SIEMENS QRA73A27 uv sensor mesin burner – Flame Detector / Photocell / Sensor Api / Flame Sensor

SIEMENS QRA73A27 uv sensor mesin burner The UV flame detectors are designed for use with Siemens burner controls, for the supervision of gas or oil flames. The QRA… and this Data Sheet are intended for use by OEMs which integrate the flame detectors in their products. To avoid injury to persons, damage to property or the environment, the following warning notes must be observed! ? All activities (mounting, installation and service work, etc.) must be performed by qualified staff ? Before carrying out any work on the flame detector, isolate the power supply completely (all-polar disconnection). Check the power supply with a suitable voltage test and secure the power supply against being switched on again unintentionally. If not observed, there is a risk of electric shock hazard. ? Ensure protection against electric shock hazard by providing adequate protection for the terminals. If this is not observed, there is a risk of electric shock ? Each time work has been carried out (mounting, installation, service work, etc.), check to ensure that wiring is in an orderly state. If this is not observed, there is a risk of electric shock ? Halogen lamps, welding equipment, special lamps or ignition sparks may produce sufficient radiation for the detector’s UV cell to ignite. X-rays and gamma radiation can also generate erroneous flame signals. If this is not observed, there is a risk of loss of safety functions ? Fall or shock can adversely affect the safety functions. Such units must not be put into operation, even if they do not exhibit any damage. If this is not observed, there is a risk of loss of safety functions and a risk of electric shock

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