Description
SIEMENS Flame Detector QRA75.A27 for Fire Safety Monitoring
High-reliability UV/IR flame detection for critical fire safety monitoring in industrial environments, with fast response and robust false-alarm immunity.
| Brand | SIEMENS |
| Model | QRA75.A27 |
| Voltage | 24V DC |
| Country of Origin | Germany |
| Weight | 0.25 kg |
| Dimensions | 85 mm x 45 mm x 45 mm |
| Warranty | 2 years |
| Certifications | EN 54-10, UL 521, FM 3230, VdS G 209 078 |
| SKU / MPN | QRA75.A27 |
| What’s in the box | Flame detector unit, mounting bracket, installation manual, quick start guide |
| Spectral Range | UV/IR dual-spectrum (190-270 nm UV, 4.3 m IR) |
| Detection Range | Up to 50 m for 0.1 m heptane fire |
| Response Time | < 5 seconds (typical) |
| Operating Temperature | -40°C to +85°C |
| Ingress Protection | IP67 |
| Output Signal | Relay (NO/NC), 4-20 mA, RS-485 Modbus |
Key benefits: Dual-spectrum sensing reduces false alarms; wide temperature range; IP67 rated for harsh conditions; multiple output options for integration.
Typical applications: Oil and gas refineries, chemical plants, power generation facilities, aircraft hangars, fuel storage areas
Order number: SIEMENS Flame Detector QRA75.A27 for Fire Safety Monitoring
Lifecycle: Active
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Thomas K. –
Good technical parameters, exactly as datasheet. Easy to commission.