Sensor: -40 ~ +100 °C
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°C
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Wide temperature adaptation, stable performance under extreme high and low temperature conditions in industrial sites
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Storage Temperature Range
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-40 ~ +90 °C
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°C
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Suitable for long-term storage in harsh environments, no performance degradation during transportation and storage
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Relative Humidity
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0 ~ 95% (Non-Condensing)
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%
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Strong humidity resistance, suitable for high-humidity industrial environments such as chemical plants and boiler rooms
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Protection Level
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IP67
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-
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Dust-tight and waterproof, protecting internal components from damage, suitable for outdoor and harsh indoor installations
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Dimensions (W×H×D)
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Detector: 150 × 75 × 160 mm; Sensor: Φ38 × 110 mm
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mm
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Compact design, saving installation space, easy to integrate into various industrial control cabinets and on-site equipment
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Weight
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Approx. 0.5 kg (Total, Detector + Sensor)
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kg
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Lightweight, easy to transport and install, reducing load on mounting positions
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Mounting Type
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Wall Mount (Standard); Flange Mount (Optional)
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-
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Dual mounting options, compatible with standard industrial mounting standards, suitable for different installation scenarios
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Status Indication
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LED Indication (Green: Power On; Red: Flame Detected/Alarm; Yellow: Fault)
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-
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Clear status display, easy to monitor device operation and troubleshoot on site
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Fault Self-Diagnosis
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Yes (Sensor Fault, Power Fault, Signal Abnormality, Lens Contamination)
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-
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Automatic fault detection, timely feedback of abnormalities, reducing maintenance time and costs
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Certifications
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ATEX, IECEx, UL, CSA, CE Certified
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-
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Complies with international industrial safety standards, applicable to explosive and non-explosive industrial environments
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Service Life
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≥ 10,000 Hours (Continuous Operation)
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Hours
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Long service life, stable performance, reducing maintenance frequency and replacement costs
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Cable Length
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5 m (Standard), Extendable to 100 m (with Signal Amplifier)
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m
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Standard cable length meets most installation needs, extendable for long-distance installation scenarios
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Detection Distance
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0.3 ~ 10 m (Adjustable, Depending on Flame Intensity)
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m
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Adjustable detection distance, suitable for most industrial flame monitoring scenarios, flexible and practical
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