Siemens QRA4M.U is a high-sensitivity, front-viewing UV flame detector with an aluminium housing, ¾-inch NPSM mounting thread and approximately 1.8 m connecting leads.
Product Specification
- Frontal flame viewing through an aluminium detector housing; ½-inch–14 NPSM connection for protective metal conduit.
- Maximum permissible combustion-chamber pressure: 150 mbar.
- The AGG04 coupling adapts the NPSM connection to a G1-inch pipe thread. AGG02 heat-insulating glass and AGG15 thermal insulation are separate accessories.
- The UV cell is bonded into the housing. Replacement is by complete detector, rather than a removable cell.
- Average UV-cell life: approximately 10,000 hours at a maximum ambient temperature of +50 °C.
- Operating ambient temperature: −20 to +60 °C.
Control Compatibility
LFS1; LMV26.300Ax with AGM60.1; LMV27.100Ax; LMV36.520Ax with AGM60.4; LMV37.4.
Related Model
Siemens QRA4.U is the normal-sensitivity version.
