Azbil AUD300C1000 Series User Manual

Also see for AUD300C1000 Series: User manaul User manual

Contents

Azbil AUD300C1000 Series User Manual Manual pdf 14 page image

6Chapter 2. MOUNTINGThe allowable range of the mounting posture is that the upper limit is 90° (conduittube port becomes horizontal) and the lower limit is 45°.VerticalplaneUpper limit 90°Lower limit 45°HorizontalplaneSide90°45°Handling Precautions• Mount this device so that it monitors the burner at an angle from above. If itmonitors the burner at an angle from below or from the same level, dust, soot,etc., will accumulate on the monitoring window or in the monitoring pipe. Thismay block the ultraviolet rays, preventing flame detection.■ Mounting of the monitoring pipe● Monitoring pipe materialsUse a mounting pipe with a black inside wall. If the inside wall of the pipe has astainless steel or electroplated surface, ultraviolet rays will be reflected irregularlyinside the pipe, causing a malfunction.● Monitoring pipe sizeTo detect a large amount of ultraviolet radiation from the flame, this device’s light-receiving surface must have a wide field of view. If the recommended flame voltageof 2.0 V DC cannot be ensured, change the monitoring pipe to a wider one so thatsufficient ultraviolet radiation is received.• Use as large a monitoring pipe as possible. Connect the pipe to the device using areducer.• Make the length of the monitoring pipe as short as possible. However, alwayskeep the operating ambient temperature within 100 °C (up to 120 °C duringflame detection).