SATRONIC UVZ 780 / uv sensor HONEYWELL red, blue, white – Photocell / Sensor Api / Flame Sensor

SATRONIC UVZ 780 / UV SENSOR HONEYWELL RED , BLUE , WHITE UV cells UV cells contain a vacuum tube as the flame sensor. Types UVZ 780 (for intermittend operation) and UVZE 780 (for continous operation). The UVZ 780 is used together with either a MMG 8xx, TMG 740-3 or SGU 930(i) control box to detect flames of gas or dual fuel burners. It contains mainly the UV tube itself (make: Sylvania) and is available in 3 different sensitivities: UVZE 780 As this mentioned UV test feature is performed only once during the start of a burner, it is not suitable for burners in continous operation mode. A more sophisticated test is performed there. UVZE 780 standard sensitivity TME 780 The UVZE 780 is available in standard sensitivity only! The UVZE 780 consists of a quite bulky housing, which contains the UV tube itself plus a shutter mechanism. During operation, every four minutes, the TME 780 sends out a «check-signal», which activates the shutter. The shutter covers the viewing areas of the UVZE 780 (end-on and side-on) for approx. one sec. The TME 780 checks during this time if the flame signal disapears; if not, it would mean the UV tube is in self-igniting state due to ageing. Of course, the flame relay inside the TME 780 amplifier is bridged for this period, otherwise the TME 780 would go to a safety shutdown. Due to this additional feature, both the UVZE and the TME 780 are remarkable more sophisticated and therefore more expensive than the normal UVZ and TMG combination.

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