Siemens QRA7 UV Flame Sensor
Description
| Type refer- ence | Sensitivity | Detector tube length | Mains voltage | Spare UV tube |
| QRA73.A27 | normal | 125 mm | AC 230 V +10 / -15 % |
AGR4 502 4065 0 |
| QRA73.A17 | AC 120 V +10 / -15 % | |||
| QRA75.A27 | normal | 69 mm | AC 230 V +10 / -15 % | |
| QRA75.A17 | AC 120 V +10 / -15 % |
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